diff options
Diffstat (limited to 'drivers')
29 files changed, 80 insertions, 87 deletions
diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig index f4f632917509..b0243fd55ac0 100644 --- a/drivers/acpi/Kconfig +++ b/drivers/acpi/Kconfig @@ -312,9 +312,13 @@ config ACPI_DEBUG bool "Debug Statements" default n help - The ACPI driver can optionally report errors with a great deal - of verbosity. Saying Y enables these statements. This will increase - your kernel size by around 50K. + The ACPI subsystem can produce debug output. Saying Y enables this + output and increases the kernel size by around 50K. + + Use the acpi.debug_layer and acpi.debug_level kernel command-line + parameters documented in Documentation/acpi/debug.txt and + Documentation/kernel-parameters.txt to control the type and + amount of debug output. config ACPI_DEBUG_FUNC_TRACE bool "Additionally enable ACPI function tracing" @@ -324,14 +328,6 @@ config ACPI_DEBUG_FUNC_TRACE ACPI Debug Statements slow down ACPI processing. Function trace is about half of the penalty and is rarely useful. -config ACPI_EC - bool - default y - help - This driver is required on some systems for the proper operation of - the battery and thermal drivers. If you are compiling for a - mobile system, say Y. - config ACPI_PCI_SLOT tristate "PCI slot detection driver" default n @@ -341,10 +337,6 @@ config ACPI_PCI_SLOT help you correlate PCI bus addresses with the physical geography of your slots. If you are unsure, say N. -config ACPI_POWER - bool - default y - config ACPI_SYSTEM bool default y diff --git a/drivers/acpi/Makefile b/drivers/acpi/Makefile index d91c027ece8f..fc622316a7d8 100644 --- a/drivers/acpi/Makefile +++ b/drivers/acpi/Makefile @@ -39,7 +39,7 @@ obj-y += sleep/ obj-y += bus.o glue.o obj-y += scan.o # Keep EC driver first. Initialization of others depend on it. -obj-$(CONFIG_ACPI_EC) += ec.o +obj-y += ec.o obj-$(CONFIG_ACPI_AC) += ac.o obj-$(CONFIG_ACPI_BATTERY) += battery.o obj-$(CONFIG_ACPI_BUTTON) += button.o @@ -51,7 +51,7 @@ obj-$(CONFIG_ACPI_PCI_SLOT) += pci_slot.o obj-$(CONFIG_ACPI_PROCESSOR) += processor.o obj-$(CONFIG_ACPI_CONTAINER) += container.o obj-$(CONFIG_ACPI_THERMAL) += thermal.o -obj-$(CONFIG_ACPI_POWER) += power.o +obj-y += power.o obj-$(CONFIG_ACPI_SYSTEM) += system.o event.o obj-$(CONFIG_ACPI_DEBUG) += debug.o obj-$(CONFIG_ACPI_NUMA) += numa.o diff --git a/drivers/acpi/ac.c b/drivers/acpi/ac.c index d72a1b6c8a94..5cdd713a0eaf 100644 --- a/drivers/acpi/ac.c +++ b/drivers/acpi/ac.c @@ -37,7 +37,6 @@ #include <acpi/acpi_bus.h> #include <acpi/acpi_drivers.h> -#define ACPI_AC_COMPONENT 0x00020000 #define ACPI_AC_CLASS "ac_adapter" #define ACPI_AC_DEVICE_NAME "AC Adapter" #define ACPI_AC_FILE_STATE "state" diff --git a/drivers/acpi/acpi_memhotplug.c b/drivers/acpi/acpi_memhotplug.c index 71d21c51c45f..63a17b55b39b 100644 --- a/drivers/acpi/acpi_memhotplug.c +++ b/drivers/acpi/acpi_memhotplug.c @@ -32,7 +32,6 @@ #include <linux/memory_hotplug.h> #include <acpi/acpi_drivers.h> -#define