Merge tag 'acpi-5.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull ACPI updates from Rafael Wysocki: "These are usual ACPICA code updates (although there are more of them than in the last few releases), a noticeable EC driver update (which mostly consists of cleanups, though), the device enumeration quirks handling rework from Hans, some updates eliminating unnecessary CPU cache flushing in some places (processor idle and system-wide PM code) and a bunch of assorted cleanups and fixes. Specifics: - Update ACPICA code in the kernel to the 20211217 upstream release including the following changes: - iASL/Disassembler: Additional support for NHLT table (Bob Moore). - Change a return_ACPI_STATUS (AE_BAD_PARAMETER) (Bob Moore). - Fix a couple of warnings under MSVC (Bob Moore). - iASL: Add TDEL table to both compiler/disassembler (Bob Moore). - iASL/NHLT table: "Specific Data" field support (Bob Moore). - Use original data_table_region pointer for accesses (Jessica Clarke). - Use original pointer for virtual origin tables (Jessica Clarke). - Macros: Remove ACPI_PHYSADDR_TO_PTR (Jessica Clarke). - Avoid subobject buffer overflow when validating RSDP signature (Jessica Clarke). - iASL: Add suppport for AGDI table (Ilkka Koskinen). - Hardware: Do not flush CPU cache when entering S4 and S5 (Kirill A. Shutemov). - Expand the ACPI_ACCESS_ definitions (Mark Langsdorf). - Utilities: Avoid deleting the same object twice in a row (Rafael Wysocki). - Executer: Fix REFCLASS_REFOF case in acpi_ex_opcode_1A_0T_1R() (Rafael Wysocki). - Fix AEST Processor generic resource substructure data field byte length (Shuuichirou Ishii). - Fix wrong interpretation of PCC address (Sudeep Holla). - Add support for PCC Opregion special context data (Sudeep Holla). - Implement OperationRegion handler for PCC Type 3 subtype (Sudeep Holla). - Introduce acpi_fetch_acpi_dev() as a replacement for acpi_bus_get_device() and use it in the ACPI subsystem (Rafael Wysocki). - Avoid using _CID for device enumaration if _HID is missing or invalid (Rafael Wysocki). - Rework quirk handling during ACPI device enumeration and add some new quirks for known broken platforms (Hans de Goede). - Avoid unnecessary or redundant CPU cache flushing during system PM transitions (Kirill A. Shutemov). - Add PM debug messages related to power resources (Rafael Wysocki). - Fix kernel-doc comment in the PCI host bridge ACPI driver (Yang Li). - Rework flushing of EC work while suspended to idle and clean up the handling of events in the ACPI EC driver (Rafael Wysocki). - Prohibit ec_sys module parameter write_support from being used when the system is locked down (Hans de Goede). - Make the ACPI processor thermal driver use cpufreq_cpu_get() to check for presence of cpufreq policy (Manfred Spraul). - Avoid unnecessary CPU cache flushing in the ACPI processor idle driver (Kirill A. Shutemov). - Replace kernel.h with the necessary inclusions in the ACPI processor driver (Andy Shevchenko). - Use swap() instead of open coding it in the ACPI processor idle driver (Guo Zhengkui). - Fix the handling of defective LPAT in the ACPI xpower PMIC driver and clean up some definitions of PMIC data structures (Hans de Goede). - Fix outdated comment in the ACPI DPTF driver (Sumeet Pawnikar). - Add AEST to the list of known ACPI table signatures (Shuuichirou Ishii). - Make ACPI NUMA code take hotpluggable memblocks into account when CONFIG_MEMORY_HOTPLUG is not set (Vitaly Kuznetsov). - Use default_groups in kobj_type in the ACPI sysfs code (Greg Kroah-Hartman). - Rearrange _CPC structure documentation (Andy Shevchenko). - Drop an always true check from the ACPI thermal driver (Adam Borowski). - Add new "not charging" quirk for Lenovo ThinkPads to the ACPI battery driver (Thomas Weißschuh)" * tag 'acpi-5.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (64 commits) ACPI: PCC: Implement OperationRegion handler for the PCC Type 3 subtype ACPI / x86: Skip AC and battery devices on x86 Android tablets with broken DSDTs ACPI / x86: Introduce an acpi_quirk_skip_acpi_ac_and_battery() helper ACPI: processor: thermal: avoid cpufreq_get_policy() serdev: Do not instantiate serdevs on boards with known bogus DSDT entries i2c: acpi: Do not instantiate I2C-clients on boards with known bogus DSDT entries ACPI / x86: Add acpi_quirk_skip_[i2c_client|serdev]_enumeration() helpers ACPI: scan: Create platform device for BCM4752 and LNV4752 ACPI nodes PCI/ACPI: Fix acpi_pci_osc_control_set() kernel-doc comment ACPI: battery: Add the ThinkPad "Not Charging" quirk ACPI: sysfs: use default_groups in kobj_type ACPICA: Update version to 20211217 ACPICA: iASL/NHLT table: "Specific Data" field support ACPICA: iASL: Add suppport for AGDI table ACPICA: iASL: Add TDEL table to both compiler/disassembler ACPICA: Fixed a couple of warnings under MSVC ACPICA: Change a return_ACPI_STATUS (AE_BAD_PARAMETER) ACPICA: Hardware: Do not flush CPU cache when entering S4 and S5 ACPICA: Add support for PCC Opregion special context data ACPICA: Fix wrong interpretation of PCC address ...
author: Linus Torvalds <torvalds@linux-foundation.org> 2022-01-10 20:26:56 -0800
committer: Linus Torvalds <torvalds@linux-foundation.org> 2022-01-10 20:26:56 -0800
commit: bca21755b9fc00dbe371994b53389eb5d70b8e72 (patch)
tree: 400369d681f31251007b48d43e4682c68d08769f /drivers
parent: 63045bfd3c8dbe9c8bee7e33291202725154cb2c (diff)
parent: 70df8e1bdc941431af2370270f5140291dcbb282 (diff)
65 files changed, 1064 insertions, 548 deletions
diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig
index cdbdf68bd98f..60b5424bd318 100644
--- a/drivers/acpi/Kconfig
+++ b/drivers/acpi/Kconfig
@@ -524,6 +524,23 @@ config ACPI_PPTT
 	bool
 endif
 
+config ACPI_PCC
+	bool "ACPI PCC Address Space"
+	depends on PCC
+	default y
+	help
+	  The PCC Address Space also referred as PCC Operation Region pertains
+	  to the region of PCC subspace that succeeds the PCC signature.
+
+	  The PCC Operation Region works in conjunction with the PCC Table
+	  (Platform Communications Channel Table). PCC subspaces that are
+	  marked for use as PCC Operation Regions must not be used as PCC
+	  subspaces for the standard ACPI features such as CPPC, RASF, PDTT and
+	  MPST. These standard features must always use the PCC Table instead.
+
+	  Enable this feature if you want to set up and install the PCC Address
+	  Space handler to handle PCC OpRegion in the firmware.
+
 source "drivers/acpi/pmic/Kconfig"
 
 config ACPI_VIOT
diff --git a/drivers/acpi/Makefile b/drivers/acpi/Makefile
index 3018714e87d9..08c2d985c57c 100644
--- a/drivers/acpi/Makefile
+++ b/drivers/acpi/Makefile
@@ -67,6 +67,7 @@ acpi-$(CONFIG_ACPI_LPIT)	+= acpi_lpit.o
 acpi-$(CONFIG_ACPI_GENERIC_GSI) += irq.o
 acpi-$(CONFIG_ACPI_WATCHDOG)	+= acpi_watchdog.o
 acpi-$(CONFIG_ACPI_PRMT)	+= prmt.o
+acpi-$(CONFIG_ACPI_PCC)		+= acpi_pcc.o
 
 # Address translation
 acpi-$(CONFIG_ACPI_ADXL)	+= acpi_adxl.o
diff --git a/drivers/acpi/ac.c b/drivers/acpi/ac.c
index 81aff651a0d4..db487ff9dd1b 100644
--- a/drivers/acpi/ac.c
+++ b/drivers/acpi/ac.c
@@ -48,19 +48,12 @@ static const struct acpi_device_id ac_device_ids[] = {
 };
 MODULE_DEVICE_TABLE(acpi, ac_device_ids);
 
-/* Lists of PMIC ACPI HIDs with an (often better) native charger driver */
-static const struct acpi_ac_bl acpi_ac_blacklist[] = {
-	{ "INT33F4", -1 }, /* X-Powers AXP288 PMIC */
-	{ "INT34D3",  3 }, /* Intel Cherrytrail Whiskey Cove PMIC */
-};
-
 #ifdef CONFIG_PM_SLEEP
 static int acpi_ac_resume(struct device *dev);
 #endif
 static SIMPLE_DEV_PM_OPS(acpi_ac_pm, NULL, acpi_ac_resume);
 
 static int ac_sleep_before_get_state_ms;
-static int ac_check_pmic = 1;
 static int ac_only;
 
 static struct acpi_driver acpi_ac_driver = {
@@ -200,12 +193,6 @@ static int __init thinkpad_e530_quirk(const struct dmi_system_id *d)
 	return 0;
 }
 
-static int __init ac_do_not_check_pmic_quirk(const struct dmi_system_id *d)
-{
-	ac_check_pmic = 0;
-	return 0;
-}
-
 static int __init ac_only_quirk(const struct dmi_system_id *d)
 {
 	ac_only = 1;
@@ -215,13 +202,6 @@ static int __init ac_only_quirk(const struct dmi_system_id *d)
 /* Please keep this list alphabetically sorted */
 static const struct dmi_system_id ac_dmi_table[]  __initconst = {
 	{
-		/* ECS EF20EA, AXP288 PMIC but uses separate fuel-gauge */
-		.callback = ac_do_not_check_pmic_quirk,
-		.matches = {
-			DMI_MATCH(DMI_PRODUCT_NAME, "EF20EA"),
-		},
-	},
-	{
 		/* Kodlix GK45 returning incorrect state */
 		.callback = ac_only_quirk,
 		.matches = {
@@ -229,15 +209,6 @@ static const struct dmi_system_id ac_dmi_table[]  __initconst = {
 		},
 	},
 	{
-		/* Lenovo Ideapad Miix 320, AXP288 PMIC, separate fuel-gauge */
-		.callback = ac_do_not_check_pmic_quirk,
-		.matches = {
-			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
-			DMI_MATCH(DMI_PRODUCT_NAME, "80XF"),
-			DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo MIIX 320-10ICR"),
-		},
-	},
-	{
 		/* Lenovo Thinkpad e530, see comment in acpi_ac_notify() */
 		.callback = thinkpad_e530_quirk,
 		.matches = {
@@ -341,23 +312,15 @@ static int acpi_ac_remove(struct acpi_device *device)
 
 static int __init acpi_ac_init(void)
 {
-	unsigned int i;
 	int result;
 
 	if (acpi_disabled)
 		return -ENODEV;
 
-	dmi_check_system(ac_dmi_table);
+	if (acpi_quirk_skip_acpi_ac_and_battery())
+		return -ENODEV;
 
-	if (ac_check_pmic) {
-		for (i = 0; i < ARRAY_SIZE(acpi_ac_blacklist); i++)
-			if (acpi_dev_present(acpi_ac_blacklist[i].hid, "1",
-					     acpi_ac_blacklist[i].hrv)) {
-				pr_info("found native %s PMIC, not loading\n",
-					acpi_ac_blacklist[i].hid);
-				return -ENODEV;
-			}
-	}
+	dmi_check_system(ac_dmi_table);
 
 	result = acpi_bus_register_driver(&acpi_ac_driver);
 	if (result < 0)
diff --git a/drivers/acpi/acpi_pcc.c b/drivers/acpi/acpi_pcc.c
new file mode 100644
index 000000000000..41e3ebd204ff
--- /dev/null
+++ b/drivers/acpi/acpi_pcc.c
@@ -0,0 +1,120 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Author: Sudeep Holla <sudeep.holla@arm.com>
+ * Copyright 2021 Arm Limited
+ *
+ * The PCC Address Space also referred as PCC Operation Region pertains to the
+ * region of PCC subspace that succeeds the PCC signature. The PCC Operation
+ * Region works in conjunction with the PCC Table(Platform Communications
+ * Channel Table). PCC subspaces that are marked for use as PCC Operation
+ * Regions must not be used as PCC subspaces for the standard ACPI features
+ * such as CPPC, RASF, PDTT and MPST. These standard features must always use
+ * the PCC Table instead.
+ *
+ * This driver sets up the PCC Address Space and installs an handler to enable
+ * handling of PCC OpRegion in the firmware.
+ *
+ */
+#include <linux/kernel.h>
+#include <linux/acpi.h>
+#include <linux/completion.h>
+#include <linux/idr.h>
+#include <linux/io.h>
+
+#include <acpi/pcc.h>
+
+struct pcc_data {
+	struct pcc_mbox_chan *pcc_chan;
+	void __iomem *pcc_comm_addr;
+	struct completion done;
+	struct mbox_client cl;
+	struct acpi_pcc_info ctx;
+};
+
+struct acpi_pcc_info pcc_ctx;
+
+static void pcc_rx_callback(struct mbox_client *cl, void *m)
+{
+	struct pcc_data *data = container_of(cl, struct pcc_data, cl);
+
+	complete(&data->done);
+}
+
+static acpi_status
+acpi_pcc_address_space_setup(acpi_handle region_handle, u32 function,
+			     void *handler_context,  void **region_context)
+{
+	struct pcc_data *data;
+	struct acpi_pcc_info *ctx = handler_context;
+	struct pcc_mbox_chan *pcc_chan;
+
+	data = kzalloc(sizeof(*data), GFP_KERNEL);
+	if (!data)
+		return AE_NO_MEMORY;
+
+	data->cl.rx_callback = pcc_rx_callback;
+	data->cl.knows_txdone = true;
+	data->ctx.length = ctx->length;
+	data->ctx.subspace_id = ctx->subspace_id;
+	data->ctx.internal_buffer = ctx->internal_buffer;
+
+	init_completion(&data->done);
+	data->pcc_chan = pcc_mbox_request_channel(&data->cl, ctx->subspace_id);
+	if (IS_ERR(data->pcc_chan)) {
+		pr_err("Failed to find PCC channel for subspace %d\n",
+		       ctx->subspace_id);
+		return AE_NOT_FOUND;
+	}
+
+	pcc_chan = data->pcc_chan;
+	data->pcc_comm_addr = acpi_os_ioremap(pcc_chan->shmem_base_addr,
+					      pcc_chan->shmem_size);
+	if (!data->pcc_comm_addr) {
+		pr_err("Failed to ioremap PCC comm region mem for %d\n",
+		       ctx->subspace_id);
+		return AE_NO_MEMORY;
+	}
+
+	*region_context = data;
+	return AE_OK;
+}
+
+static acpi_status
+acpi_pcc_address_space_handler(u32 function, acpi_physical_address addr,
+			       u32 bits, acpi_integer *value,
+			       void *handler_context, void *region_context)
+{
+	int ret;
+	struct pcc_data *data = region_context;
+
+	reinit_completion(&data->done);
+
+	/* Write to Shared Memory */
+	memcpy_toio(data->pcc_comm_addr, (void *)value, data->ctx.length);
+
+	ret = mbox_send_message(data->pcc_chan->mchan, NULL);
+	if (ret < 0)
+		return AE_ERROR;
+
+	if (data->pcc_chan->mchan->mbox->txdone_irq)
+		wait_for_completion(&data->done);
+
+	mbox_client_txdone(data->pcc_chan->mchan, ret);
+
+	memcpy_fromio(value, data->pcc_comm_addr, data->ctx.length);
+
+	return AE_OK;
+}
+
+void __init acpi_init_pcc(void)
+{
+	acpi_status status;
+
+	status = acpi_install_address_space_handler(ACPI_ROOT_OBJECT,
+						    ACPI_ADR_SPACE_PLATFORM_COMM,
+						    &acpi_pcc_address_space_handler,
+						    &acpi_pcc_address_space_setup,
+						    &pcc_ctx);
+	if (ACPI_FAILURE(status))
+		pr_alert("OperationRegion handler could not be installed\n");
+}
diff --git a/drivers/acpi/acpi_video.c b/drivers/acpi/acpi_video.c
index 42ede059728c..990ff5b0aeb8 100644
--- a/drivers/acpi/acpi_video.c
+++ b/drivers/acpi/acpi_video.c
@@ -1733,13 +1733,12 @@ acpi_video_bus_match(acpi_handle handle, u32 level, void *context,
 {
 	struct acpi_device *device = context;
 	struct acpi_device *sibling;
-	int result;
 
 	if (handle == device->handle)
 		return AE_CTRL_TERMINATE;
 
-	result = acpi_bus_get_device(handle, &sibling);
-	if (result)
+	sibling = acpi_fetch_acpi_dev(handle);
+	if (!sibling)
 		return AE_OK;
 
 	if (!strcmp(acpi_device_name(sibling), ACPI_VIDEO_BUS_NAME))
diff --git a/drivers/acpi/acpica/acevents.h b/drivers/acpi/acpica/acevents.h
index 82a75964343b..b29ba436944a 100644
--- a/drivers/acpi/acpica/acevents.h
+++ b/drivers/acpi/acpica/acevents.h
@@ -224,6 +224,11 @@ acpi_ev_pci_bar_region_setup(acpi_handle handle,
 			     void *handler_context, void **region_context);
 
 acpi_status
+acpi_ev_data_table_region_setup(acpi_handle handle,
+				u32 function,
+				void *handler_context, void **region_context);
+
+acpi_status
 acpi_ev_default_region_setup(acpi_handle handle,
 			     u32 function,
 			     void *handler_context, void **region_context);
diff --git a/drivers/acpi/acpica/acobject.h b/drivers/acpi/acpica/acobject.h
index 9db5ae0f79ea..0aa0d847cb25 100644
--- a/drivers/acpi/acpica/acobject.h
+++ b/drivers/acpi/acpica/acobject.h
@@ -138,6 +138,7 @@ struct acpi_object_region {
 	union acpi_operand_object *next;
 	acpi_physical_address address;
 	u32 length;
+	void *pointer;		/* Only for data table regions */
 };
 
 struct acpi_object_method {
diff --git a/drivers/acpi/acpica/actables.h b/drivers/acpi/acpica/actables.h
index e2d0046799a2..533802fe73e9 100644
--- a/drivers/acpi/acpica/actables.h
+++ b/drivers/acpi/acpica/actables.h
@@ -35,7 +35,8 @@ acpi_tb_init_table_descriptor(struct acpi_table_desc *table_desc,
 
 acpi_status
 acpi_tb_acquire_temp_table(struct acpi_table_desc *table_desc,
-			   acpi_physical_address address, u8 flags);
+			   acpi_physical_address address,
+			   u8 flags, struct acpi_table_header *table);
 
 void acpi_tb_release_temp_table(struct acpi_table_desc *table_desc);
 