ACPI_MEMORY_DEVICE_COMPONENT 0x08000000UL #define ACPI_MEMORY_DEVICE_CLASS "memory" #define ACPI_MEMORY_DEVICE_HID "PNP0C80" #define ACPI_MEMORY_DEVICE_NAME "Hotplug Mem Device" diff --git a/drivers/acpi/battery.c b/drivers/acpi/battery.c index b2133e89ad9a..47f6e38fa6c8 100644 --- a/drivers/acpi/battery.c +++ b/drivers/acpi/battery.c @@ -46,7 +46,6 @@ #define ACPI_BATTERY_VALUE_UNKNOWN 0xFFFFFFFF -#define ACPI_BATTERY_COMPONENT 0x00040000 #define ACPI_BATTERY_CLASS "battery" #define ACPI_BATTERY_DEVICE_NAME "Battery" #define ACPI_BATTERY_NOTIFY_STATUS 0x80 diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c index c797c6473f31..7edf6d913c13 100644 --- a/drivers/acpi/bus.c +++ b/drivers/acpi/bus.c @@ -688,6 +688,14 @@ void __init acpi_early_init(void) if (acpi_disabled) return; + /* + * ACPI CA initializes acpi_dbg_level to non-zero, which means + * we get debug output merely by turning on CONFIG_ACPI_DEBUG. + * Turn it off so we don't get output unless the user specifies + * acpi.debug_level. + */ + acpi_dbg_level = 0; + printk(KERN_INFO PREFIX "Core revision %08x\n", ACPI_CA_VERSION); /* enable workarounds, unless strict ACPI spec. compliance */ @@ -774,7 +782,7 @@ static int __init acpi_bus_init(void) "Unable to initialize ACPI OS objects\n"); goto error1; } -#ifdef CONFIG_ACPI_EC + /* * ACPI 2.0 requires the EC driver to be loaded and work before * the EC device is found in the namespace (i.e. before acpi_initialize_objects() @@ -785,7 +793,6 @@ static int __init acpi_bus_init(void) */ status = acpi_ec_ecdt_probe(); /* Ignore result. Not having an ECDT is not fatal. */ -#endif status = acpi_initialize_objects(ACPI_FULL_INITIALIZATION); if (ACPI_FAILURE(status)) { diff --git a/drivers/acpi/button.c b/drivers/acpi/button.c index cb046c3fc3f2..fd7ca289cb02 100644 --- a/drivers/acpi/button.c +++ b/drivers/acpi/button.c @@ -33,7 +33,6 @@ #include <acpi/acpi_bus.h> #include <acpi/acpi_drivers.h> -#define ACPI_BUTTON_COMPONENT 0x00080000 #define ACPI_BUTTON_CLASS "button" #define ACPI_BUTTON_FILE_INFO "info" #define ACPI_BUTTON_FILE_STATE "state" diff --git a/drivers/acpi/cm_sbs.c b/drivers/acpi/cm_sbs.c index 4441e84b28a9..307963bd1043 100644 --- a/drivers/acpi/cm_sbs.c +++ b/drivers/acpi/cm_sbs.c @@ -34,7 +34,6 @@ ACPI_MODULE_NAME("cm_sbs"); #define ACPI_AC_CLASS "ac_adapter" #define ACPI_BATTERY_CLASS "battery" -#define ACPI_SBS_COMPONENT 0x00080000 #define _COMPONENT ACPI_SBS_COMPONENT static struct proc_dir_entry *acpi_ac_dir; static struct proc_dir_entry *acpi_battery_dir; @@ -105,9 +104,3 @@ void acpi_unlock_battery_dir(struct proc_dir_entry *acpi_battery_dir_param) return; } EXPORT_SYMBOL(acpi_unlock_battery_dir); - -static int __init acpi_cm_sbs_init(void) -{ - return 0; -} -subsys_initcall(acpi_cm_sbs_init); diff --git a/drivers/acpi/container.c b/drivers/acpi/container.c index 134818b265a9..17020c12623c 100644 --- a/drivers/acpi/container.c +++ b/drivers/acpi/container.c @@ -41,7 +41,6 @@ #define INSTALL_NOTIFY_HANDLER 1 #define UNINSTALL_NOTIFY_HANDLER 2 -#define ACPI_CONTAINER_COMPONENT 0x01000000 #define _COMPONENT ACPI_CONTAINER_COMPONENT ACPI_MODULE_NAME("container"); diff --git a/drivers/acpi/debug.c b/drivers/acpi/debug.c index abf36b4b1d1d..c48396892008 100644 --- a/drivers/acpi/debug.c +++ b/drivers/acpi/debug.c @@ -44,6 +44,21 @@ static const struct acpi_dlayer acpi_debug_layers[] = { ACPI_DEBUG_INIT(ACPI_CA_DISASSEMBLER), ACPI_DEBUG_INIT(ACPI_COMPILER), ACPI_DEBUG_INIT(ACPI_TOOLS), + + ACPI_DEBUG_INIT(ACPI_BUS_COMPONENT), + ACPI_DEBUG_INIT(ACPI_AC_COMPONENT), + ACPI_DEBUG_INIT(ACPI_BATTERY_COMPONENT), + ACPI_DEBUG_INIT(ACPI_BUTTON_COMPONENT), + ACPI_DEBUG_INIT(ACPI_SBS_COMPONENT), + ACPI_DEBUG_INIT(ACPI_FAN_COMPONENT), + ACPI_DEBUG_INIT(ACPI_PCI_COMPONENT), + ACPI_DEBUG_INIT(ACPI_POWER_COMPONENT), + ACPI_DEBUG_INIT(ACPI_CONTAINER_COMPONENT), + ACPI_DEBUG_INIT(ACPI_SYSTEM_COMPONENT), + ACPI_DEBUG_INIT(ACPI_THERMAL_COMPONENT), + ACPI_DEBUG_INIT(ACPI_MEMORY_DEVICE_COMPONENT), + ACPI_DEBUG_INIT(ACPI_VIDEO_COMPONENT), + ACPI_DEBUG_INIT(ACPI_PROCESSOR_COMPONENT), }; static const struct acpi_dlevel acpi_debug_levels[] = { diff --git a/drivers/acpi/events/evgpe.c b/drivers/acpi/events/evgpe.c index c5e53aae86f7..f45c74fe745e 100644 --- a/drivers/acpi/events/evgpe.c +++ b/drivers/acpi/events/evgpe.c @@ -289,8 +289,6 @@ acpi_status acpi_ev_disable_gpe(struct acpi_gpe_event_info *gpe_event_info) */ status = acpi_hw_low_disable_gpe(gpe_event_info); return_ACPI_STATUS(status); - - return_ACPI_STATUS(AE_OK); } /******************************************************************************* diff --git a/drivers/acpi/fan.c b/drivers/acpi/fan.c index 60d54d1f6b19..eaaee1660bdf 100644 --- a/drivers/acpi/fan.c +++ b/drivers/acpi/fan.c @@ -34,7 +34,6 @@ #include <acpi/acpi_bus.h> #include <acpi/acpi_drivers.h> -#define ACPI_FAN_COMPONENT 0x00200000 #define ACPI_FAN_CLASS "fan" #define ACPI_FAN_FILE_STATE "state" diff --git a/drivers/acpi/pci_link.c b/drivers/acpi/pci_link.c index fcfdef7b4fdd..e52ad91ce2dc 100644 --- a/drivers/acpi/pci_link.c +++ b/drivers/acpi/pci_link.c @@ -531,7 +531,7 @@ int __init acpi_irq_penalty_init(void) return 0; } -static int acpi_irq_balance; /* 0: static, 1: balance */ +static int acpi_irq_balance = -1; /* 0: static, 1: balance */ static int acpi_pci_link_allocate(struct acpi_pci_link *link) { @@ -950,10 +950,17 @@ device_initcall(irqrouter_init_sysfs); static int __init acpi_pci_link_init(void) { - if (acpi_noirq) return 0; + if (acpi_irq_balance == -1) { + /* no command line switch: enable balancing in IOAPIC mode */ + if (acpi_irq_model == ACPI_IRQ_MODEL_IOAPIC) + acpi_irq_balance = 1; + else + acpi_irq_balance = 0; + } + acpi_link.count = 0; INIT_LIST_HEAD(&acpi_link.entries); diff --git a/drivers/acpi/pci_root.c b/drivers/acpi/pci_root.c index 1b8f67d21d53..642554b1b60c 100644 --- a/drivers/acpi/pci_root.c +++ b/drivers/acpi/pci_root.c @@ -376,15 +376,9 @@ static int acpi_pci_root_remove(struct acpi_device *device, int type) static int __init acpi_pci_root_init(void) { - if (acpi_pci_disabled) return 0; - /* DEBUG: - acpi_dbg_layer = ACPI_PCI_COMPONENT; - acpi_dbg_level = 0xFFFFFFFF; - */ - if (acpi_bus_register_driver(&acpi_pci_root_driver) < 0) return -ENODEV; diff --git a/drivers/acpi/power.c b/drivers/acpi/power.c index a1718e56103b..81f583f8098b 100644 --- a/drivers/acpi/power.c +++ b/drivers/acpi/power.c @@ -44,9 +44,8 @@ #include <acpi/acpi_bus.h> #include <acpi/acpi_drivers.h> -#define _COMPONENT ACPI_POWER_COMPONENT +#define _COMPONENT ACPI_POWER_COMPONENT ACPI_MODULE_NAME("power"); -#define ACPI_POWER_COMPONENT 0x00800000 #define ACPI_POWER_CLASS "power_resource" #define ACPI_POWER_DEVICE_NAME "Power Resource" #define ACPI_POWER_FILE_INFO "info" diff --git a/drivers/acpi/processor_core.c b/drivers/acpi/processor_core.c index 24a362f8034c..105e0ff83848 100644 --- a/drivers/acpi/processor_core.c +++ b/drivers/acpi/processor_core.c @@ -59,7 +59,6 @@ #include <acpi/acpi_drivers.h> #include <acpi/processor.h> -#define ACPI_PROCESSOR_COMPONENT 0x01000000 #define ACPI_PROCESSOR_CLASS "processor" #define ACPI_PROCESSOR_DEVICE_NAME "Processor" #define ACPI_PROCESSOR_FILE_INFO "info" diff --git a/drivers/acpi/processor_idle.c b/drivers/acpi/processor_idle.c index 81b40ed5379e..5f8d746a9b81 100644 --- a/drivers/acpi/processor_idle.c +++ b/drivers/acpi/processor_idle.c @@ -59,7 +59,6 @@ #include <acpi/processor.h> #include <asm/processor.h> -#define ACPI_PROCESSOR_COMPONENT 0x01000000 #define ACPI_PROCESSOR_CLASS "processor" #define _COMPONENT ACPI_PROCESSOR_COMPONENT ACPI_MODULE_NAME("processor_idle"); diff --git a/drivers/acpi/processor_perflib.c b/drivers/acpi/processor_perflib.c index dbcf260ea93f..0d7b772bef50 100644 --- a/drivers/acpi/processor_perflib.c +++ b/drivers/acpi/processor_perflib.c @@ -44,9 +44,9 @@ #endif #include <acpi/acpi_bus.h> +#include <acpi/acpi_drivers.h> #include <acpi/processor.h> -#define ACPI_PROCESSOR_COMPONENT 0x01000000 #define ACPI_PROCESSOR_CLASS "processor" #define ACPI_PROCESSOR_FILE_PERFORMANCE "performance" #define _COMPONENT ACPI_PROCESSOR_COMPONENT diff --git a/drivers/acpi/processor_thermal.c b/drivers/acpi/processor_thermal.c index ef34b18f95ca..b1eb376fae45 100644 --- a/drivers/acpi/processor_thermal.c +++ b/drivers/acpi/processor_thermal.c @@ -40,7 +40,6 @@ #include <acpi/processor.h> #include <acpi/acpi_drivers.h> -#define ACPI_PROCESSOR_COMPONENT 0x01000000 #define ACPI_PROCESSOR_CLASS "processor" #define _COMPONENT ACPI_PROCESSOR_COMPONENT ACPI_MODULE_NAME("processor_thermal"); diff --git a/drivers/acpi/processor_throttling.c b/drivers/acpi/processor_throttling.c index 3da2df93d924..a0c38c94a8a0 100644 --- a/drivers/acpi/processor_throttling.c +++ b/drivers/acpi/processor_throttling.c @@ -38,9 +38,9 @@ #include <asm/uaccess.h> #include <acpi/acpi_bus.h> +#include <acpi/acpi_drivers.h> #include <acpi/processor.h> -#define ACPI_PROCESSOR_COMPONENT 0x01000000 #define ACPI_PROCESSOR_CLASS "processor" #define _COMPONENT ACPI_PROCESSOR_COMPONENT