@@ -86,6 +87,7 @@ acpi_tb_release_table(struct acpi_table_header *table,
 acpi_status
 acpi_tb_install_standard_table(acpi_physical_address address,
 			       u8 flags,
+			       struct acpi_table_header *table,
 			       u8 reload, u8 override, u32 *table_index);
 
 void acpi_tb_uninstall_table(struct acpi_table_desc *table_desc);
@@ -95,7 +97,9 @@ acpi_tb_load_table(u32 table_index, struct acpi_namespace_node *parent_node);
 
 acpi_status
 acpi_tb_install_and_load_table(acpi_physical_address address,
-			       u8 flags, u8 override, u32 *table_index);
+			       u8 flags,
+			       struct acpi_table_header *table,
+			       u8 override, u32 *table_index);
 
 acpi_status acpi_tb_unload_table(u32 table_index);
 
diff --git a/drivers/acpi/acpica/dsopcode.c b/drivers/acpi/acpica/dsopcode.c
index 639635291ab7..44c448269861 100644
--- a/drivers/acpi/acpica/dsopcode.c
+++ b/drivers/acpi/acpica/dsopcode.c
@@ -531,6 +531,7 @@ acpi_ds_eval_table_region_operands(struct acpi_walk_state *walk_state,
 
 	obj_desc->region.address = ACPI_PTR_TO_PHYSADDR(table);
 	obj_desc->region.length = table->length;
+	obj_desc->region.pointer = table;
 
 	ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "RgnObj %p Addr %8.8X%8.8X Len %X\n",
 			  obj_desc,
diff --git a/drivers/acpi/acpica/evhandler.c b/drivers/acpi/acpica/evhandler.c
index c0cd7147a5a3..8f43d38dc4ca 100644
--- a/drivers/acpi/acpica/evhandler.c
+++ b/drivers/acpi/acpica/evhandler.c
@@ -386,7 +386,7 @@ acpi_ev_install_space_handler(struct acpi_namespace_node *node,
 		case ACPI_ADR_SPACE_DATA_TABLE:
 
 			handler = acpi_ex_data_table_space_handler;
-			setup = NULL;
+			setup = acpi_ev_data_table_region_setup;
 			break;
 
 		default:
diff --git a/drivers/acpi/acpica/evregion.c b/drivers/acpi/acpica/evregion.c
index 4ef43c8ef5e7..b9d77d327d38 100644
--- a/drivers/acpi/acpica/evregion.c
+++ b/drivers/acpi/acpica/evregion.c
@@ -162,6 +162,16 @@ acpi_ev_address_space_dispatch(union acpi_operand_object *region_obj,
 			return_ACPI_STATUS(AE_NOT_EXIST);
 		}
 
+		if (region_obj->region.space_id == ACPI_ADR_SPACE_PLATFORM_COMM) {
+			struct acpi_pcc_info *ctx =
+			    handler_desc->address_space.context;
+
+			ctx->internal_buffer =
+			    field_obj->field.internal_pcc_buffer;
+			ctx->length = (u16)region_obj->region.length;
+			ctx->subspace_id = (u8)region_obj->region.address;
+		}
+
 		/*
 		 * We must exit the interpreter because the region setup will
 		 * potentially execute control methods (for example, the _REG method
diff --git a/drivers/acpi/acpica/evrgnini.c b/drivers/acpi/acpica/evrgnini.c
index 984c172453bf..d28dee929e61 100644
--- a/drivers/acpi/acpica/evrgnini.c
+++ b/drivers/acpi/acpica/evrgnini.c
@@ -408,6 +408,58 @@ acpi_ev_cmos_region_setup(acpi_handle handle,
 
 /*******************************************************************************
  *
+ * FUNCTION:    acpi_ev_data_table_region_setup
+ *
+ * PARAMETERS:  handle              - Region we are interested in
+ *              function            - Start or stop
+ *              handler_context     - Address space handler context
+ *              region_context      - Region specific context
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Setup a data_table_region
+ *
+ * MUTEX:       Assumes namespace is not locked
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ev_data_table_region_setup(acpi_handle handle,
+				u32 function,
+				void *handler_context, void **region_context)
+{
+	union acpi_operand_object *region_desc =
+	    (union acpi_operand_object *)handle;
+	struct acpi_data_table_space_context *local_region_context;
+
+	ACPI_FUNCTION_TRACE(ev_data_table_region_setup);
+
+	if (function == ACPI_REGION_DEACTIVATE) {
+		if (*region_context) {
+			ACPI_FREE(*region_context);
+			*region_context = NULL;
+		}
+		return_ACPI_STATUS(AE_OK);
+	}
+
+	/* Create a new context */
+
+	local_region_context =
+	    ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_data_table_space_context));
+	if (!(local_region_context)) {
+		return_ACPI_STATUS(AE_NO_MEMORY);
+	}
+
+	/* Save the data table pointer for use in the handler */
+
+	local_region_context->pointer = region_desc->region.pointer;
+
+	*region_context = local_region_context;
+	return_ACPI_STATUS(AE_OK);
+}
+
+/*******************************************************************************
+ *
  * FUNCTION:    acpi_ev_default_region_setup
  *
  * PARAMETERS:  handle              - Region we are interested in
diff --git a/drivers/acpi/acpica/exconfig.c b/drivers/acpi/acpica/exconfig.c
index 0cd9b3738e76..6c2685a6a4c1 100644
--- a/drivers/acpi/acpica/exconfig.c
+++ b/drivers/acpi/acpica/exconfig.c
@@ -411,7 +411,7 @@ acpi_ex_load_op(union acpi_operand_object *obj_desc,
 	acpi_ex_exit_interpreter();
 	status = acpi_tb_install_and_load_table(ACPI_PTR_TO_PHYSADDR(table),
 						ACPI_TABLE_ORIGIN_INTERNAL_VIRTUAL,
-						TRUE, &table_index);
+						table, TRUE, &table_index);
 	acpi_ex_enter_interpreter();
 	if (ACPI_FAILURE(status)) {
 
diff --git a/drivers/acpi/acpica/excreate.c b/drivers/acpi/acpica/excreate.c
index 80b52ad55775..deb3674ae726 100644
--- a/drivers/acpi/acpica/excreate.c
+++ b/drivers/acpi/acpica/excreate.c
@@ -279,6 +279,7 @@ acpi_ex_create_region(u8 * aml_start,
 	obj_desc->region.space_id = space_id;
 	obj_desc->region.address = 0;
 	obj_desc->region.length = 0;
+	obj_desc->region.pointer = NULL;
 	obj_desc->region.node = node;
 	obj_desc->region.handler = NULL;
 	obj_desc->common.flags &=
diff --git a/drivers/acpi/acpica/exfield.c b/drivers/acpi/acpica/exfield.c
index 06f3c9df1e22..8618500f23b3 100644
--- a/drivers/acpi/acpica/exfield.c
+++ b/drivers/acpi/acpica/exfield.c
@@ -330,12 +330,7 @@ acpi_ex_write_data_to_field(union acpi_operand_object *source_desc,
 		       obj_desc->field.base_byte_offset,
 		       source_desc->buffer.pointer, data_length);
 
-		if ((obj_desc->field.region_obj->region.address ==
-		     PCC_MASTER_SUBSPACE
-		     && MASTER_SUBSPACE_COMMAND(obj_desc->field.
-						base_byte_offset))
-		    || GENERIC_SUBSPACE_COMMAND(obj_desc->field.
-						base_byte_offset)) {
+		if (MASTER_SUBSPACE_COMMAND(obj_desc->field.base_byte_offset)) {
 
 			/* Perform the write */
 
diff --git a/drivers/acpi/acpica/exoparg1.c b/drivers/acpi/acpica/exoparg1.c
index b639e930d642..44b7c350ed5c 100644
--- a/drivers/acpi/acpica/exoparg1.c
+++ b/drivers/acpi/acpica/exoparg1.c
@@ -1007,7 +1007,8 @@ acpi_status acpi_ex_opcode_1A_0T_1R(struct acpi_walk_state *walk_state)
 						    (walk_state, return_desc,
 						     &temp_desc);
 						if (ACPI_FAILURE(status)) {
-							goto cleanup;
+							return_ACPI_STATUS
+							    (status);
 						}
 
 						return_desc = temp_desc;
diff --git a/drivers/acpi/acpica/exregion.c b/drivers/acpi/acpica/exregion.c
index 82b713a9a193..48c19908fa4e 100644
--- a/drivers/acpi/acpica/exregion.c
+++ b/drivers/acpi/acpica/exregion.c
@@ -509,8 +509,15 @@ acpi_ex_data_table_space_handler(u32 function,
 				 u64 *value,
 				 void *handler_context, void *region_context)
 {
+	struct acpi_data_table_space_context *mapping;
+	char *pointer;
+
 	ACPI_FUNCTION_TRACE(ex_data_table_space_handler);
 
+	mapping = (struct acpi_data_table_space_context *) region_context;
+	pointer = ACPI_CAST_PTR(char, mapping->pointer) +
+	    (address - ACPI_PTR_TO_PHYSADDR(mapping->pointer));
+
 	/*
 	 * Perform the memory read or write. The bit_width was already
 	 * validated.
@@ -518,14 +525,14 @@ acpi_ex_data_table_space_handler(u32 function,
 	switch (function) {
 	case ACPI_READ:
 
-		memcpy(ACPI_CAST_PTR(char, value),
-		       ACPI_PHYSADDR_TO_PTR(address), ACPI_DIV_8(bit_width));
+		memcpy(ACPI_CAST_PTR(char, value), pointer,
+		       ACPI_DIV_8(bit_width));
 		break;
 
 	case ACPI_WRITE:
 
-		memcpy(ACPI_PHYSADDR_TO_PTR(address),
-		       ACPI_CAST_PTR(char, value), ACPI_DIV_8(bit_width));
+		memcpy(pointer, ACPI_CAST_PTR(char, value),
+		       ACPI_DIV_8(bit_width));
 		break;
 
 	default:
diff --git a/drivers/acpi/acpica/hwesleep.c b/drivers/acpi/acpica/hwesleep.c
index 808fdf54aeeb..7ee2939c08cd 100644
--- a/drivers/acpi/acpica/hwesleep.c
+++ b/drivers/acpi/acpica/hwesleep.c
@@ -104,7 +104,9 @@ acpi_status acpi_hw_extended_sleep(u8 sleep_state)
 
 	/* Flush caches, as per ACPI specification */
 
-	ACPI_FLUSH_CPU_CACHE();
+	if (sleep_state < ACPI_STATE_S4) {
+		ACPI_FLUSH_CPU_CACHE();
+	}
 
 	status = acpi_os_enter_sleep(sleep_state, sleep_control, 0);
 	if (status == AE_CTRL_TERMINATE) {
diff --git a/drivers/acpi/acpica/hwsleep.c b/drivers/acpi/acpica/hwsleep.c
index 34a3825f25d3..5efa3d8e483e 100644
--- a/drivers/acpi/acpica/hwsleep.c
+++ b/drivers/acpi/acpica/hwsleep.c
@@ -110,7 +110,9 @@ acpi_status acpi_hw_legacy_sleep(u8 sleep_state)
 
 	/* Flush caches, as per ACPI specification */
 
-	ACPI_FLUSH_CPU_CACHE();
+	if (sleep_state < ACPI_STATE_S4) {
+		ACPI_FLUSH_CPU_CACHE();
+	}
 
 	status = acpi_os_enter_sleep(sleep_state, pm1a_control, pm1b_control);
 	if (status == AE_CTRL_TERMINATE) {
diff --git a/drivers/acpi/acpica/hwxfsleep.c b/drivers/acpi/acpica/hwxfsleep.c
index e4cde23a2906..ba77598ee43e 100644
--- a/drivers/acpi/acpica/hwxfsleep.c
+++ b/drivers/acpi/acpica/hwxfsleep.c
@@ -162,8 +162,6 @@ acpi_status acpi_enter_sleep_state_s4bios(void)
 		return_ACPI_STATUS(status);
 	}
 
-	ACPI_FLUSH_CPU_CACHE();
-
 	status = acpi_hw_write_port(acpi_gbl_FADT.smi_command,
 				    (u32)acpi_gbl_FADT.s4_bios_request, 8);
 	if (ACPI_FAILURE(status)) {
diff --git a/drivers/acpi/acpica/tbdata.c b/drivers/acpi/acpica/tbdata.c
index ebbca109edcb..20360a9db482 100644
--- a/drivers/acpi/acpica/tbdata.c
+++ b/drivers/acpi/acpica/tbdata.c
@@ -89,14 +89,27 @@ acpi_tb_init_table_descriptor(struct acpi_table_desc *table_desc,
 {
 
 	/*
-	 * Initialize the table descriptor. Set the pointer to NULL, since the
-	 * table is not fully mapped at this time.
+	 * Initialize the table descriptor. Set the pointer to NULL for external
+	 * tables, since the table is not fully mapped at this time.
 	 */
 	memset(table_desc, 0, sizeof(struct acpi_table_desc));
 	table_desc->address = address;
 	table_desc->length = table->length;
 	table_desc->flags = flags;
 	ACPI_MOVE_32_TO_32(table_desc->signature.ascii, table->signature);
+
+	switch (table_desc->flags & ACPI_TABLE_ORIGIN_MASK) {
+	case ACPI_TABLE_ORIGIN_INTERNAL_VIRTUAL:
+	case ACPI_TABLE_ORIGIN_EXTERNAL_VIRTUAL:
+
+		table_desc->pointer = table;
+		break;
+
+	case ACPI_TABLE_ORIGIN_INTERNAL_PHYSICAL:
+	default:
+
+		break;
+	}
 }
 
 /*******************************************************************************
@@ -132,9 +145,7 @@ acpi_tb_acquire_table(struct acpi_table_desc *table_desc,
 	case ACPI_TABLE_ORIGIN_INTERNAL_VIRTUAL:
 	case ACPI_TABLE_ORIGIN_EXTERNAL_VIRTUAL:
 
-		table = ACPI_CAST_PTR(struct acpi_table_header,
-				      ACPI_PHYSADDR_TO_PTR(table_desc->
-							   address));
+		table = table_desc->pointer;
 		break;
 
 	default:
@@ -196,6 +207,8 @@ acpi_tb_release_table(struct acpi_table_header *table,
  * PARAMETERS:  table_desc          - Table descriptor to be acquired
  *              address             - Address of the table
  *              flags               - Allocation flags of the table
+ *              table               - Pointer to the table (required for virtual
+ *                                    origins, optional for physical)
  *
  * RETURN:      Status
  *
@@ -208,49 +221,52 @@ acpi_tb_release_table(struct acpi_table_header *table,
 
 acpi_status
 acpi_tb_acquire_temp_table(struct acpi_table_desc *table_desc,
-			   acpi_physical_address address, u8 flags)
+			   acpi_physical_address address,
+			   u8 flags, struct acpi_table_header *table)
 {
-	struct acpi_table_header *table_header;
+	u8 mapped_table = FALSE;
 
 	switch (flags & ACPI_TABLE_ORIGIN_MASK) {
 	case ACPI_TABLE_ORIGIN_INTERNAL_PHYSICAL:
 
 		/* Get the length of the full table from the header */
 
-		table_header =
-		    acpi_os_map_memory(address,
-				       sizeof(struct acpi_table_header));
-		if (!table_header) {
-			return (AE_NO_MEMORY);
+		if (!table) {
+			table =
+			    acpi_os_map_memory(address,
+					       sizeof(struct
+						      acpi_table_header));
+			if (!table) {
+				return (AE_NO_MEMORY);
+			}
+
+			mapped_table = TRUE;
 		}
 
-		acpi_tb_init_table_descriptor(table_desc, address, flags,
-					      table_header);
-		acpi_os_unmap_memory(table_header,
-				     sizeof(struct acpi_table_header));
-		return (AE_OK);
+		break;
 
 	case ACPI_TABLE_ORIGIN_INTERNAL_VIRTUAL:
 	case ACPI_TABLE_ORIGIN_EXTERNAL_VIRTUAL:
 
-		table_header = ACPI_CAST_PTR(struct acpi_table_header,
-					     ACPI_PHYSADDR_TO_PTR(address));
-		if (!table_header) {
-			return (AE_NO_MEMORY);
+		if (!table) {
+			return (AE_BAD_PARAMETER);
 		}
 
-		acpi_tb_init_table_descriptor(table_desc, address, flags,
-					      table_header);
-		return (AE_OK);
+		break;
 
 	default:
 
-		break;
+		/* Table is not valid yet */
+
+		return (AE_NO_MEMORY);
 	}
 
-	/* Table is not valid yet */
+	acpi_tb_init_table_descriptor(table_desc, address, flags, table);
+	if (mapped_table) {
+		acpi_os_unmap_memory(table, sizeof(struct acpi_table_header));
+	}
 
-	return (AE_NO_MEMORY);
+	return (AE_OK);
 }
 
 /*******************************************************************************
@@ -335,7 +351,19 @@ void acpi_tb_invalidate_table(struct acpi_table_desc *table_desc)
 
 	acpi_tb_release_table(table_desc->pointer, table_desc->length,
 			      table_desc->flags);
-	table_desc->pointer = NULL;
+
+	switch (table_desc->flags & ACPI_TABLE_ORIGIN_MASK) {
+	case ACPI_TABLE_ORIGIN_INTERNAL_PHYSICAL:
+
+		table_desc->pointer = NULL;
+		break;
+
+	case ACPI_TABLE_ORIGIN_INTERNAL_VIRTUAL:
+	case ACPI_TABLE_ORIGIN_EXTERNAL_VIRTUAL:
+	default:
+
+		break;
+	}
 
 	return_VOID;
 }
@@ -959,6 +987,9 @@ acpi_tb_load_table(u32 table_index, struct acpi_namespace_node *parent_node)
  *
  * PARAMETERS:  address                 - Physical address of the table
  *              flags                   - Allocation flags of the table
+ *              table                   - Pointer to the table (required for
+ *                                        virtual origins, optional for
+ *                                        physical)
  *              override                - Whether override should be performed
  *              table_index             - Where table index is returned
  *
@@ -970,7 +1001,9 @@ acpi_tb_load_table(u32 table_index, struct acpi_namespace_node *parent_node)
 
 acpi_status
 acpi_tb_install_and_load_table(acpi_physical_address address,
-			       u8 flags, u8 override, u32 *table_index)
+			       u8 flags,
+			       struct acpi_table_header *table,
+			       u8 override, u32 *table_index)
 {
 	acpi_status status;
 	u32 i;
@@ -979,7 +1012,7 @@ acpi_tb_install_and_load_table(acpi_physical_address address,
 
 	/* Install the table and load it into the namespace */
 
-	status = acpi_tb_install_standard_table(address, flags, TRUE,
+	status = acpi_tb_install_standard_table(address, flags, table, TRUE,
 						override, &i);
 	if (ACPI_FAILURE(status)) {
 		goto exit;
diff --git a/drivers/acpi/acpica/tbfadt.c b/drivers/acpi/acpica/tbfadt.c
index 5174abfa8af9..047bd094ba68 100644
--- a/drivers/acpi/acpica/tbfadt.c
+++ b/drivers/acpi/acpica/tbfadt.c
@@ -313,7 +313,7 @@ void acpi_tb_parse_fadt(void)
 	acpi_tb_install_standard_table((acpi_physical_address)acpi_gbl_FADT.
 				       Xdsdt,
 				       ACPI_TABLE_ORIGIN_INTERNAL_PHYSICAL,
-				       FALSE, TRUE, &acpi_gbl_dsdt_index);
+				       NULL, FALSE, TRUE, &acpi_gbl_dsdt_index);
 
 	/* If Hardware Reduced flag is set, there is no FACS */
 
@@ -322,14 +322,14 @@ void acpi_tb_parse_fadt(void)
 			acpi_tb_install_standard_table((acpi_physical_address)
 						       acpi_gbl_FADT.facs,
 						       ACPI_TABLE_ORIGIN_INTERNAL_PHYSICAL,
-						       FALSE, TRUE,
+						       NULL, FALSE, TRUE,
 						       &acpi_gbl_facs_index);
 		}
 		if (acpi_gbl_FADT.Xfacs) {
 			acpi_tb_install_standard_table((acpi_physical_address)
 						       acpi_gbl_FADT.Xfacs,
 						       ACPI_TABLE_ORIGIN_INTERNAL_PHYSICAL,
-						       FALSE, TRUE,
+						       NULL, FALSE, TRUE,
 						       &acpi_gbl_xfacs_index);
 		}
 	}
diff --git a/drivers/acpi/acpica/tbinstal.c b/drivers/acpi/acpica/tbinstal.c
index 8d1e5b572493..5649f493a1ed 100644
--- a/drivers/acpi/acpica/tbinstal.c
+++ b/drivers/acpi/acpica/tbinstal.c
@@ -79,6 +79,8 @@ acpi_tb_install_table_with_override(struct acpi_table_desc *new_table_desc,
  * PARAMETERS:  address             - Address of the table (might be a virtual
  *                                    address depending on the table_flags)
  *              flags               - Flags for the table
+ *              table               - Pointer to the table (required for virtual
+ *                                    origins, optional for physical)
  *              reload              - Whether reload should be performed
  *              override            - Whether override should be performed
  *              table_index         - Where the table index is returned
@@ -96,6 +98,7 @@ acpi_tb_install_table_with_override(struct acpi_table_desc *new_table_desc,
 acpi_status
 acpi_tb_install_standard_table(acpi_physical_address address,
 			       u8 flags,
+			       struct acpi_table_header *table,
 			       u8 reload, u8 override, u32 *table_index)
 {
 	u32 i;
@@ -106,7 +109,8 @@ acpi_tb_install_standard_table(acpi_physical_address address,
 
 	/* Acquire a temporary table descriptor for validation */
 
-	status = acpi_tb_acquire_temp_table(&new_table_desc, address, flags);
+	status =
+	    acpi_tb_acquire_temp_table(&new_table_desc, address, flags, table);
 	if (ACPI_FAILURE(status)) {
 		ACPI_ERROR((AE_INFO,
 			    "Could not acquire table length at %8.8X%8.8X",
@@ -209,7 +213,8 @@ void acpi_tb_override_table(struct acpi_table_desc *old_table_desc)
 	if (ACPI_SUCCESS(status) && table) {
 		acpi_tb_acquire_temp_table(&new_table_desc,
 					   ACPI_PTR_TO_PHYSADDR(table),
-					   ACPI_TABLE_ORIGIN_EXTERNAL_VIRTUAL);
+					   ACPI_TABLE_ORIGIN_EXTERNAL_VIRTUAL,
+					   table);
 		ACPI_ERROR_ONLY(override_type = "Logical");
 		goto finish_override;
 	}
@@ -220,7 +225,8 @@ void acpi_tb_override_table(struct acpi_table_desc *old_table_desc)
 						 &address, &length);
 	if (ACPI_SUCCESS(status) && address && length) {
 		acpi_tb_acquire_temp_table(&new_table_desc, address,
-					   ACPI_TABLE_ORIGIN_INTERNAL_PHYSICAL);
+					   ACPI_TABLE_ORIGIN_INTERNAL_PHYSICAL,
+					   NULL);
 		ACPI_ERROR_ONLY(override_type = "Physical");
 		goto finish_override;
 	}
@@ -289,7 +295,8 @@ void acpi_tb_uninstall_table(struct acpi_table_desc *table_desc)
 
 	if ((table_desc->flags & ACPI_TABLE_ORIGIN_MASK) ==
 	    ACPI_TABLE_ORIGIN_INTERNAL_VIRTUAL) {
-		ACPI_FREE(ACPI_PHYSADDR_TO_PTR(table_desc->address));
+		ACPI_FREE(table_desc->pointer);
+		table_desc->pointer = NULL;
 	}
 
 	table_desc->address = ACPI_PTR_TO_PHYSADDR(NULL);
diff --git a/drivers/acpi/acpica/tbprint.c b/drivers/acpi/acpica/tbprint.c
index 254823d494a2..4dac16bd63d3 100644
--- a/drivers/acpi/acpica/tbprint.c
+++ b/drivers/acpi/acpica/tbprint.c
@@ -101,7 +101,8 @@ acpi_tb_print_table_header(acpi_physical_address address,
 		ACPI_INFO(("%-4.4s 0x%8.8X%8.8X %06X",
 			   header->signature, ACPI_FORMAT_UINT64(address),
 			   header->length));
-	} else if (ACPI_VALIDATE_RSDP_SIG(header->signature)) {
+	} else if (ACPI_VALIDATE_RSDP_SIG(ACPI_CAST_PTR(struct acpi_table_rsdp,
+							header)->signature)) {
 
 		/* RSDP has no common fields */
 
diff --git a/drivers/acpi/acpica/tbutils.c b/drivers/acpi/acpica/tbutils.c
index 4b9b329a5a92..5e8d50a4b6a9 100644
--- a/drivers/acpi/acpica/tbutils.c
+++ b/drivers/acpi/acpica/tbutils.c
@@ -328,7 +328,7 @@ acpi_tb_parse_root_table(acpi_physical_address rsdp_address)
 
 		status = acpi_tb_install_standard_table(address,
 							ACPI_TABLE_ORIGIN_INTERNAL_PHYSICAL,
-							FALSE, TRUE,
+							NULL, FALSE, TRUE,
 							&table_index);
 
 		if (ACPI_SUCCESS(status) &&
diff --git a/drivers/acpi/acpica/tbxfload.c b/drivers/acpi/acpica/tbxfload.c
index 38623049b962..87356d9ad613 100644
--- a/drivers/acpi/acpica/tbxfload.c
+++ b/drivers/acpi/acpica/tbxfload.c
@@ -227,9 +227,7 @@ unlock_and_exit:
  *
  * FUNCTION:    acpi_install_table
  *
- * PARAMETERS:  address             - Address of the ACPI table to be installed.
- *              physical            - Whether the address is a physical table
- *                                    address or not
+ * PARAMETERS:  table               - Pointer to the ACPI table to be installed.
  *
  * RETURN:      Status
  *
@@ -240,22 +238,17 @@ unlock_and_exit:
  ******************************************************************************/
 
 acpi_status ACPI_INIT_FUNCTION
-acpi_install_table(acpi_physical_address address, u8 physical)
+acpi_install_table(struct acpi_table_header *table)
 {
 	acpi_status status;
-	u8 flags;
 	u32 table_index;
 
 	ACPI_FUNCTION_TRACE(acpi_install_table);
 
-	if (physical) {
-		flags = ACPI_TABLE_ORIGIN_INTERNAL_PHYSICAL;
-	} else {
-		flags = ACPI_TABLE_ORIGIN_EXTERNAL_VIRTUAL;
-	}
-
-	status = acpi_tb_install_standard_table(address, flags,
-						FALSE, FALSE, &table_index);
+	status = acpi_tb_install_standard_table(ACPI_PTR_TO_PHYSADDR(table),
+						ACPI_TABLE_ORIGIN_EXTERNAL_VIRTUAL,
+						table, FALSE, FALSE,
+						&table_index);
 
 	return_ACPI_STATUS(status);
 }
@@ -264,6 +257,37 @@ ACPI_EXPORT_SYMBOL_INIT(acpi_install_table)
 
 /*******************************************************************************
  *
+ * FUNCTION:    acpi_install_physical_table
+ *
+ * PARAMETERS:  address             - Address of the ACPI table to be installed.
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Dynamically install an ACPI table.
+ *              Note: This function should only be invoked after
+ *                    acpi_initialize_tables() and before acpi_load_tables().
+ *
+ ******************************************************************************/
+acpi_status ACPI_INIT_FUNCTION
+acpi_install_physical_table(acpi_physical_address address)
+{
+	acpi_status status;
+	u32 table_index;
+
+	ACPI_FUNCTION_TRACE(acpi_install_physical_table);
+
+	status = acpi_tb_install_standard_table(address,
+						ACPI_TABLE_ORIGIN_INTERNAL_PHYSICAL,
+						NULL, FALSE, FALSE,
+						&table_index);
+
+	return_ACPI_STATUS(status);
+}
+
+ACPI_EXPORT_SYMBOL_INIT(acpi_install_physical_table)
+
+/*******************************************************************************
+ *
  * FUNCTION:    acpi_load_table
  *
  * PARAMETERS:  table               - Pointer to a buffer containing the ACPI
@@ -298,7 +322,7 @@ acpi_status acpi_load_table(struct acpi_table_header *table, u32 *table_idx)
 	ACPI_INFO(("Host-directed Dynamic ACPI Table Load:"));
 	status = acpi_tb_install_and_load_table(ACPI_PTR_TO_PHYSADDR(table),
 						ACPI_TABLE_ORIGIN_EXTERNAL_VIRTUAL,
-						FALSE, &table_index);
+						table, FALSE, &table_index);
 	if (table_idx) {
 		*table_idx = table_index;
 	}
diff --git a/drivers/acpi/acpica/utdelete.c b/drivers/acpi/acpica/utdelete.c
index e5ba9795ec69..8d7736d2d269 100644
--- a/drivers/acpi/acpica/utdelete.c
+++ b/drivers/acpi/acpica/utdelete.c
@@ -422,6 +422,7 @@ acpi_ut_update_ref_count(union acpi_operand_object *object, u32 action)
 			ACPI_WARNING((AE_INFO,
 				      "Obj %p, Reference Count is already zero, cannot decrement\n",
 				      object));
+			return;
 		}
 
 		ACPI_DEBUG_PRINT_RAW((ACPI_DB_ALLOCATIONS,
diff --git a/drivers/acpi/battery.c b/drivers/acpi/battery.c
index 8afa85d6eb6a..ea31ae01458b 100644
--- a/drivers/acpi/battery.c
+++ b/drivers/acpi/battery.c
@@ -52,7 +52,7 @@ static bool battery_driver_registered;
 static int battery_bix_broken_package;
 static int battery_notification_delay_ms;
 static int battery_ac_is_broken;
-static int battery_check_pmic = 1;
+static int battery_quirk_notcharging;
 static unsigned int cache_time = 1000;
 module_param(cache_time, uint, 0644);
 MODULE_PARM_DESC(cache_time, "cache time in milliseconds");
@@ -64,11 +64,6 @@ static const struct acpi_device_id battery_device_ids[] = {
 
 MODULE_DEVICE_TABLE(acpi, battery_device_ids);
 
-/* Lists of PMIC ACPI HIDs with an (often better) native battery driver */
-static const char * const acpi_battery_blacklist[] = {
-	"INT33F4", /* X-Powers AXP288 PMIC */
-};
-
 enum {
 	ACPI_BATTERY_ALARM_PRESENT,
 	ACPI_BATTERY_XINFO_PRESENT,
@@ -217,6 +212,8 @@ static int acpi_battery_get_property(struct power_supply *psy,
 			val->intval = POWER_SUPPLY_STATUS_CHARGING;
 		else if (acpi_battery_is_charged(battery))
 			val->intval = POWER_SUPPLY_STATUS_FULL;
+		else if (battery_quirk_notcharging)
+			val->intval = POWER_SUPPLY_STATUS_NOT_CHARGING;
 		else
 			val->intval = POWER_SUPPLY_STATUS_UNKNOWN;
 		break;
@@ -1104,10 +1101,9 @@ battery_ac_is_broken_quirk(const struct dmi_system_id *d)
 	return 0;
 }
 
-static int __init
-battery_do_not_check_pmic_quirk(const struct dmi_system_id *d)
+static int __init battery_quirk_not_charging(const struct dmi_system_id *d)
 {
-	battery_check_pmic = 0;
+	battery_quirk_notcharging = 1;
 	return 0;
 }
 
@@ -1140,19 +1136,16 @@ static const struct dmi_system_id bat_dmi_table[] __initconst = {
 		},
 	},
 	{
-		/* ECS EF20EA, AXP288 PMIC but uses separate fuel-gauge */
-		.callback = battery_do_not_check_pmic_quirk,
-		.matches = {
-			DMI_MATCH(DMI_PRODUCT_NAME, "EF20EA"),
-		},
-	},
-	{
-		/* Lenovo Ideapad Miix 320, AXP288 PMIC, separate fuel-gauge */
-		.callback = battery_do_not_check_pmic_quirk,
+		/*
+		 * On Lenovo ThinkPads the BIOS specification defines
+		 * a state when the bits for charging and discharging
+		 * are both set to 0. That state is "Not Charging".
+		 */
+		.callback = battery_quirk_not_charging,
+		.ident = "Lenovo ThinkPad",
 		.matches = {
 			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
-			DMI_MATCH(DMI_PRODUCT_NAME, "80XF"),
-			DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo MIIX 320-10ICR"),
+			DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad"),
 		},
 	},
 	{},
@@ -1279,19 +1272,12 @@ static struct acpi_driver acpi_battery_driver = {
 
 static void __init acpi_battery_init_async(void *unused, async_cookie_t cookie)
 {
-	unsigned int i;
 	int result;
 
-	dmi_check_system(bat_dmi_table);
+	if (acpi_quirk_skip_acpi_ac_and_battery())
+		return;
 
-	if (battery_check_pmic) {
-		for (i = 0; i < ARRAY_SIZE(acpi_battery_blacklist); i++)
-			if (acpi_dev_present(acpi_battery_blacklist[i], "1", -1)) {
-				pr_info("found native %s PMIC, not loading\n",
-					acpi_battery_blacklist[i]);
-				return;
-			}
-	}
+	dmi_check_system(bat_dmi_table);
 
 	result = acpi_bus_register_driver(&acpi_battery_driver);
 	battery_driver_registered = (result == 0);
diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c
index fa923a929224..75a61626eddd 100644
--- a/drivers/acpi/bus.c
+++ b/drivers/acpi/bus.c
@@ -98,8 +98,8 @@ int acpi_bus_get_status(struct acpi_device *device)
 	acpi_status status;
 	unsigned long long sta;
 
-	if (acpi_device_always_present(device)) {
-		acpi_set_device_status(device, ACPI_STA_DEFAULT);
+	if (acpi_device_override_status(device, &sta)) {
+		acpi_set_device_status(device, sta);
 		return 0;
 	}
 
@@ -1320,6 +1320,7 @@ static int __init acpi_init(void)
 		pr_debug("%s: kset create error\n", __func__);
 
 	init_prmt();
+	acpi_init_pcc();
 	result = acpi_bus_init();
 	if (result) {
 		kobject_put(acpi_kobj);
diff --git a/drivers/acpi/cppc_acpi.c b/drivers/acpi/cppc_acpi.c
index b62c87b8ce4a..e9ac5ea1dfc9 100644
--- a/drivers/acpi/cppc_acpi.c
+++ b/drivers/acpi/cppc_acpi.c
@@ -179,10 +179,11 @@ static struct attribute *cppc_attrs[] = {
 	&lowest_freq.attr,
 	NULL
 };
+ATTRIBUTE_GROUPS(cppc);
 
 static struct kobj_type cppc_ktype = {
 	.sysfs_ops = &kobj_sysfs_ops,
-	.default_attrs = cppc_attrs,
+	.default_groups = cppc_groups,
 };
 
 static int check_pcc_chan(int pcc_ss_id, bool chk_err_bit)
@@ -604,47 +605,30 @@ static bool is_cppc_supported(int revision, int num_ent)
 /*
  * An example CPC table looks like the following.
  *
- *	Name(_CPC, Package()
- *			{
- *			17,
- *			NumEntries
- *			1,
- *			// Revision
- *			ResourceTemplate(){Register(PCC, 32, 0, 0x120, 2)},
- *			// Highest Performance
- *			ResourceTemplate(){Register(PCC, 32, 0, 0x124, 2)},
- *			// Nominal Performance
- *			ResourceTemplate(){Register(PCC, 32, 0, 0x128, 2)},
- *			// Lowest Nonlinear Performance
- *			ResourceTemplate(){Register(PCC, 32, 0, 0x12C, 2)},
- *			// Lowest Performance
- *			ResourceTemplate(){Register(PCC, 32, 0, 0x130, 2)},
- *			// Guaranteed Performance Register
- *			ResourceTemplate(){Register(PCC, 32, 0, 0x110, 2)},
- *			// Desired Performance Register
- *			ResourceTemplate(){Register(SystemMemory, 0, 0, 0, 0)},
- *			..
- *			..
- *			..
- *
- *		}
+ *  Name (_CPC, Package() {
+ *      17,							// NumEntries
+ *      1,							// Revision
+ *      ResourceTemplate() {Register(PCC, 32, 0, 0x120, 2)},	// Highest Performance
+ *      ResourceTemplate() {Register(PCC, 32, 0, 0x124, 2)},	// Nominal Performance
+ *      ResourceTemplate() {Register(PCC, 32, 0, 0x128, 2)},	// Lowest Nonlinear Performance
+ *      ResourceTemplate() {Register(PCC, 32, 0, 0x12C, 2)},	// Lowest Performance
+ *      ResourceTemplate() {Register(PCC, 32, 0, 0x130, 2)},	// Guaranteed Performance Register
+ *      ResourceTemplate() {Register(PCC, 32, 0, 0x110, 2)},	// Desired Performance Register
+ *      ResourceTemplate() {Register(SystemMemory, 0, 0, 0, 0)},
+ *      ...
+ *      ...
+ *      ...
+ *  }
  * Each Register() encodes how to access that specific register.
  * e.g. a sample PCC entry has the following encoding:
  *
- *	Register (
- *		PCC,
- *		AddressSpaceKeyword
- *		8,
- *		//RegisterBitWidth
- *		8,
- *		//RegisterBitOffset
- *		0x30,
- *		//RegisterAddress
- *		9
- *		//AccessSize (subspace ID)
- *		0
- *		)
- *	}
+ *  Register (
+ *      PCC,	// AddressSpaceKeyword
+ *      8,	// RegisterBitWidth
+ *      8,	// RegisterBitOffset
+ *      0x30,	// RegisterAddress
+ *      9,	// AccessSize (subspace ID)
+ *  )
  */
 
 #ifndef init_freq_invariance_cppc
diff --git a/drivers/acpi/device_pm.c b/drivers/acpi/device_pm.c
index 19b33c028f35..cc6c97e7dcae 100644
--- a/drivers/acpi/device_pm.c
+++ b/drivers/acpi/device_pm.c
@@ -285,14 +285,12 @@ EXPORT_SYMBOL(acpi_device_set_power);
 
 int acpi_bus_set_power(acpi_handle handle, int state)
 {
-	struct acpi_device *device;
-	int result;
+	struct acpi_device *device = acpi_fetch_acpi_dev(handle);
 
-	result = acpi_bus_get_device(handle, &device);
-	if (result)
-		return result;
+	if (device)
+		return acpi_device_set_power(device, state);
 
-	return acpi_device_set_power(device, state);
+	return -ENODEV;
 }
 EXPORT_SYMBOL(acpi_bus_set_power);
 
@@ -410,21 +408,20 @@ EXPORT_SYMBOL_GPL(acpi_device_update_power);
 
 int acpi_bus_update_power(acpi_handle handle, int *state_p)
 {
-	struct acpi_device *device;
-	int result;
+	struct acpi_device *device = acpi_fetch_acpi_dev(handle);
 
-	result = acpi_bus_get_device(handle, &device);
-	return result ? result : acpi_device_update_power(device, state_p);
+	if (device)
+		return acpi_device_update_power(device, state_p);
+
+	return -ENODEV;
 }
 EXPORT_SYMBOL_GPL(acpi_bus_update_power);
 
 bool acpi_bus_power_manageable(acpi_handle handle)
 {
-	struct acpi_device *device;
-	int result;
+	struct acpi_device *device = acpi_fetch_acpi_dev(handle);
 
-	result = acpi_bus_get_device(handle, &device);
-	return result ? false : device->flags.power_manageable;
+	return device && device->flags.power_manageable;
 }
 EXPORT_SYMBOL(acpi_bus_power_manageable);
 
@@ -543,11 +540,9 @@ acpi_status acpi_remove_pm_notifier(struct acpi_device *adev)
 
 bool acpi_bus_can_wakeup(acpi_handle handle)
 {
-	struct acpi_device *device;
-	int result;
+	struct acpi_device *device = acpi_fetch_acpi_dev(handle);
 
-	result = acpi_bus_get_device(handle, &device);
-	return result ? false : device->wakeup.flags.valid;
+	return device && device->wakeup.flags.valid;
 }
 EXPORT_SYMBOL(acpi_bus_can_wakeup);
 
diff --git a/drivers/acpi/device_sysfs.c b/drivers/acpi/device_sysfs.c
index 61271e61c307..d5d6403ba07b 100644
--- a/drivers/acpi/device_sysfs.c
+++ b/drivers/acpi/device_sysfs.c
@@ -53,6 +53,7 @@ static struct attribute *acpi_data_node_default_attrs[] = {
 	&data_node_path.attr,
 	NULL
 };
+ATTRIBUTE_GROUPS(acpi_data_node_default);
 
 #define to_data_node(k) container_of(k, struct acpi_data_node, kobj)
 #define to_attr(a) container_of(a, struct acpi_data_node_attr, attr)
@@ -79,7 +80,7 @@ static void acpi_data_node_release(struct kobject *kobj)
 
 static struct kobj_type acpi_data_node_ktype = {
 	.sysfs_ops = &acpi_data_node_sysfs_ops,
-	.default_attrs = acpi_data_node_default_attrs,
+	.default_groups = acpi_data_node_default_groups,
 	.release = acpi_data_node_release,
 };
 
diff --git a/drivers/acpi/dock.c b/drivers/acpi/dock.c
index c8e9b962e18c..a89bdbe00184 100644
--- a/drivers/acpi/dock.c
+++ b/drivers/acpi/dock.c
@@ -489,9 +489,8 @@ static ssize_t docked_show(struct device *dev,
 			   struct device_attribute *attr, char *buf)
 {
 	struct dock_station *dock_station = dev->platform_data;
-	struct acpi_device *adev = NULL;
+	struct acpi_device *adev = acpi_fetch_acpi_dev(dock_station->handle);
 
-	acpi_bus_get_device(dock_station->handle, &adev);
 	return sysfs_emit(buf, "%u\n", acpi_device_enumerated(adev));
 }
 static DEVICE_ATTR_RO(docked);
diff --git a/drivers/acpi/dptf/dptf_pch_fivr.c b/drivers/acpi/dptf/dptf_pch_fivr.c
index f4e9c2ef2f88..e7ab0fc90db9 100644
--- a/drivers/acpi/dptf/dptf_pch_fivr.c
+++ b/drivers/acpi/dptf/dptf_pch_fivr.c
@@ -46,7 +46,7 @@ release_buffer:
 }
 
 /*
- * Presentation of attributes which are defined for INT1045
+ * Presentation of attributes which are defined for INTC10xx
  * They are:
  * freq_mhz_low_clock : Set PCH FIVR switching freq for
  *			FIVR clock 19.2MHz and 24MHz
diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c
index a6366d3f0c78..0077d2c85df8 100644
--- a/drivers/acpi/ec.c
+++ b/drivers/acpi/ec.c
@@ -92,8 +92,6 @@ enum ec_command {
 
 enum {
 	EC_FLAGS_QUERY_ENABLED,		/* Query is enabled */
-	EC_FLAGS_QUERY_PENDING,		/* Query is pending */
-	EC_FLAGS_QUERY_GUARDING,	/* Guard for SCI_EVT check */
 	EC_FLAGS_EVENT_HANDLER_INSTALLED,	/* Event handler installed */
 	EC_FLAGS_EC_HANDLER_INSTALLED,	/* OpReg handler installed */
 	EC_FLAGS_QUERY_METHODS_INSTALLED, /* _Qxx handlers installed */
@@ -166,12 +164,12 @@ struct acpi_ec_query {
 	struct transaction transaction;
 	struct work_struct work;
 	struct acpi_ec_query_handler *handler;
+	struct acpi_ec *ec;
 };
 
-static int acpi_ec_query(struct acpi_ec *ec, u8 *data);
-static void advance_transaction(struct acpi_ec *ec, bool interrupt);
+static int acpi_ec_submit_query(struct acpi_ec *ec);
+static bool advance_transaction(struct acpi_ec *ec, bool interrupt);
 static void acpi_ec_event_handler(struct work_struct *work);
-static void acpi_ec_event_processor(struct work_struct *work);
 
 struct acpi_ec *first_ec;
 EXPORT_SYMBOL(first_ec);
@@ -443,24 +441,51 @@ static bool acpi_ec_submit_flushable_request(struct acpi_ec *ec)
 	return true;
 }
 
-static void acpi_ec_submit_query(struct acpi_ec *ec)
+static bool acpi_ec_submit_event(struct acpi_ec *ec)
 {
 	acpi_ec_mask_events(ec);
 	if (!acpi_ec_event_enabled(ec))
-		return;
-	if (!test_and_set_bit(EC_FLAGS_QUERY_PENDING, &ec->flags)) {
+		return false;
+
+	if (ec->event_state == EC_EVENT_READY) {
 		ec_dbg_evt("Command(%s) submitted/blocked",
 			   acpi_ec_cmd_string(ACPI_EC_COMMAND_QUERY));
-		ec->nr_pending_queries++;
-		queue_work(ec_wq, &ec->work);
+
+		ec->event_state = EC_EVENT_IN_PROGRESS;
+		/*
+		 * If events_to_process is greqter than 0 at this point, the
+		 * while () loop in acpi_ec_event_handler() is still running
+		 * and incrementing events_to_process will cause it to invoke
+		 * acpi_ec_submit_query() once more, so it is not necessary to
+		 * queue up the event work to start the same loop again.
+		 */
+		if (ec->events_to_process++ > 0)
+			return true;
+
+		ec->events_in_progress++;
+		return queue_work(ec_wq, &ec->work);
 	}
+
+	/*
+	 * The event handling work has not been completed yet, so it needs to be
+	 * flushed.
+	 */
+	return true;
+}
+
+static void acpi_ec_complete_event(struct acpi_ec *ec)
+{
+	if (ec->event_state == EC_EVENT_IN_PROGRESS)
+		ec->event_state = EC_EVENT_COMPLETE;
 }
 
-static void acpi_ec_complete_query(struct acpi_ec *ec)
+static void acpi_ec_close_event(struct acpi_ec *ec)
 {
-	if (test_and_clear_bit(EC_FLAGS_QUERY_PENDING, &ec->flags))
+	if (ec->event_state != EC_EVENT_READY)
 		ec_dbg_evt("Command(%s) unblocked",
 			   acpi_ec_cmd_string(ACPI_EC_COMMAND_QUERY));
+
+	ec->event_state = EC_EVENT_READY;
 	acpi_ec_unmask_events(ec);
 }
 
@@ -487,12 +512,10 @@ static inline void __acpi_ec_disable_event(struct acpi_ec *ec)
  */
 static void acpi_ec_clear(struct acpi_ec *ec)
 {
-	int i, status;
-	u8 value = 0;
+	int i;
 
 	for (i = 0; i < ACPI_EC_CLEAR_MAX; i++) {
-		status = acpi_ec_query(ec, &value);
-		if (status || !value)
+		if (acpi_ec_submit_query(ec))
 			break;
 	}
 	if (unlikely(i == ACPI_EC_CLEAR_MAX))
@@ -518,7 +541,7 @@ static void acpi_ec_enable_event(struct acpi_ec *ec)
 #ifdef CONFIG_PM_SLEEP
 static void __acpi_ec_flush_work(void)
 {
-	drain_workqueue(ec_wq); /* flush ec->work */
+	flush_workqueue(ec_wq); /* flush ec->work */
 	flush_workqueue(ec_query_wq); /* flush queries */
 }
 
@@ -549,8 +572,8 @@ void acpi_ec_flush_work(void)
 
 static bool acpi_ec_guard_event(struct acpi_ec *ec)
 {
-	bool guarded = true;
 	unsigned long flags;
+	bool guarded;
 
 	spin_lock_irqsave(&ec->lock, flags);
 	/*
@@ -559,19 +582,15 @@ static bool acpi_ec_guard_event(struct acpi_ec *ec)
 	 * evaluating _Qxx, so we need to re-check SCI_EVT after waiting an
 	 * acceptable period.
 	 *
-	 * The guarding period begins when EC_FLAGS_QUERY_PENDING is
-	 * flagged, which means SCI_EVT check has just been performed.
-	 * But if the current transaction is ACPI_EC_COMMAND_QUERY, the
-	 * guarding should have already been performed (via
-	 * EC_FLAGS_QUERY_GUARDING) and should not be applied so that the
-	 * ACPI_EC_COMMAND_QUERY transaction can be transitioned into
-	 * ACPI_EC_COMMAND_POLL state immediately.
+	 * The guarding period is applicable if the event state is not
+	 * EC_EVENT_READY, but otherwise if the current transaction is of the
+	 * ACPI_EC_COMMAND_QUERY type, the guarding should have elapsed already
+	 * and it should not be applied to let the transaction transition into
+	 * the ACPI_EC_COMMAND_POLL state immediately.
 	 */
-	if (ec_event_clearing == ACPI_EC_EVT_TIMING_STATUS ||
-	    ec_event_clearing == ACPI_EC_EVT_TIMING_QUERY ||
-	    !test_bit(EC_FLAGS_QUERY_PENDING, &ec->flags) ||
-	    (ec->curr && ec->curr->command == ACPI_EC_COMMAND_QUERY))
-		guarded = false;
+	guarded = ec_event_clearing == ACPI_EC_EVT_TIMING_EVENT &&
+		ec->event_state != EC_EVENT_READY &&
+		(!ec->curr || ec->curr->command != ACPI_EC_COMMAND_QUERY);
 	spin_unlock_irqrestore(&ec->lock, flags);
 	return guarded;
 }
@@ -603,16 +622,26 @@ static int ec_transaction_completed(struct acpi_ec *ec)
 static inline void ec_transaction_transition(struct acpi_ec *ec, unsigned long flag)
 {
 	ec->curr->flags |= flag;
-	if (ec->curr->command == ACPI_EC_COMMAND_QUERY) {
-		if (ec_event_clearing == ACPI_EC_EVT_TIMING_STATUS &&
-		    flag == ACPI_EC_COMMAND_POLL)
-			acpi_ec_complete_query(ec);
-		if (ec_event_clearing == ACPI_EC_EVT_TIMING_QUERY &&
-		    flag == ACPI_EC_COMMAND_COMPLETE)
-			acpi_ec_complete_query(ec);
-		if (ec_event_clearing == ACPI_EC_EVT_TIMING_EVENT &&
-		    flag == ACPI_EC_COMMAND_COMPLETE)
-			set_bit(EC_FLAGS_QUERY_GUARDING, &ec->flags);
+
+	if (ec->curr->command != ACPI_EC_COMMAND_QUERY)
+		return;
+
+	switch (ec_event_clearing) {
+	case ACPI_EC_EVT_TIMING_STATUS:
+		if (flag == ACPI_EC_COMMAND_POLL)
+			acpi_ec_close_event(ec);
+
+		return;
+
+	case ACPI_EC_EVT_TIMING_QUERY:
+		if (flag == ACPI_EC_COMMAND_COMPLETE)
+			acpi_ec_close_event(ec);
+
+		return;
+
+	case ACPI_EC_EVT_TIMING_EVENT:
+		if (flag == ACPI_EC_COMMAND_COMPLETE)
+			acpi_ec_complete_event(ec);
 	}
 }
 
@@ -626,10 +655,11 @@ static void acpi_ec_spurious_interrupt(struct acpi_ec *ec, struct transaction *t
 		acpi_ec_mask_events(ec);
 }
 
-static void advance_transaction(struct acpi_ec *ec, bool interrupt)
+static bool advance_transaction(struct acpi_ec *ec, bool interrupt)
 {
 	struct transaction *t = ec->curr;
 	bool wakeup = false;
+	bool ret = false;
 	u8 status;
 
 	ec_dbg_stm("%s (%d)", interrupt ? "IRQ" : "TASK", smp_processor_id());
@@ -657,11 +687,9 @@ static void advance_transaction(struct acpi_ec *ec, bool interrupt)
 	 */
 	if (!t || !(t->flags & ACPI_EC_COMMAND_POLL)) {
 		if (ec_event_clearing == ACPI_EC_EVT_TIMING_EVENT &&
-		    (!ec->nr_pending_queries ||
-		     test_bit(EC_FLAGS_QUERY_GUARDING, &ec->flags))) {
-			clear_bit(EC_FLAGS_QUERY_GUARDING, &ec->flags);
-			acpi_ec_complete_query(ec);
-		}
+		    ec->event_state == EC_EVENT_COMPLETE)
+			acpi_ec_close_event(ec);
+
 		if (!t)
 			goto out;
 	}
@@ -696,10 +724,12 @@ static void advance_transaction(struct acpi_ec *ec, bool interrupt)
 
 out:
 	if (status & ACPI_EC_FLAG_SCI)
-		acpi_ec_submit_query(ec);
+		ret = acpi_ec_submit_event(ec);
 
 	if (wakeup && interrupt)
 		wake_up(&ec->wait);
+
+	return ret;
 }
 
 static void start_transaction(struct acpi_ec *ec)
@@ -1103,7 +1133,30 @@ void acpi_ec_remove_query_handler(struct acpi_ec *ec, u8 query_bit)
 }
 EXPORT_SYMBOL_GPL(acpi_ec_remove_query_handler);
 
-static struct acpi_ec_query *acpi_ec_create_query(u8 *pval)
+static void acpi_ec_event_processor(struct work_struct *work)
+{
+	struct acpi_ec_query *q = container_of(work, struct acpi_ec_query, work);
+	struct acpi_ec_query_handler *handler = q->handler;
+	struct acpi_ec *ec = q->ec;
+
+	ec_dbg_evt("Query(0x%02x) started", handler->query_bit);
+
+	if (handler->func)
+		handler->func(handler->data);
+	else if (handler->handle)
+		acpi_evaluate_object(handler->handle, NULL, NULL, NULL);
+
+	ec_dbg_evt("Query(0x%02x) stopped", handler->query_bit);
+
+	spin_lock_irq(&ec->lock);
+	ec->queries_in_progress--;
+	spin_unlock_irq(&ec->lock);
+
+	acpi_ec_put_query_handler(handler);
+	kfree(q);
+}
+
+static struct acpi_ec_query *acpi_ec_create_query(struct acpi_ec *ec, u8 *pval)
 {
 	struct acpi_ec_query *q;
 	struct transaction *t;
@@ -1111,44 +1164,23 @@ static struct acpi_ec_query *acpi_ec_create_query(u8 *pval)
 	q = kzalloc(sizeof (struct acpi_ec_query), GFP_KERNEL);
 	if (!q)
 		return NULL;
+
 	INIT_WORK(&q->work, acpi_ec_event_processor);
 	t = &q->transaction;
 	t->command = ACPI_EC_COMMAND_QUERY;
 	t->rdata = pval;
 	t->rlen = 1;
+	q->ec = ec;
 	return q;
 }
 
-static void acpi_ec_delete_query(struct acpi_ec_query *q)
-{
-	if (q) {
-		if (q->handler)
-			acpi_ec_put_query_handler(q->handler);
-		kfree(q);
-	}
-}
-
-static void acpi_ec_event_processor(struct work_struct *work)
-{
-	struct acpi_ec_query *q = container_of(work, struct acpi_ec_query, work);
-	struct acpi_ec_query_handler *handler = q->handler;
-
-	ec_dbg_evt("Query(0x%02x) started", handler->query_bit);
-	if (handler->func)
-		handler->func(handler->data);
-	else if (handler->handle)
-		acpi_evaluate_object(handler->handle, NULL, NULL, NULL);
-	ec_dbg_evt("Query(0x%02x) stopped", handler->query_bit);
-	acpi_ec_delete_query(q);
-}
-
-static int acpi_ec_query(struct acpi_ec *ec, u8 *data)
+static int acpi_ec_submit_query(struct acpi_ec *ec)
 {
+	struct acpi_ec_query *q;
 	u8 value = 0;
 	int result;
-	struct acpi_ec_query *q;
 
-	q = acpi_ec_create_query(&value);
+	q = acpi_ec_create_query(ec, &value);
 	if (!q)
 		return -ENOMEM;
 
@@ -1158,11 +1190,14 @@ static int acpi_ec_query(struct acpi_ec *ec, u8 *data)
 	 * bit to be cleared (and thus clearing the interrupt source).
 	 */
 	result = acpi_ec_transaction(ec, &q->transaction);
-	if (!value)
-		result = -ENODATA;
 	if (result)
 		goto err_exit;
 
+	if (!value) {
+		result = -ENODATA;
+		goto err_exit;
+	}
+
 	q->handler = acpi_ec_get_query_handler_by_value(ec, value);
 	if (!q->handler) {
 		result = -ENODATA;
@@ -1170,76 +1205,73 @@ static int acpi_ec_query(struct acpi_ec *ec, u8 *data)
 	}
 
 	/*
-	 * It is reported that _Qxx are evaluated in a parallel way on
-	 * Windows:
+	 * It is reported that _Qxx are evaluated in a parallel way on Windows:
 	 * https://bugzilla.kernel.org/show_bug.cgi?id=94411
 	 *
-	 * Put this log entry before schedule_work() in order to make
-	 * it appearing before any other log entries occurred during the
-	 * work queue execution.
+	 * Put this log entry before queue_work() to make it appear in the log
+	 * before any other messages emitted during workqueue handling.
 	 */
 	ec_dbg_evt("Query(0x%02x) scheduled", value);
-	if (!queue_work(ec_query_wq, &q->work)) {
-		ec_dbg_evt("Query(0x%02x) overlapped", value);
-		result = -EBUSY;
-	}
 
-err_exit:
-	if (result)
-		acpi_ec_delete_query(q);
-	if (data)
-		*data = value;
-	return result;
-}
+	spin_lock_irq(&ec->lock);
 
-static void acpi_ec_check_event(struct acpi_ec *ec)
-{
-	unsigned long flags;
+	ec->queries_in_progress++;
+	queue_work(ec_query_wq, &q->work);
 
-	if (ec_event_clearing == ACPI_EC_EVT_TIMING_EVENT) {
-		if (ec_guard(ec)) {
-			spin_lock_irqsave(&ec->lock, flags);
-			/*
-			 * Take care of the SCI_EVT unless no one else is
-			 * taking care of it.
-			 */
-			if (!ec->curr)
-				advance_transaction(ec, false);
-			spin_unlock_irqrestore(&ec->lock, flags);
-		}
-	}
+	spin_unlock_irq(&ec->lock);
+
+	return 0;
+
+err_exit:
+	kfree(q);
+
+	return result;
 }
 
 static void acpi_ec_event_handler(struct work_struct *work)
 {
-	unsigned long flags;
 	struct acpi_ec *ec = container_of(work, struct acpi_ec, work);
 
 	ec_dbg_evt("Event started");
 
-	spin_lock_irqsave(&ec->lock, flags);
-	while (ec->nr_pending_queries) {
-		spin_unlock_irqrestore(&ec->lock, flags);
-		(void)acpi_ec_query(ec, NULL);
-		spin_lock_irqsave(&ec->lock, flags);
-		ec->nr_pending_queries--;
-		/*
-		 * Before exit, make sure that this work item can be
-		 * scheduled again. There might be QR_EC failures, leaving
-		 * EC_FLAGS_QUERY_PENDING uncleared and preventing this work
-		 * item from being scheduled again.
-		 */
-		if (!ec->nr_pending_queries) {
-			if (ec_event_clearing == ACPI_EC_EVT_TIMING_STATUS ||
-			    ec_event_clearing == ACPI_EC_EVT_TIMING_QUERY)
-				acpi_ec_complete_query(ec);
-		}
+	spin_lock_irq(&ec->lock);
+
+	while (ec->events_to_process) {
+		spin_unlock_irq(&ec->lock);
+
+		acpi_ec_submit_query(ec);
+
+		spin_lock_irq(&ec->lock);
+		ec->events_to_process--;
 	}
-	spin_unlock_irqrestore(&ec->lock, flags);
+
+	/*
+	 * Before exit, make sure that the it will be possible to queue up the
+	 * event handling work again regardless of whether or not the query
+	 * queued up above is processed successfully.
+	 */
+	if (ec_event_clearing == ACPI_EC_EVT_TIMING_EVENT)
+		acpi_ec_complete_event(ec);
+	else
+		acpi_ec_close_event(ec);
+
+	spin_unlock_irq(&ec->lock);
 
 	ec_dbg_evt("Event stopped");
 
-	acpi_ec_check_event(ec);
+	if (ec_event_clearing == ACPI_EC_EVT_TIMING_EVENT && ec_guard(ec)) {
+		spin_lock_irq(&ec->lock);
+
+		/* Take care of SCI_EVT unless someone else is doing that. */
+		if (!ec->curr)
+			advance_transaction(ec, false);
+
+		spin_unlock_irq(&ec->lock);
+	}
+
+	spin_lock_irq(&ec->lock);
+	ec->events_in_progress--;
+	spin_unlock_irq(&ec->lock);
 }
 
 static void acpi_ec_handle_interrupt(struct acpi_ec *ec)
@@ -2021,7 +2053,7 @@ void acpi_ec_set_gpe_wake_mask(u8 action)
 
 bool acpi_ec_dispatch_gpe(void)
 {
-	u32 ret;
+	bool work_in_progress = false;
 
 	if (!first_ec)
 		return acpi_any_gpe_status_set(U32_MAX);
@@ -2037,12 +2069,31 @@ bool acpi_ec_dispatch_gpe(void)
 	 * Dispatch the EC GPE in-band, but do not report wakeup in any case
 	 * to allow the caller to process events properly after that.
 	 */
-	ret = acpi_dispatch_gpe(NULL, first_ec->gpe);
-	if (ret == ACPI_INTERRUPT_HANDLED)
-		pm_pr_dbg("ACPI EC GPE dispatched\n");
+	spin_lock_irq(&first_ec->lock);
+
+	if (acpi_ec_gpe_status_set(first_ec))
+		work_in_progress = advance_transaction(first_ec, false);
+
+	spin_unlock_irq(&first_ec->lock);
+
+	if (!work_in_progress)
+		return false;
+
+	pm_pr_dbg("ACPI EC GPE dispatched\n");
+
+	/* Drain EC work. */
+	do {
+		acpi_ec_flush_work();
+
+		pm_pr_dbg("ACPI EC work flushed\n");
+
+		spin_lock_irq(&first_ec->lock);
+
+		work_in_progress = first_ec->events_in_progress +
+			first_ec->queries_in_progress > 0;
 
-	/* Flush the event and query workqueues. */
-	acpi_ec_flush_work();
+		spin_unlock_irq(&first_ec->lock);
+	} while (work_in_progress && !pm_wakeup_pending());
 
 	return false;
 }
diff --git a/drivers/acpi/ec_sys.c b/drivers/acpi/ec_sys.c
index fd39c14493ab..c074a0fae059 100644
--- a/drivers/acpi/ec_sys.c
+++ b/drivers/acpi/ec_sys.c
@@ -19,7 +19,7 @@ MODULE_DESCRIPTION("ACPI EC sysfs access driver");
 MODULE_LICENSE("GPL");
 
 static bool write_support;
-module_param(write_support, bool, 0644);
+module_param_hw(write_support, bool, other, 0644);
 MODULE_PARM_DESC(write_support, "Dangerous, reboot and removal of battery may "
 		 "be needed.");
 
diff --git a/drivers/acpi/internal.h b/drivers/acpi/internal.h
index d91b560e8867..1db3a2f81763 100644
--- a/drivers/acpi/internal.h
+++ b/drivers/acpi/internal.h
@@ -166,6 +166,13 @@ static inline void acpi_early_processor_osc(void) {}
 /* --------------------------------------------------------------------------
                                   Embedded Controller
    -------------------------------------------------------------------------- */
+
+enum acpi_ec_event_state {
+	EC_EVENT_READY = 0,	/* Event work can be submitted */
+	EC_EVENT_IN_PROGRESS,	/* Event work is pending or being processed */
+	EC_EVENT_COMPLETE,	/* Event work processing has completed */
+};
+
 struct acpi_ec {
 	acpi_handle handle;
 	int gpe;
@@ -182,7 +189,10 @@ struct acpi_ec {
 	spinlock_t lock;
 	struct work_struct work;
 	unsigned long timestamp;
-	unsigned long nr_pending_queries;
+	enum acpi_ec_event_state event_state;
+	unsigned int events_to_process;
+	unsigned int events_in_progress;
+	unsigned int queries_in_progress;
 	bool busy_polling;
 	unsigned int polling_guard;
 };
diff --git a/drivers/acpi/numa/srat.c b/drivers/acpi/numa/srat.c
index b8795fc49097..6c884f3e8332 100644
--- a/drivers/acpi/numa/srat.c
+++ b/drivers/acpi/numa/srat.c
@@ -254,9 +254,8 @@ acpi_numa_memory_affinity_init(struct acpi_srat_mem_affinity *ma)
 	}
 	if ((ma->flags & ACPI_SRAT_MEM_ENABLED) == 0)
 		goto out_err;
-	hotpluggable = ma->flags & ACPI_SRAT_MEM_HOT_PLUGGABLE;
-	if (hotpluggable && !IS_ENABLED(CONFIG_MEMORY_HOTPLUG))
-		goto out_err;
+	hotpluggable = IS_ENABLED(CONFIG_MEMORY_HOTPLUG) &&
+		(ma->flags & ACPI_SRAT_MEM_HOT_PLUGGABLE);
 
 	start = ma->base_address;
 	end = start + ma->length;
diff --git a/drivers/acpi/pci_link.c b/drivers/acpi/pci_link.c
index cb7b900d9466..d54fb8e54671 100644
--- a/drivers/acpi/pci_link.c
+++ b/drivers/acpi/pci_link.c
@@ -606,12 +606,10 @@ static int acpi_pci_link_allocate(struct acpi_pci_link *link)
 int acpi_pci_link_allocate_irq(acpi_handle handle, int index, int *triggering,
 			       int *polarity, char **name)
 {
-	int result;
-	struct acpi_device *device;
+	struct acpi_device *device = acpi_fetch_acpi_dev(handle);
 	struct acpi_pci_link *link;
 
-	result = acpi_bus_get_device(handle, &device);
-	if (result) {
+	if (!device) {
 		acpi_handle_err(handle, "Invalid link device\n");
 		return -1;
 	}
@@ -658,12 +656,10 @@ int acpi_pci_link_allocate_irq(acpi_handle handle, int index, int *triggering,
  */
 int acpi_pci_link_free_irq(acpi_handle handle)
 {
-	struct acpi_device *device;
+	struct acpi_device *device = acpi_fetch_acpi_dev(handle);
 	struct acpi_pci_link *link;
-	acpi_status result;
 
-	result = acpi_bus_get_device(handle, &device);
-	if (result) {
+	if (!device) {
 		acpi_handle_err(handle, "Invalid link device\n");
 		return -1;
 	}
diff --git a/drivers/acpi/pci_root.c b/drivers/acpi/pci_root.c
index ab2f7dfb0c44..b76db99cced3 100644
--- a/drivers/acpi/pci_root.c
+++ b/drivers/acpi/pci_root.c
@@ -67,11 +67,10 @@ static struct acpi_scan_handler pci_root_handler = {
  */
 int acpi_is_root_bridge(acpi_handle handle)
 {
+	struct acpi_device *device = acpi_fetch_acpi_dev(handle);
 	int ret;
-	struct acpi_device *device;
 
-	ret = acpi_bus_get_device(handle, &device);
-	if (ret)
+	if (!device)
 		return 0;
 
 	ret = acpi_match_device_ids(device, root_device_ids);
@@ -215,11 +214,10 @@ static acpi_status acpi_pci_query_osc(struct acpi_pci_root *root,
 
 struct acpi_pci_root *acpi_pci_find_root(acpi_handle handle)
 {
+	struct acpi_device *device = acpi_fetch_acpi_dev(handle);
 	struct acpi_pci_root *root;
-	struct acpi_device *device;
 
-	if (acpi_bus_get_device(handle, &device) ||
-	    acpi_match_device_ids(device, root_device_ids))
+	if (!device || acpi_match_device_ids(device, root_device_ids))
 		return NULL;
 
 	root = acpi_driver_data(device);
@@ -324,7 +322,7 @@ EXPORT_SYMBOL_GPL(acpi_get_pci_dev);
  * acpi_pci_osc_control_set - Request control of PCI root _OSC features.
  * @handle: ACPI handle of a PCI root bridge (or PCIe Root Complex).
  * @mask: Mask of _OSC bits to request control of, place to store control mask.
- * @req: Mask of _OSC bits the control of is essential to the caller.
+ * @support: _OSC supported capability.
  *
  * Run _OSC query for @mask and if that is successful, compare the returned
  * mask of control bits with @req.  If all of the @req bits are set in the
diff --git a/drivers/acpi/pmic/intel_pmic.c b/drivers/acpi/pmic/intel_pmic.c
index 9cde299eba88..f20dbda1a831 100644
--- a/drivers/acpi/pmic/intel_pmic.c
+++ b/drivers/acpi/pmic/intel_pmic.c
@@ -25,7 +25,7 @@ struct intel_pmic_opregion {
 	struct mutex lock;
 	struct acpi_lpat_conversion_table *lpat_table;
 	struct regmap *regmap;
-	struct intel_pmic_opregion_data *data;
+	const struct intel_pmic_opregion_data *data;
 	struct intel_pmic_regs_handler_ctx ctx;
 };
 
@@ -53,7 +53,7 @@ static acpi_status intel_pmic_power_handler(u32 function,
 {
 	struct intel_pmic_opregion *opregion = region_context;
 	struct regmap *regmap = opregion->regmap;
-	struct intel_pmic_opregion_data *d = opregion->data;
+	const struct intel_pmic_opregion_data *d = opregion->data;
 	int reg, bit, result;
 
 	if (bits != 32 || !value64)
@@ -95,7 +95,7 @@ static int pmic_read_temp(struct intel_pmic_opregion *opregion,
 		return 0;
 	}
 
-	temp = acpi_lpat_raw_to_temp(opregion->lpat_table, raw_temp);
+	temp = opregion->data->lpat_raw_to_temp(opregion->lpat_table, raw_temp);
 	if (temp < 0)
 		return temp;
 
@@ -135,7 +135,7 @@ static int pmic_thermal_aux(struct intel_pmic_opregion *opregion, int reg,
 static int pmic_thermal_pen(struct intel_pmic_opregion *opregion, int reg,
 			    int bit, u32 function, u64 *value)
 {
-	struct intel_pmic_opregion_data *d = opregion->data;
+	const struct intel_pmic_opregion_data *d = opregion->data;
 	struct regmap *regmap = opregion->regmap;
 
 	if (!d->get_policy || !d->update_policy)
@@ -171,7 +171,7 @@ static acpi_status intel_pmic_thermal_handler(u32 function,
 		void *handler_context, void *region_context)
 {
 	struct intel_pmic_opregion *opregion = region_context;
-	struct intel_pmic_opregion_data *d = opregion->data;
+	const struct intel_pmic_opregion_data *d = opregion->data;
 	int reg, bit, result;
 
 	if (bits != 32 || !value64)
@@ -255,7 +255,7 @@ static acpi_status intel_pmic_regs_handler(u32 function,
 
 int intel_pmic_install_opregion_handler(struct device *dev, acpi_handle handle,
 					struct regmap *regmap,
-					struct intel_pmic_opregion_data *d)
+					const struct intel_pmic_opregion_data *d)
 {
 	acpi_status status = AE_OK;
 	struct intel_pmic_opregion *opregion;
@@ -344,7 +344,7 @@ EXPORT_SYMBOL_GPL(intel_pmic_install_opregion_handler);
 int intel_soc_pmic_exec_mipi_pmic_seq_element(u16 i2c_address, u32 reg_address,
 					      u32 value, u32 mask)
 {
-	struct intel_pmic_opregion_data *d;
+	const struct intel_pmic_opregion_data *d;
 	int ret;
 
 	if (!intel_pmic_opregion) {
diff --git a/drivers/acpi/pmic/intel_pmic.h b/drivers/acpi/pmic/intel_pmic.h
index 89379476a1df..d956b03a6ca0 100644
--- a/drivers/acpi/pmic/intel_pmic.h
+++ b/drivers/acpi/pmic/intel_pmic.h
@@ -2,6 +2,8 @@
 #ifndef __INTEL_PMIC_H
 #define __INTEL_PMIC_H
 
+#include <acpi/acpi_lpat.h>
+
 struct pmic_table {
 	int address;	/* operation region address */
 	int reg;	/* corresponding thermal register */
@@ -17,6 +19,8 @@ struct intel_pmic_opregion_data {
 	int (*update_policy)(struct regmap *r, int reg, int bit, int enable);
 	int (*exec_mipi_pmic_seq_element)(struct regmap *r, u16 i2c_address,
 					  u32 reg_address, u32 value, u32 mask);
+	int (*lpat_raw_to_temp)(struct acpi_lpat_conversion_table *lpat_table,
+				int raw);
 	struct pmic_table *power_table;
 	int power_table_count;
 	struct pmic_table *thermal_table;
@@ -25,6 +29,8 @@ struct intel_pmic_opregion_data {
 	int pmic_i2c_address;
 };
 
-int intel_pmic_install_opregion_handler(struct device *dev, acpi_handle handle, struct regmap *regmap, struct intel_pmic_opregion_data *d);
+int intel_pmic_install_opregion_handler(struct device *dev, acpi_handle handle,
+					struct regmap *regmap,
+					const struct intel_pmic_opregion_data *d);
 
 #endif
diff --git a/drivers/acpi/pmic/intel_pmic_bxtwc.c b/drivers/acpi/pmic/intel_pmic_bxtwc.c
index bd7621edd60b..e247615189fa 100644
--- a/drivers/acpi/pmic/intel_pmic_bxtwc.c
+++ b/drivers/acpi/pmic/intel_pmic_bxtwc.c
@@ -369,13 +369,14 @@ intel_bxtwc_pmic_update_policy(struct regmap *regmap,
 	return regmap_update_bits(regmap, reg, mask, val);
 }
 
-static struct intel_pmic_opregion_data intel_bxtwc_pmic_opregion_data = {
+static const struct intel_pmic_opregion_data intel_bxtwc_pmic_opregion_data = {
 	.get_power      = intel_bxtwc_pmic_get_power,
 	.update_power   = intel_bxtwc_pmic_update_power,
 	.get_raw_temp   = intel_bxtwc_pmic_get_raw_temp,
 	.update_aux     = intel_bxtwc_pmic_update_aux,
 	.get_policy     = intel_bxtwc_pmic_get_policy,
 	.update_policy  = intel_bxtwc_pmic_update_policy,
+	.lpat_raw_to_temp = acpi_lpat_raw_to_temp,
 	.power_table      = power_table,
 	.power_table_count = ARRAY_SIZE(power_table),
 	.thermal_table     = thermal_table,
diff --git a/drivers/acpi/pmic/intel_pmic_bytcrc.c b/drivers/acpi/pmic/intel_pmic_bytcrc.c
index 2a692cc4b7ae..9ea79f210965 100644
--- a/drivers/acpi/pmic/intel_pmic_bytcrc.c
+++ b/drivers/acpi/pmic/intel_pmic_bytcrc.c
@@ -271,13 +271,14 @@ static int intel_crc_pmic_update_policy(struct regmap *regmap,
 	return 0;
 }
 
-static struct intel_pmic_opregion_data intel_crc_pmic_opregion_data = {
+static const struct intel_pmic_opregion_data intel_crc_pmic_opregion_data = {
 	.get_power	= intel_crc_pmic_get_power,
 	.update_power	= intel_crc_pmic_update_power,
 	.get_raw_temp	= intel_crc_pmic_get_raw_temp,
 	.update_aux	= intel_crc_pmic_update_aux,
 	.get_policy	= intel_crc_pmic_get_policy,
 	.update_policy	= intel_crc_pmic_update_policy,
+	.lpat_raw_to_temp = acpi_lpat_raw_to_temp,
 	.power_table	= power_table,
 	.power_table_count= ARRAY_SIZE(power_table),
 	.thermal_table	= thermal_table,
diff --git a/drivers/acpi/pmic/intel_pmic_chtcrc.c b/drivers/acpi/pmic/intel_pmic_chtcrc.c
index 2900dc3074d2..f9301c6f098e 100644
--- a/drivers/acpi/pmic/intel_pmic_chtcrc.c
+++ b/drivers/acpi/pmic/intel_pmic_chtcrc.c
@@ -23,7 +23,8 @@
  * intel_soc_pmic_exec_mipi_pmic_seq_element work on devices with a
  * CHT Crystal Cove PMIC.
  */
-static struct intel_pmic_opregion_data intel_chtcrc_pmic_opregion_data = {
+static const struct intel_pmic_opregion_data intel_chtcrc_pmic_opregion_data = {
+	.lpat_raw_to_temp = acpi_lpat_raw_to_temp,
 	.pmic_i2c_address = 0x6e,
 };
 
diff --git a/drivers/acpi/pmic/intel_pmic_chtdc_ti.c b/drivers/acpi/pmic/intel_pmic_chtdc_ti.c
index fef7831d0d63..418eec523025 100644
--- a/drivers/acpi/pmic/intel_pmic_chtdc_ti.c
+++ b/drivers/acpi/pmic/intel_pmic_chtdc_ti.c
@@ -94,10 +94,11 @@ static int chtdc_ti_pmic_get_raw_temp(struct regmap *regmap, int reg)
 	return ((buf[0] & 0x03) << 8) | buf[1];
 }
 
-static struct intel_pmic_opregion_data chtdc_ti_pmic_opregion_data = {
+static const struct intel_pmic_opregion_data chtdc_ti_pmic_opregion_data = {
 	.get_power = chtdc_ti_pmic_get_power,
 	.update_power = chtdc_ti_pmic_update_power,
 	.get_raw_temp = chtdc_ti_pmic_get_raw_temp,
+	.lpat_raw_to_temp = acpi_lpat_raw_to_temp,
 	.power_table = chtdc_ti_power_table,
 	.power_table_count = ARRAY_SIZE(chtdc_ti_power_table),
 	.thermal_table = chtdc_ti_thermal_table,
diff --git a/drivers/acpi/pmic/intel_pmic_chtwc.c b/drivers/acpi/pmic/intel_pmic_chtwc.c
index 7ffd5624b8e1..f2c42f4c79ca 100644
--- a/drivers/acpi/pmic/intel_pmic_chtwc.c
+++ b/drivers/acpi/pmic/intel_pmic_chtwc.c
@@ -253,10 +253,11 @@ static int intel_cht_wc_exec_mipi_pmic_seq_element(struct regmap *regmap,
  * The thermal table and ops are empty, we do not support the Thermal opregion
  * (DPTF) due to lacking documentation.
  */
-static struct intel_pmic_opregion_data intel_cht_wc_pmic_opregion_data = {
+static const struct intel_pmic_opregion_data intel_cht_wc_pmic_opregion_data = {
 	.get_power		= intel_cht_wc_pmic_get_power,
 	.update_power		= intel_cht_wc_pmic_update_power,
 	.exec_mipi_pmic_seq_element = intel_cht_wc_exec_mipi_pmic_seq_element,
+	.lpat_raw_to_temp	= acpi_lpat_raw_to_temp,
 	.power_table		= power_table,
 	.power_table_count	= ARRAY_SIZE(power_table),
 };
diff --git a/drivers/acpi/pmic/intel_pmic_xpower.c b/drivers/acpi/pmic/intel_pmic_xpower.c
index cbe08e600fa3..61bbe4c24d87 100644
--- a/drivers/acpi/pmic/intel_pmic_xpower.c
+++ b/drivers/acpi/pmic/intel_pmic_xpower.c
@@ -293,11 +293,33 @@ static int intel_xpower_exec_mipi_pmic_seq_element(struct regmap *regmap,
 	return ret;
 }
 
-static struct intel_pmic_opregion_data intel_xpower_pmic_opregion_data = {
+static int intel_xpower_lpat_raw_to_temp(struct acpi_lpat_conversion_table *lpat_table,
+					 int raw)
+{
+	struct acpi_lpat first = lpat_table->lpat[0];
+	struct acpi_lpat last = lpat_table->lpat[lpat_table->lpat_count - 1];
+
+	/*
+	 * Some LPAT tables in the ACPI Device for the AXP288 PMIC for some
+	 * reason only describe a small temperature range, e.g. 27° - 37°
+	 * Celcius. Resulting in errors when the tablet is idle in a cool room.
+	 *
+	 * To avoid these errors clamp the raw value to be inside the LPAT.
+	 */
+	if (first.raw < last.raw)
+		raw = clamp(raw, first.raw, last.raw);
+	else
+		raw = clamp(raw, last.raw, first.raw);
+
+	return acpi_lpat_raw_to_temp(lpat_table, raw);
+}
+
+static const struct intel_pmic_opregion_data intel_xpower_pmic_opregion_data = {
 	.get_power = intel_xpower_pmic_get_power,
 	.update_power = intel_xpower_pmic_update_power,
 	.get_raw_temp = intel_xpower_pmic_get_raw_temp,
 	.exec_mipi_pmic_seq_element = intel_xpower_exec_mipi_pmic_seq_element,
+	.lpat_raw_to_temp = intel_xpower_lpat_raw_to_temp,
 	.power_table = power_table,
 	.power_table_count = ARRAY_SIZE(power_table),
 	.thermal_table = thermal_table,
diff --git a/drivers/acpi/power.c b/drivers/acpi/power.c
index 5dcb02ededbc..8c4a73a1351e 100644
--- a/drivers/acpi/power.c
+++ b/drivers/acpi/power.c
@@ -81,9 +81,9 @@ struct acpi_power_resource *to_power_resource(struct acpi_device *device)
 
 static struct acpi_power_resource *acpi_power_get_context(acpi_handle handle)
 {
-	struct acpi_device *device;
+	struct acpi_device *device = acpi_fetch_acpi_dev(handle);
 
-	if (acpi_bus_get_device(handle, &device))
+	if (!device)
 		return NULL;
 
 	return to_power_resource(device);
@@ -716,6 +716,9 @@ int acpi_enable_wakeup_device_power(struct acpi_device *dev, int sleep_state)
 
 	mutex_lock(&acpi_device_lock);
 
+	dev_dbg(&dev->dev, "Enabling wakeup power (count %d)\n",
+		dev->wakeup.prepare_count);
+
 	if (dev->wakeup.prepare_count++)
 		goto out;
 
@@ -734,8 +737,11 @@ int acpi_enable_wakeup_device_power(struct acpi_device *dev, int sleep_state)
 	if (err) {
 		acpi_power_off_list(&dev->wakeup.resources);
 		dev->wakeup.prepare_count = 0;
+		goto out;
 	}
 
+	dev_dbg(&dev->dev, "Wakeup power enabled\n");
+
  out:
 	mutex_unlock(&acpi_device_lock);
 	return err;
@@ -757,6 +763,9 @@ int acpi_disable_wakeup_device_power(struct acpi_device *dev)
 
 	mutex_lock(&acpi_device_lock);
 
+	dev_dbg(&dev->dev, "Disabling wakeup power (count %d)\n",
+		dev->wakeup.prepare_count);
+
 	/* Do nothing if wakeup power has not been enabled for this device. */
 	if (dev->wakeup.prepare_count <= 0)
 		goto out;
@@ -782,8 +791,11 @@ int acpi_disable_wakeup_device_power(struct acpi_device *dev)
 	if (err) {
 		dev_err(&dev->dev, "Cannot turn off wakeup power resources\n");
 		dev->wakeup.flags.valid = 0;
+		goto out;
 	}
 
+	dev_dbg(&dev->dev, "Wakeup power disabled\n");
+
  out:
 	mutex_unlock(&acpi_device_lock);
 	return err;
@@ -916,15 +928,14 @@ static void acpi_power_add_resource_to_list(struct acpi_power_resource *resource
 
 struct acpi_device *acpi_add_power_resource(acpi_handle handle)
 {
+	struct acpi_device *device = acpi_fetch_acpi_dev(handle);
 	struct acpi_power_resource *resource;
-	struct acpi_device *device = NULL;
 	union acpi_object acpi_object;
 	struct acpi_buffer buffer = { sizeof(acpi_object), &acpi_object };
 	acpi_status status;
 	u8 state_dummy;
 	int result;
 
-	acpi_bus_get_device(handle, &device);
 	if (device)
 		return device;
 
diff --git a/drivers/acpi/processor_driver.c b/drivers/acpi/processor_driver.c
index 77541f939be3..368a9edefd0c 100644
--- a/drivers/acpi/processor_driver.c
+++ b/drivers/acpi/processor_driver.c
@@ -98,8 +98,13 @@ static int acpi_soft_cpu_online(unsigned int cpu)
 	struct acpi_processor *pr = per_cpu(processors, cpu);
 	struct acpi_device *device;
 
-	if (!pr || acpi_bus_get_device(pr->handle, &device))
+	if (!pr)
+		return 0;
+
+	device = acpi_fetch_acpi_dev(pr->handle);
+	if (!device)
 		return 0;
+
 	/*
 	 * CPU got physically hotplugged and onlined for the first time:
 	 * Initialize missing things.
@@ -125,9 +130,8 @@ static int acpi_soft_cpu_online(unsigned int cpu)
 static int acpi_soft_cpu_dead(unsigned int cpu)
 {
 	struct acpi_processor *pr = per_cpu(processors, cpu);
-	struct acpi_device *device;
 
-	if (!pr || acpi_bus_get_device(pr->handle, &device))
+	if (!pr || !acpi_fetch_acpi_dev(pr->handle))
 		return 0;
 
 	acpi_processor_reevaluate_tstate(pr, true);
diff --git a/drivers/acpi/processor_idle.c b/drivers/acpi/processor_idle.c
index 76ef1bcc8848..86560a28751b 100644
--- a/drivers/acpi/processor_idle.c
+++ b/drivers/acpi/processor_idle.c
@@ -20,6 +20,7 @@
 #include <linux/tick.h>
 #include <linux/cpuidle.h>
 #include <linux/cpu.h>
+#include <linux/minmax.h>
 #include <acpi/processor.h>
 
 /*
@@ -400,13 +401,10 @@ static int acpi_cst_latency_cmp(const void *a, const void *b)
 static void acpi_cst_latency_swap(void *a, void *b, int n)
 {
 	struct acpi_processor_cx *x = a, *y = b;
-	u32 tmp;
 
 	if (!(x->valid && y->valid))
 		return;
-	tmp = x->latency;
-	x->latency = y->latency;
-	y->latency = tmp;
+	swap(x->latency, y->latency);
 }
 
 static int acpi_processor_power_verify(struct acpi_processor *pr)
@@ -567,7 +565,8 @@ static int acpi_idle_play_dead(struct cpuidle_device *dev, int index)
 {
 	struct acpi_processor_cx *cx = per_cpu(acpi_cstate[index], dev->cpu);
 
-	ACPI_FLUSH_CPU_CACHE();
+	if (cx->type == ACPI_STATE_C3)
+		ACPI_FLUSH_CPU_CACHE();
 
 	while (1) {
 
@@ -1101,7 +1100,7 @@ static int acpi_processor_get_lpi_info(struct acpi_processor *pr)
 
 	status = acpi_get_parent(handle, &pr_ahandle);
 	while (ACPI_SUCCESS(status)) {
-		acpi_bus_get_device(pr_ahandle, &d);
+		d = acpi_fetch_acpi_dev(pr_ahandle);
 		handle = pr_ahandle;
 
 		if (strcmp(acpi_device_hid(d), ACPI_PROCESSOR_CONTAINER_HID))
diff --git a/drivers/acpi/processor_thermal.c b/drivers/acpi/processor_thermal.c
index a3d34e3f9f94..d8b2dfcd59b5 100644
--- a/drivers/acpi/processor_thermal.c
+++ b/drivers/acpi/processor_thermal.c
@@ -53,10 +53,17 @@ static int phys_package_first_cpu(int cpu)
 
 static int cpu_has_cpufreq(unsigned int cpu)
 {
-	struct cpufreq_policy policy;
-	if (!acpi_processor_cpufreq_init || cpufreq_get_policy(&policy, cpu))
+	struct cpufreq_policy *policy;
+
+	if (!acpi_processor_cpufreq_init)
 		return 0;
-	return 1;
+
+	policy = cpufreq_cpu_get(cpu);
+	if (policy) {
+		cpufreq_cpu_put(policy);
+		return 1;
+	}
+	return 0;
 }
 
 static int cpufreq_get_max_state(unsigned int cpu)
diff --git a/drivers/acpi/property.c b/drivers/acpi/property.c
index 2366f54d8e9c..d0986bda2964 100644
--- a/drivers/acpi/property.c
+++ b/drivers/acpi/property.c
@@ -687,9 +687,9 @@ int __acpi_node_get_property_reference(const struct fwnode_handle *fwnode,
 		if (index)
 			return -EINVAL;
 
-		ret = acpi_bus_get_device(obj->reference.handle, &device);
-		if (ret)
-			return ret == -ENODEV ? -EINVAL : ret;
+		device = acpi_fetch_acpi_dev(obj->reference.handle);
+		if (!device)
+			return -EINVAL;
 
 		args->fwnode = acpi_fwnode_handle(device);
 		args->nargs = 0;
@@ -719,9 +719,8 @@ int __acpi_node_get_property_reference(const struct fwnode_handle *fwnode,
 		if (element->type == ACPI_TYPE_LOCAL_REFERENCE) {
 			struct fwnode_handle *ref_fwnode;
 
-			ret = acpi_bus_get_device(element->reference.handle,
-						  &device);
-			if (ret)
+			device = acpi_fetch_acpi_dev(element->reference.handle);
+			if (!device)
 				return -EINVAL;
 
 			nargs = 0;
diff --git a/drivers/acpi/resource.c b/drivers/acpi/resource.c
index 3c25ce8c95ba..c2d494784425 100644
--- a/drivers/acpi/resource.c
+++ b/drivers/acpi/resource.c
@@ -791,9 +791,9 @@ static acpi_status acpi_res_consumer_cb(acpi_handle handle, u32 depth,
 {
 	struct resource *res = context;
 	struct acpi_device **consumer = (struct acpi_device **) ret;
-	struct acpi_device *adev;
+	struct acpi_device *adev = acpi_fetch_acpi_dev(handle);
 
-	if (acpi_bus_get_device(handle, &adev))
+	if (!adev)
 		return AE_OK;
 
 	if (acpi_dev_consumes_res(adev, res)) {
diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c
index 89c4ae6ef3ec..1185ecea59d1 100644
--- a/drivers/acpi/scan.c
+++ b/drivers/acpi/scan.c
@@ -135,12 +135,12 @@ bool acpi_scan_is_offline(struct acpi_device *adev, bool uevent)
 static acpi_status acpi_bus_offline(acpi_handle handle, u32 lvl, void *data,
 				    void **ret_p)
 {
-	struct acpi_device *device = NULL;
+	struct acpi_device *device = acpi_fetch_acpi_dev(handle);
 	struct acpi_device_physical_node *pn;
 	bool second_pass = (bool)data;
 	acpi_status status = AE_OK;
 
-	if (acpi_bus_get_device(handle, &device))
+	if (!device)
 		return AE_OK;
 
 	if (device->handler && !device->handler->hotplug.enabled) {
@@ -180,10 +180,10 @@ static acpi_status acpi_bus_offline(acpi_handle handle, u32 lvl, void *data,
 static acpi_status acpi_bus_online(acpi_handle handle, u32 lvl, void *data,
 				   void **ret_p)
 {
-	struct acpi_device *device = NULL;
+	struct acpi_device *device = acpi_fetch_acpi_dev(handle);
 	struct acpi_device_physical_node *pn;
 
-	if (acpi_bus_get_device(handle, &device))
+	if (!device)
 		return AE_OK;
 
 	mutex_lock(&device->physical_node_lock);
@@ -599,6 +599,19 @@ int acpi_bus_get_device(acpi_handle handle, struct acpi_device **device)
 }
 EXPORT_SYMBOL(acpi_bus_get_device);
 
+/**
+ * acpi_fetch_acpi_dev - Retrieve ACPI device object.
+ * @handle: ACPI handle associated with the requested ACPI device object.
+ *
+ * Return a pointer to the ACPI device object associated with @handle, if
+ * present, or NULL otherwise.
+ */
+struct acpi_device *acpi_fetch_acpi_dev(acpi_handle handle)
+{
+	return handle_to_device(handle, NULL);
+}
+EXPORT_SYMBOL_GPL(acpi_fetch_acpi_dev);
+
 static void get_acpi_device(void *dev)
 {
 	acpi_dev_get(dev);
@@ -805,7 +818,7 @@ static const char * const acpi_honor_dep_ids[] = {
 
 static struct acpi_device *acpi_bus_get_parent(acpi_handle handle)
 {
-	struct acpi_device *device = NULL;
+	struct acpi_device *device;
 	acpi_status status;
 
 	/*
@@ -820,7 +833,9 @@ static struct acpi_device *acpi_bus_get_parent(acpi_handle handle)
 		status = acpi_get_parent(handle, &handle);
 		if (ACPI_FAILURE(status))
 			return status == AE_NULL_ENTRY ? NULL : acpi_root;
-	} while (acpi_bus_get_device(handle, &device));
+
+		device = acpi_fetch_acpi_dev(handle);
+	} while (!device);
 	return device;
 }
 
@@ -1346,11 +1361,11 @@ static void acpi_set_pnp_ids(acpi_handle handle, struct acpi_device_pnp *pnp,
 		if (info->valid & ACPI_VALID_HID) {
 			acpi_add_id(pnp, info->hardware_id.string);
 			pnp->type.platform_id = 1;
-		}
-		if (info->valid & ACPI_VALID_CID) {
-			cid_list = &info->compatible_id_list;
-			for (i = 0; i < cid_list->count; i++)
-				acpi_add_id(pnp, cid_list->ids[i].string);
+			if (info->valid & ACPI_VALID_CID) {
+				cid_list = &info->compatible_id_list;
+				for (i = 0; i < cid_list->count; i++)
+					acpi_add_id(pnp, cid_list->ids[i].string);
+			}
 		}
 		if (info->valid & ACPI_VALID_ADR) {
 			pnp->bus_address = info->address;
@@ -1701,6 +1716,7 @@ static bool acpi_device_enumeration_by_parent(struct acpi_device *device)
 {
 	struct list_head resource_list;
 	bool is_serial_bus_slave = false;
+	static const struct acpi_device_id ignore_serial_bus_ids[] = {
 	/*
 	 * These devices have multiple I2cSerialBus resources and an i2c-client
 	 * must be instantiated for each, each with its own i2c_device_id.
@@ -1709,11 +1725,18 @@ static bool acpi_device_enumeration_by_parent(struct acpi_device *device)
 	 * drivers/platform/x86/i2c-multi-instantiate.c driver, which knows
 	 * which i2c_device_id to use for each resource.
 	 */
-	static const struct acpi_device_id i2c_multi_instantiate_ids[] = {
 		{"BSG1160", },
 		{"BSG2150", },
 		{"INT33FE", },
 		{"INT3515", },
+	/*
+	 * HIDs of device with an UartSerialBusV2 resource for which userspace
+	 * expects a regular tty cdev to be created (instead of the in kernel
+	 * serdev) and which have a kernel driver which expects a platform_dev
+	 * such as the rfkill-gpio driver.
+	 */
+		{"BCM4752", },
+		{"LNV4752", },
 		{}
 	};
 
@@ -1727,8 +1750,7 @@ static bool acpi_device_enumeration_by_parent(struct acpi_device *device)
 	     fwnode_property_present(&device->fwnode, "baud")))
 		return true;
 
-	/* Instantiate a pdev for the i2c-multi-instantiate drv to bind to */
-	if (!acpi_match_device_ids(device, i2c_multi_instantiate_ids))
+	if (!acpi_match_device_ids(device, ignore_serial_bus_ids))
 		return false;
 
 	INIT_LIST_HEAD(&resource_list);
@@ -2015,11 +2037,10 @@ static bool acpi_bus_scan_second_pass;
 static acpi_status acpi_bus_check_add(acpi_handle handle, bool check_dep,
 				      struct acpi_device **adev_p)
 {
-	struct acpi_device *device = NULL;
+	struct acpi_device *device = acpi_fetch_acpi_dev(handle);
 	acpi_object_type acpi_type;
 	int type;
 
-	acpi_bus_get_device(handle, &device);
 	if (device)
 		goto out;
 
@@ -2577,8 +2598,8 @@ int __init acpi_scan_init(void)
 	if (result)
 		goto out;
 
-	result = acpi_bus_get_device(ACPI_ROOT_OBJECT, &acpi_root);
-	if (result)
+	acpi_root = acpi_fetch_acpi_dev(ACPI_ROOT_OBJECT);
+	if (!acpi_root)
 		goto out;
 
 	/* Fixed feature devices do not exist on HW-reduced platform */
diff --git a/drivers/acpi/sleep.c b/drivers/acpi/sleep.c
index eaa47753b758..4b8454f26ca1 100644
--- a/drivers/acpi/sleep.c
+++ b/drivers/acpi/sleep.c
@@ -73,7 +73,6 @@ static int acpi_sleep_prepare(u32 acpi_state)
 		acpi_set_waking_vector(acpi_wakeup_address);
 
 	}
-	ACPI_FLUSH_CPU_CACHE();
 #endif
 	pr_info("Preparing to enter system sleep state S%d\n", acpi_state);
 	acpi_enable_wakeup_devices(acpi_state);
@@ -566,8 +565,6 @@ static int acpi_suspend_enter(suspend_state_t pm_state)
 	u32 acpi_state = acpi_target_sleep_state;
 	int error;
 
-	ACPI_FLUSH_CPU_CACHE();
-
 	trace_suspend_resume(TPS("acpi_suspend"), acpi_state, true);
 	switch (acpi_state) {
 	case ACPI_STATE_S1:
@@ -903,8 +900,6 @@ static int acpi_hibernation_enter(void)
 {
 	acpi_status status = AE_OK;
 
-	ACPI_FLUSH_CPU_CACHE();
-
 	/* This shouldn't return.  If it returns, we have a problem */
 	status = acpi_enter_sleep_state(ACPI_STATE_S4);
 	/* Reprogram control registers */
diff --git a/drivers/acpi/sysfs.c b/drivers/acpi/sysfs.c
index 00c0ebaab29f..a4b638bea6f1 100644
--- a/drivers/acpi/sysfs.c
+++ b/drivers/acpi/sysfs.c
@@ -939,10 +939,11 @@ static struct attribute *hotplug_profile_attrs[] = {
 	&hotplug_enabled_attr.attr,
 	NULL
 };
+ATTRIBUTE_GROUPS(hotplug_profile);
 
 static struct kobj_type acpi_hotplug_profile_ktype = {
 	.sysfs_ops = &kobj_sysfs_ops,
-	.default_attrs = hotplug_profile_attrs,
+	.default_groups = hotplug_profile_groups,
 };
 
 void acpi_sysfs_add_hotplug_profile(struct acpi_hotplug_profile *hotplug,
diff --git a/drivers/acpi/tables.c b/drivers/acpi/tables.c
index 71419eb16e09..682a3ea9cb40 100644
--- a/drivers/acpi/tables.c
+++ b/drivers/acpi/tables.c
@@ -500,7 +500,7 @@ static const char table_sigs[][ACPI_NAMESEG_SIZE] __initconst = {
 	ACPI_SIG_WDDT, ACPI_SIG_WDRT, ACPI_SIG_DSDT, ACPI_SIG_FADT,
 	ACPI_SIG_PSDT, ACPI_SIG_RSDT, ACPI_SIG_XSDT, ACPI_SIG_SSDT,
 	ACPI_SIG_IORT, ACPI_SIG_NFIT, ACPI_SIG_HMAT, ACPI_SIG_PPTT,
-	ACPI_SIG_NHLT };
+	ACPI_SIG_NHLT, ACPI_SIG_AEST };
 
 #define ACPI_HEADER_SIZE sizeof(struct acpi_table_header)
 
@@ -723,7 +723,7 @@ static void __init acpi_table_initrd_scan(void)
 		/*
 		 * Mark the table to avoid being used in
 		 * acpi_table_initrd_override(). Though this is not possible
-		 * because override is disabled in acpi_install_table().
+		 * because override is disabled in acpi_install_physical_table().
 		 */
 		if (test_and_set_bit(table_index, acpi_initrd_installed)) {
 			acpi_os_unmap_memory(table, ACPI_HEADER_SIZE);
@@ -734,7 +734,7 @@ static void __init acpi_table_initrd_scan(void)
 			table->signature, table->oem_id,
 			table->oem_table_id);
 		acpi_os_unmap_memory(table, ACPI_HEADER_SIZE);
-		acpi_install_table(acpi_tables_addr + table_offset, TRUE);
+		acpi_install_physical_table(acpi_tables_addr + table_offset);
 next_table:
 		table_offset += table_length;
 		table_index++;
diff --git a/drivers/acpi/thermal.c b/drivers/acpi/thermal.c
index 95105db642b9..539660ef93c7 100644
--- a/drivers/acpi/thermal.c
+++ b/drivers/acpi/thermal.c
@@ -697,7 +697,6 @@ static int acpi_thermal_cooling_device_cb(struct thermal_zone_device *thermal,
 	struct acpi_device *device = cdev->devdata;
 	struct acpi_thermal *tz = thermal->devdata;
 	struct acpi_device *dev;
-	acpi_status status;
 	acpi_handle handle;
 	int i;
 	int j;
@@ -715,8 +714,8 @@ static int acpi_thermal_cooling_device_cb(struct thermal_zone_device *thermal,
 		for (i = 0; i < tz->trips.passive.devices.count;
 		    i++) {
 			handle = tz->trips.passive.devices.handles[i];
-			status = acpi_bus_get_device(handle, &dev);
-			if (ACPI_FAILURE(status) || dev != device)
+			dev = acpi_fetch_acpi_dev(handle);
+			if (dev != device)
 				continue;
 			if (bind)
 				result =
@@ -741,8 +740,8 @@ static int acpi_thermal_cooling_device_cb(struct thermal_zone_device *thermal,
 		    j < tz->trips.active[i].devices.count;
 		    j++) {
 			handle = tz->trips.active[i].devices.handles[j];
-			status = acpi_bus_get_device(handle, &dev);
-			if (ACPI_FAILURE(status) || dev != device)
+			dev = acpi_fetch_acpi_dev(handle);
+			if (dev != device)
 				continue;
 			if (bind)
 				result = thermal_zone_bind_cooling_device
@@ -1098,8 +1097,6 @@ static int acpi_thermal_resume(struct device *dev)
 		return -EINVAL;
 
 	for (i = 0; i < ACPI_THERMAL_MAX_ACTIVE; i++) {
-		if (!(&tz->trips.active[i]))
-			break;
 		if (!tz->trips.active[i].flags.valid)
 			break;
 		tz->trips.active[i].flags.enabled = 1;
diff --git a/drivers/acpi/video_detect.c b/drivers/acpi/video_detect.c
index 068e393ea0c6..4f64713e9917 100644
--- a/drivers/acpi/video_detect.c
+++ b/drivers/acpi/video_detect.c
@@ -59,18 +59,16 @@ static void acpi_video_parse_cmdline(void)
 static acpi_status
 find_video(acpi_handle handle, u32 lvl, void *context, void **rv)
 {
+	struct acpi_device *acpi_dev = acpi_fetch_acpi_dev(handle);
 	long *cap = context;
 	struct pci_dev *dev;
-	struct acpi_device *acpi_dev;
 
 	static const struct acpi_device_id video_ids[] = {
 		{ACPI_VIDEO_HID, 0},
 		{"", 0},
 	};
-	if (acpi_bus_get_device(handle, &acpi_dev))
-		return AE_OK;
 
-	if (!acpi_match_device_ids(acpi_dev, video_ids)) {
+	if (acpi_dev && !acpi_match_device_ids(acpi_dev, video_ids)) {
 		dev = acpi_get_pci_dev(handle);
 		if (!dev)
 			return AE_OK;
diff --git a/drivers/acpi/x86/s2idle.c b/drivers/acpi/x86/s2idle.c
index 1c48358b43ba..abc06e7f89d8 100644
--- a/drivers/acpi/x86/s2idle.c
+++ b/drivers/acpi/x86/s2idle.c
@@ -293,9 +293,9 @@ static void lpi_check_constraints(void)
 
 	for (i = 0; i < lpi_constraints_table_size; ++i) {
 		acpi_handle handle = lpi_constraints_table[i].handle;
-		struct acpi_device *adev;
+		struct acpi_device *adev = acpi_fetch_acpi_dev(handle);
 
-		if (!handle || acpi_bus_get_device(handle, &adev))
+		if (!adev)
 			continue;
 
 		acpi_handle_debug(handle,
diff --git a/drivers/acpi/x86/utils.c b/drivers/acpi/x86/utils.c
index f22f23933063..ffdeed5334d6 100644
--- a/drivers/acpi/x86/utils.c
+++ b/drivers/acpi/x86/utils.c
@@ -8,8 +8,11 @@
  * Copyright (C) 2013-2015 Intel Corporation. All rights reserved.
  */
 
+#define pr_fmt(fmt) "ACPI: " fmt
+
 #include <linux/acpi.h>
 #include <linux/dmi.h>
+#include <linux/platform_device.h>
 #include <asm/cpu_device_id.h>
 #include <asm/intel-family.h>
 #include "../internal.h"
@@ -22,58 +25,77 @@
  * Some BIOS-es (temporarily) hide specific APCI devices to work around Windows
  * driver bugs. We use DMI matching to match known cases of this.
  *
- * We work around this by always reporting ACPI_STA_DEFAULT for these
- * devices. Note this MUST only be done for devices where this is safe.
+ * Likewise sometimes some not-actually present devices are sometimes
+ * reported as present, which may cause issues.
+ *
+ * We work around this by using the below quirk list to override the status
+ * reported by the _STA method with a fixed value (ACPI_STA_DEFAULT or 0).
+ * Note this MUST only be done for devices where this is safe.
  *
- * This forcing of devices to be present is limited to specific CPU (SoC)
- * models both to avoid potentially causing trouble on other models and
- * because some HIDs are re-used on different SoCs for completely
- * different devices.
+ * This status overriding is limited to specific CPU (SoC) models both to
+ * avoid potentially causing trouble on other models and because some HIDs
+ * are re-used on different SoCs for completely different devices.
  */
-struct always_present_id {
+struct override_status_id {
 	struct acpi_device_id hid[2];
 	struct x86_cpu_id cpu_ids[2];
 	struct dmi_system_id dmi_ids[2]; /* Optional */
 	const char *uid;
+	const char *path;
+	unsigned long long status;
 };
 
-#define X86_MATCH(model)	X86_MATCH_INTEL_FAM6_MODEL(model, NULL)
-
-#define ENTRY(hid, uid, cpu_models, dmi...) {				\
+#define ENTRY(status, hid, uid, path, cpu_model, dmi...) {		\
 	{ { hid, }, {} },						\
-	{ cpu_models, {} },						\
+	{ X86_MATCH_INTEL_FAM6_MODEL(cpu_model, NULL), {} },		\
 	{ { .matches = dmi }, {} },					\
 	uid,								\
+	path,								\
+	status,								\
 }
 
-static const struct always_present_id always_present_ids[] = {
+#define PRESENT_ENTRY_HID(hid, uid, cpu_model, dmi...) \
+	ENTRY(ACPI_STA_DEFAULT, hid, uid, NULL, cpu_model, dmi)
+
+#define NOT_PRESENT_ENTRY_HID(hid, uid, cpu_model, dmi...) \
+	ENTRY(0, hid, uid, NULL, cpu_model, dmi)
+
+#define PRESENT_ENTRY_PATH(path, cpu_model, dmi...) \
+	ENTRY(ACPI_STA_DEFAULT, "", NULL, path, cpu_model, dmi)
+
+#define NOT_PRESENT_ENTRY_PATH(path, cpu_model, dmi...) \
+	ENTRY(0, "", NULL, path, cpu_model, dmi)
+
+static const struct override_status_id override_status_ids[] = {
 	/*
 	 * Bay / Cherry Trail PWM directly poked by GPU driver in win10,
 	 * but Linux uses a separate PWM driver, harmless if not used.
 	 */
-	ENTRY("80860F09", "1", X86_MATCH(ATOM_SILVERMONT), {}),
-	ENTRY("80862288", "1", X86_MATCH(ATOM_AIRMONT), {}),
+	PRESENT_ENTRY_HID("80860F09", "1", ATOM_SILVERMONT, {}),
+	PRESENT_ENTRY_HID("80862288", "1", ATOM_AIRMONT, {}),
+
+	/* The Xiaomi Mi Pad 2 uses PWM2 for touchkeys backlight control */
+	PRESENT_ENTRY_HID("80862289", "2", ATOM_AIRMONT, {
+		DMI_MATCH(DMI_SYS_VENDOR, "Xiaomi Inc"),
+		DMI_MATCH(DMI_PRODUCT_NAME, "Mipad2"),
+	      }),
 
-	/* Lenovo Yoga Book uses PWM2 for keyboard backlight control */
-	ENTRY("80862289", "2", X86_MATCH(ATOM_AIRMONT), {
-			DMI_MATCH(DMI_PRODUCT_NAME, "Lenovo YB1-X9"),
-		}),
 	/*
 	 * The INT0002 device is necessary to clear wakeup interrupt sources
 	 * on Cherry Trail devices, without it we get nobody cared IRQ msgs.
 	 */
-	ENTRY("INT0002", "1", X86_MATCH(ATOM_AIRMONT), {}),
+	PRESENT_ENTRY_HID("INT0002", "1", ATOM_AIRMONT, {}),
 	/*
 	 * On the Dell Venue 11 Pro 7130 and 7139, the DSDT hides
 	 * the touchscreen ACPI device until a certain time
 	 * after _SB.PCI0.GFX0.LCD.LCD1._ON gets called has passed
 	 * *and* _STA has been called at least 3 times since.
 	 */
-	ENTRY("SYNA7500", "1", X86_MATCH(HASWELL_L), {
+	PRESENT_ENTRY_HID("SYNA7500", "1", HASWELL_L, {
 		DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
 		DMI_MATCH(DMI_PRODUCT_NAME, "Venue 11 Pro 7130"),
 	      }),
-	ENTRY("SYNA7500", "1", X86_MATCH(HASWELL_L), {
+	PRESENT_ENTRY_HID("SYNA7500", "1", HASWELL_L, {
 		DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
 		DMI_MATCH(DMI_PRODUCT_NAME, "Venue 11 Pro 7139"),
 	      }),
@@ -81,54 +103,83 @@ static const struct always_present_id always_present_ids[] = {
 	/*
 	 * The GPD win BIOS dated 20170221 has disabled the accelerometer, the
 	 * drivers sometimes cause crashes under Windows and this is how the
-	 * manufacturer has solved this :| Note that the the DMI data is less
-	 * generic then it seems, a board_vendor of "AMI Corporation" is quite
-	 * rare and a board_name of "Default String" also is rare.
+	 * manufacturer has solved this :|  The DMI match may not seem unique,
+	 * but it is. In the 67000+ DMI decode dumps from linux-hardware.org
+	 * only 116 have board_vendor set to "AMI Corporation" and of those 116
+	 * only the GPD win and pocket entries' board_name is "Default string".
 	 *
 	 * Unfortunately the GPD pocket also uses these strings and its BIOS
 	 * was copy-pasted from the GPD win, so it has a disabled KIOX000A
 	 * node which we should not enable, thus we also check the BIOS date.
 	 */
-	ENTRY("KIOX000A", "1", X86_MATCH(ATOM_AIRMONT), {
+	PRESENT_ENTRY_HID("KIOX000A", "1", ATOM_AIRMONT, {
 		DMI_MATCH(DMI_BOARD_VENDOR, "AMI Corporation"),
 		DMI_MATCH(DMI_BOARD_NAME, "Default string"),
 		DMI_MATCH(DMI_PRODUCT_NAME, "Default string"),
 		DMI_MATCH(DMI_BIOS_DATE, "02/21/2017")
 	      }),
-	ENTRY("KIOX000A", "1", X86_MATCH(ATOM_AIRMONT), {
+	PRESENT_ENTRY_HID("KIOX000A", "1", ATOM_AIRMONT, {
 		DMI_MATCH(DMI_BOARD_VENDOR, "AMI Corporation"),
 		DMI_MATCH(DMI_BOARD_NAME, "Default string"),
 		DMI_MATCH(DMI_PRODUCT_NAME, "Default string"),
 		DMI_MATCH(DMI_BIOS_DATE, "03/20/2017")
 	      }),
-	ENTRY("KIOX000A", "1", X86_MATCH(ATOM_AIRMONT), {
+	PRESENT_ENTRY_HID("KIOX000A", "1", ATOM_AIRMONT, {
 		DMI_MATCH(DMI_BOARD_VENDOR, "AMI Corporation"),
 		DMI_MATCH(DMI_BOARD_NAME, "Default string"),
 		DMI_MATCH(DMI_PRODUCT_NAME, "Default string"),
 		DMI_MATCH(DMI_BIOS_DATE, "05/25/2017")
 	      }),
+
+	/*
+	 * The GPD win/pocket have a PCI wifi card, but its DSDT has the SDIO
+	 * mmc controller enabled and that has a child-device which _PS3
+	 * method sets a GPIO causing the PCI wifi card to turn off.
+	 * See above remark about uniqueness of the DMI match.
+	 */
+	NOT_PRESENT_ENTRY_PATH("\\_SB_.PCI0.SDHB.BRC1", ATOM_AIRMONT, {
+		DMI_EXACT_MATCH(DMI_BOARD_VENDOR, "AMI Corporation"),
+		DMI_EXACT_MATCH(DMI_BOARD_NAME, "Default string"),
+		DMI_EXACT_MATCH(DMI_BOARD_SERIAL, "Default string"),
+		DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Default string"),
+	      }),
 };
 
-bool acpi_device_always_present(struct acpi_device *adev)
+bool acpi_device_override_status(struct acpi_device *adev, unsigned long long *status)
 {
 	bool ret = false;
 	unsigned int i;
 
-	for (i = 0; i < ARRAY_SIZE(always_present_ids); i++) {
-		if (acpi_match_device_ids(adev, always_present_ids[i].hid))
+	for (i = 0; i < ARRAY_SIZE(override_status_ids); i++) {
+		if (!x86_match_cpu(override_status_ids[i].cpu_ids))
 			continue;
 
-		if (!adev->pnp.unique_id ||
-		    strcmp(adev->pnp.unique_id, always_present_ids[i].uid))
+		if (override_status_ids[i].dmi_ids[0].matches[0].slot &&
+		    !dmi_check_system(override_status_ids[i].dmi_ids))
 			continue;
 
-		if (!x86_match_cpu(always_present_ids[i].cpu_ids))
-			continue;
+		if (override_status_ids[i].path) {
+			struct acpi_buffer path = { ACPI_ALLOCATE_BUFFER, NULL };
+			bool match;
 
-		if (always_present_ids[i].dmi_ids[0].matches[0].slot &&
-		    !dmi_check_system(always_present_ids[i].dmi_ids))
-			continue;
+			if (acpi_get_name(adev->handle, ACPI_FULL_PATHNAME, &path))
+				continue;
+
+			match = strcmp((char *)path.pointer, override_status_ids[i].path) == 0;
+			kfree(path.pointer);
 
+			if (!match)
+				continue;
+		} else {
+			if (acpi_match_device_ids(adev, override_status_ids[i].hid))
+				continue;
+
+			if (!adev->pnp.unique_id ||
+			    strcmp(adev->pnp.unique_id, override_status_ids[i].uid))
+				continue;
+		}
+
+		*status = override_status_ids[i].status;
 		ret = true;
 		break;
 	}
@@ -160,3 +211,183 @@ bool force_storage_d3(void)
 {
 	return x86_match_cpu(storage_d3_cpu_ids);
 }
+
+/*
+ * x86 ACPI boards which ship with only Android as their factory image usually
+ * declare a whole bunch of bogus I2C devices in their ACPI tables and sometimes
+ * there are issues with serdev devices on these boards too, e.g. the resource
+ * points to the wrong serdev_controller.
+ *
+ * Instantiating I2C / serdev devs for these bogus devs causes various issues,
+ * e.g. GPIO/IRQ resource conflicts because sometimes drivers do bind to them.
+ * The Android x86 kernel fork shipped on these devices has some special code
+ * to remove the bogus I2C clients (and AFAICT serdevs are ignored completely).
+ *
+ * The acpi_quirk_skip_*_enumeration() functions below are used by the I2C or
+ * serdev code to skip instantiating any I2C or serdev devs on broken boards.
+ *
+ * In case of I2C an exception is made for HIDs on the i2c_acpi_known_good_ids
+ * list. These are known to always be correct (and in case of the audio-codecs
+ * the drivers heavily rely on the codec being enumerated through ACPI).
+ *
+ * Note these boards typically do actually have I2C and serdev devices,
+ * just different ones then the ones described in their DSDT. The devices
+ * which are actually present are manually instantiated by the
+ * drivers/platform/x86/x86-android-tablets.c kernel module.
+ */
+#define ACPI_QUIRK_SKIP_I2C_CLIENTS				BIT(0)
+#define ACPI_QUIRK_UART1_TTY_UART2_SKIP				BIT(1)
+#define ACPI_QUIRK_SKIP_ACPI_AC_AND_BATTERY			BIT(2)
+#define ACPI_QUIRK_USE_ACPI_AC_AND_BATTERY			BIT(3)
+
+static const struct dmi_system_id acpi_quirk_skip_dmi_ids[] = {
+	/*
+	 * 1. Devices with only the skip / don't-skip AC and battery quirks,
+	 *    sorted alphabetically.
+	 */
+	{
+		/* ECS EF20EA, AXP288 PMIC but uses separate fuel-gauge */
+		.matches = {
+			DMI_MATCH(DMI_PRODUCT_NAME, "EF20EA"),
+		},
+		.driver_data = (void *)ACPI_QUIRK_USE_ACPI_AC_AND_BATTERY
+	},
+	{
+		/* Lenovo Ideapad Miix 320, AXP288 PMIC, separate fuel-gauge */
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "80XF"),
+			DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo MIIX 320-10ICR"),
+		},
+		.driver_data = (void *)ACPI_QUIRK_USE_ACPI_AC_AND_BATTERY
+	},
+
+	/*
+	 * 2. Devices which also have the skip i2c/serdev quirks and which
+	 *    need the x86-android-tablets module to properly work.
+	 */
+#if IS_ENABLED(CONFIG_X86_ANDROID_TABLETS)
+	{
+		.matches = {
+			DMI_EXACT_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
+			DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "ME176C"),
+		},
+		.driver_data = (void *)(ACPI_QUIRK_SKIP_I2C_CLIENTS |
+					ACPI_QUIRK_UART1_TTY_UART2_SKIP |
+					ACPI_QUIRK_SKIP_ACPI_AC_AND_BATTERY),
+	},
+	{
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
+			DMI_MATCH(DMI_PRODUCT_NAME, "TF103C"),
+		},
+		.driver_data = (void *)(ACPI_QUIRK_SKIP_I2C_CLIENTS |
+					ACPI_QUIRK_SKIP_ACPI_AC_AND_BATTERY),
+	},
+	{
+		/* Whitelabel (sold as various brands) TM800A550L */
+		.matches = {
+			DMI_MATCH(DMI_BOARD_VENDOR, "AMI Corporation"),
+			DMI_MATCH(DMI_BOARD_NAME, "Aptio CRB"),
+			/* Above strings are too generic, also match on BIOS version */
+			DMI_MATCH(DMI_BIOS_VERSION, "ZY-8-BI-PX4S70VTR400-X423B-005-D"),
+		},
+		.driver_data = (void *)(ACPI_QUIRK_SKIP_I2C_CLIENTS |
+					ACPI_QUIRK_SKIP_ACPI_AC_AND_BATTERY),
+	},
+#endif
+	{}
+};
+
+#if IS_ENABLED(CONFIG_X86_ANDROID_TABLETS)
+static const struct acpi_device_id i2c_acpi_known_good_ids[] = {
+	{ "10EC5640", 0 }, /* RealTek ALC5640 audio codec */
+	{ "INT33F4", 0 },  /* X-Powers AXP288 PMIC */
+	{ "INT33FD", 0 },  /* Intel Crystal Cove PMIC */
+	{ "NPCE69A", 0 },  /* Asus Transformer keyboard dock */
+	{}
+};
+
+bool acpi_quirk_skip_i2c_client_enumeration(struct acpi_device *adev)
+{
+	const struct dmi_system_id *dmi_id;
+	long quirks;
+
+	dmi_id = dmi_first_match(acpi_quirk_skip_dmi_ids);
+	if (!dmi_id)
+		return false;
+
+	quirks = (unsigned long)dmi_id->driver_data;
+	if (!(quirks & ACPI_QUIRK_SKIP_I2C_CLIENTS))
+		return false;
+
+	return acpi_match_device_ids(adev, i2c_acpi_known_good_ids);
+}
+EXPORT_SYMBOL_GPL(acpi_quirk_skip_i2c_client_enumeration);
+
+int acpi_quirk_skip_serdev_enumeration(struct device *controller_parent, bool *skip)
+{
+	struct acpi_device *adev = ACPI_COMPANION(controller_parent);
+	const struct dmi_system_id *dmi_id;
+	long quirks = 0;
+
+	*skip = false;
+
+	/* !dev_is_platform() to not match on PNP enumerated debug UARTs */
+	if (!adev || !adev->pnp.unique_id || !dev_is_platform(controller_parent))
+		return 0;
+
+	dmi_id = dmi_first_match(acpi_quirk_skip_dmi_ids);
+	if (dmi_id)
+		quirks = (unsigned long)dmi_id->driver_data;
+
+	if (quirks & ACPI_QUIRK_UART1_TTY_UART2_SKIP) {
+		if (!strcmp(adev->pnp.unique_id, "1"))
+			return -ENODEV; /* Create tty cdev instead of serdev */
+
+		if (!strcmp(adev->pnp.unique_id, "2"))
+			*skip = true;
+	}
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(acpi_quirk_skip_serdev_enumeration);
+#endif
+
+/* Lists of PMIC ACPI HIDs with an (often better) native charger driver */
+static const struct {
+	const char *hid;
+	int hrv;
+} acpi_skip_ac_and_battery_pmic_ids[] = {
+	{ "INT33F4", -1 }, /* X-Powers AXP288 PMIC */
+	{ "INT34D3",  3 }, /* Intel Cherrytrail Whiskey Cove PMIC */
+};
+
+bool acpi_quirk_skip_acpi_ac_and_battery(void)
+{
+	const struct dmi_system_id *dmi_id;
+	long quirks = 0;
+	int i;
+
+	dmi_id = dmi_first_match(acpi_quirk_skip_dmi_ids);
+	if (dmi_id)
+		quirks = (unsigned long)dmi_id->driver_data;
+
+	if (quirks & ACPI_QUIRK_SKIP_ACPI_AC_AND_BATTERY)
+		return true;
+
+	if (quirks & ACPI_QUIRK_USE_ACPI_AC_AND_BATTERY)
+		return false;
+
+	for (i = 0; i < ARRAY_SIZE(acpi_skip_ac_and_battery_pmic_ids); i++) {
+		if (acpi_dev_present(acpi_skip_ac_and_battery_pmic_ids[i].hid, "1",
+				     acpi_skip_ac_and_battery_pmic_ids[i].hrv)) {
+			pr_info_once("found native %s PMIC, skipping ACPI AC and battery devices\n",
+				     acpi_skip_ac_and_battery_pmic_ids[i].hid);
+			return true;
+		}
+	}
+
+	return false;
+}
+EXPORT_SYMBOL_GPL(acpi_quirk_skip_acpi_ac_and_battery);
diff --git a/drivers/i2c/i2c-core-acpi.c b/drivers/i2c/i2c-core-acpi.c
index c87ce2276007..85ed4c1d4924 100644
--- a/drivers/i2c/i2c-core-acpi.c
+++ b/drivers/i2c/i2c-core-acpi.c
@@ -257,6 +257,13 @@ static void i2c_acpi_register_device(struct i2c_adapter *adapter,
 				     struct acpi_device *adev,
 				     struct i2c_board_info *info)
 {
+	/*
+	 * Skip registration on boards where the ACPI tables are
+	 * known to contain bogus I2C devices.
+	 */
+	if (acpi_quirk_skip_i2c_client_enumeration(adev))
+		return;
+
 	adev->power.flags.ignore_parent = true;
 	acpi_device_set_enumerated(adev);
 
diff --git a/drivers/mmc/host/sdhci-acpi.c b/drivers/mmc/host/sdhci-acpi.c
index f1ef0d28b0dd..c0350e9c03f3 100644
--- a/drivers/mmc/host/sdhci-acpi.c
+++ b/drivers/mmc/host/sdhci-acpi.c
@@ -31,10 +31,8 @@
 #include <linux/mmc/slot-gpio.h>
 
 #ifdef CONFIG_X86
-#include <asm/cpu_device_id.h>
-#include <asm/intel-family.h>
+#include <linux/platform_data/x86/soc.h>
 #include <asm/iosf_mbi.h>
-#include <linux/pci.h>
 #endif
 
 #include "sdhci.h"
@@ -240,26 +238,6 @@ static const struct sdhci_acpi_chip sdhci_acpi_chip_int = {
 
 #ifdef CONFIG_X86
 
-static bool sdhci_acpi_byt(void)
-{
-	static const struct x86_cpu_id byt[] = {
-		X86_MATCH_INTEL_FAM6_MODEL(ATOM_SILVERMONT, NULL),
-		{}
-	};
-
-	return x86_match_cpu(byt);
-}
-
-static bool sdhci_acpi_cht(void)
-{
-	static const struct x86_cpu_id cht[] = {
-		X86_MATCH_INTEL_FAM6_MODEL(ATOM_AIRMONT, NULL),
-		{}
-	};
-
-	return x86_match_cpu(cht);
-}
-
 #define BYT_IOSF_SCCEP			0x63
 #define BYT_IOSF_OCP_NETCTRL0		0x1078
 #define BYT_IOSF_OCP_TIMEOUT_BASE	GENMASK(10, 8)
@@ -268,7 +246,7 @@ static void sdhci_acpi_byt_setting(struct device *dev)
 {
 	u32 val = 0;
 
-	if (!sdhci_acpi_byt())
+	if (!soc_intel_is_byt())
 		return;
 
 	if (iosf_mbi_read(BYT_IOSF_SCCEP, MBI_CR_READ, BYT_IOSF_OCP_NETCTRL0,
@@ -293,7 +271,7 @@ static void sdhci_acpi_byt_setting(struct device *dev)
 
 static bool sdhci_acpi_byt_defer(struct device *dev)
 {
-	if (!sdhci_acpi_byt())
+	if (!soc_intel_is_byt())
 		return false;
 
 	if (!iosf_mbi_available())
@@ -304,43 +282,6 @@ static bool sdhci_acpi_byt_defer(struct device *dev)
 	return false;
 }
 
-static bool sdhci_acpi_cht_pci_wifi(unsigned int vendor, unsigned int device,
-				    unsigned int slot, unsigned int parent_slot)
-{
-	struct pci_dev *dev, *parent, *from = NULL;
-
-	while (1) {
-		dev = pci_get_device(vendor, device, from);
-		pci_dev_put(from);
-		if (!dev)
-			break;
-		parent = pci_upstream_bridge(dev);
-		if (ACPI_COMPANION(&dev->dev) && PCI_SLOT(dev->devfn) == slot &&
-		    parent && PCI_SLOT(parent->devfn) == parent_slot &&
-		    !pci_upstream_bridge(parent)) {
-			pci_dev_put(dev);
-			return true;
-		}
-		from = dev;
-	}
-
-	return false;
-}
-
-/*
- * GPDwin uses PCI wifi which conflicts with SDIO's use of
- * acpi_device_fix_up_power() on child device nodes. Identifying GPDwin is
- * problematic, but since SDIO is only used for wifi, the presence of the PCI
- * wifi card in the expected slot with an ACPI companion node, is used to
- * indicate that acpi_device_fix_up_power() should be avoided.
- */
-static inline bool sdhci_acpi_no_fixup_child_power(struct acpi_device *adev)
-{
-	return sdhci_acpi_cht() &&
-	       acpi_dev_hid_uid_match(adev, "80860F14", "2") &&
-	       sdhci_acpi_cht_pci_wifi(0x14e4, 0x43ec, 0, 28);
-}
-
 #else
 
 static inline void sdhci_acpi_byt_setting(struct device *dev)
@@ -352,11 +293,6 @@ static inline bool sdhci_acpi_byt_defer(struct device *dev)
 	return false;
 }
 
-static inline bool sdhci_acpi_no_fixup_child_power(struct acpi_device *adev)
-{
-	return false;
-}
-
 #endif
 
 static int bxt_get_cd(struct mmc_host *mmc)
@@ -861,11 +797,9 @@ static int sdhci_acpi_probe(struct platform_device *pdev)
 
 	/* Power on the SDHCI controller and its children */
 	acpi_device_fix_up_power(device);
-	if (!sdhci_acpi_no_fixup_child_power(device)) {
-		list_for_each_entry(child, &device->children, node)
-			if (child->status.present && child->status.enabled)
-				acpi_device_fix_up_power(child);
-	}
+	list_for_each_entry(child, &device->children, node)
+		if (child->status.present && child->status.enabled)
+			acpi_device_fix_up_power(child);
 
 	if (sdhci_acpi_byt_defer(dev))
 		return -EPROBE_DEFER;
diff --git a/drivers/tty/serdev/core.c b/drivers/tty/serdev/core.c
index f1324fe99378..92e3433276f8 100644
--- a/drivers/tty/serdev/core.c
+++ b/drivers/tty/serdev/core.c
@@ -727,10 +727,24 @@ static acpi_status acpi_serdev_add_device(acpi_handle handle, u32 level,
 static int acpi_serdev_register_devices(struct serdev_controller *ctrl)
 {
 	acpi_status status;
+	bool skip;
+	int ret;
 
 	if (!has_acpi_companion(ctrl->dev.parent))
 		return -ENODEV;
 
+	/*
+	 * Skip registration on boards where the ACPI tables are known to
+	 * contain buggy devices. Note serdev_controller_add() must still
+	 * succeed in this case, so that the proper serdev devices can be
+	 * added "manually" later.
+	 */
+	ret = acpi_quirk_skip_serdev_enumeration(ctrl->dev.parent, &skip);
+	if (ret)
+		return ret;
+	if (skip)
+		return 0;
+
 	status = acpi_walk_namespace(ACPI_TYPE_DEVICE, ACPI_ROOT_OBJECT,
 				     SERDEV_ACPI_MAX_SCAN_DEPTH,
 				     acpi_serdev_add_device, NULL, ctrl, NULL);
author	Linus Torvalds <torvalds@linux-foundation.org>	2022-01-10 20:26:56 -0800
committer	Linus Torvalds <torvalds@linux-foundation.org>	2022-01-10 20:26:56 -0800
commit	bca21755b9fc00dbe371994b53389eb5d70b8e72 (patch)
tree	400369d681f31251007b48d43e4682c68d08769f /drivers
parent	63045bfd3c8dbe9c8bee7e33291202725154cb2c (diff)
parent	70df8e1bdc941431af2370270f5140291dcbb282 (diff)