ACPI_MODULE_NAME("processor_throttling"); diff --git a/drivers/acpi/reboot.c b/drivers/acpi/reboot.c index 755baf2ca70a..a6b662c00b67 100644 --- a/drivers/acpi/reboot.c +++ b/drivers/acpi/reboot.c @@ -15,28 +15,9 @@ void acpi_reboot(void) rr = &acpi_gbl_FADT.reset_register; - /* - * Is the ACPI reset register supported? - * - * According to ACPI 3.0, FADT.flags.RESET_REG_SUP indicates - * whether the ACPI reset mechanism is supported. - * - * However, some boxes have this bit clear, yet a valid - * ACPI_RESET_REG & RESET_VALUE, and ACPI reboot is the only - * mechanism that works for them after S3. - * - * This suggests that other operating systems may not be checking - * the RESET_REG_SUP bit, and are using other means to decide - * whether to use the ACPI reboot mechanism or not. - * - * So when acpi reboot is requested, - * only the reset_register is checked. If the following - * conditions are met, it indicates that the reset register is supported. - * a. reset_register is not zero - * b. the access width is eight - * c. the bit_offset is zero - */ - if (!(rr->address) || rr->bit_width != 8 || rr->bit_offset != 0) + /* Is the reset register supported? */ + if (!(acpi_gbl_FADT.flags & ACPI_FADT_RESET_REGISTER) || + rr->bit_width != 8 || rr->bit_offset != 0) return; reset_value = acpi_gbl_FADT.reset_value; diff --git a/drivers/acpi/tables/tbfadt.c b/drivers/acpi/tables/tbfadt.c index 2c7885e7ffba..2817158fb6a1 100644 --- a/drivers/acpi/tables/tbfadt.c +++ b/drivers/acpi/tables/tbfadt.c @@ -304,7 +304,7 @@ static void acpi_tb_convert_fadt(void) * The ACPI 1.0 reserved fields that will be zeroed are the bytes located at * offset 45, 55, 95, and the word located at offset 109, 110. */ - if (acpi_gbl_FADT.header.revision < 3) { + if (acpi_gbl_FADT.header.revision < FADT2_REVISION_ID) { acpi_gbl_FADT.preferred_profile = 0; acpi_gbl_FADT.pstate_control = 0; acpi_gbl_FADT.cst_control = 0; diff --git a/drivers/acpi/thermal.c b/drivers/acpi/thermal.c index ad6cae938f0b..a6da1d9918c7 100644 --- a/drivers/acpi/thermal.c +++ b/drivers/acpi/thermal.c @@ -47,7 +47,6 @@ #include <acpi/acpi_bus.h> #include <acpi/acpi_drivers.h> -#define ACPI_THERMAL_COMPONENT 0x04000000 #define ACPI_THERMAL_CLASS "thermal_zone" #define ACPI_THERMAL_DEVICE_NAME "Thermal Zone" #define ACPI_THERMAL_FILE_STATE "state" diff --git a/drivers/acpi/video.c b/drivers/acpi/video.c index a29b0ccac65a..a3aad30d39f6 100644 --- a/drivers/acpi/video.c +++ b/drivers/acpi/video.c @@ -41,7 +41,6 @@ #include <acpi/acpi_bus.h> #include <acpi/acpi_drivers.h> -#define ACPI_VIDEO_COMPONENT 0x08000000 #define ACPI_VIDEO_CLASS "video" #define ACPI_VIDEO_BUS_NAME "Video Bus" #define ACPI_VIDEO_DEVICE_NAME "Video Device" @@ -2094,12 +2093,6 @@ static int __init acpi_video_init(void) { int result = 0; - - /* - acpi_dbg_level = 0xFFFFFFFF; - acpi_dbg_layer = 0x08000000; - */ - acpi_video_dir = proc_mkdir(ACPI_VIDEO_CLASS, acpi_root_dir); if (!acpi_video_dir) return -ENODEV; diff --git a/drivers/char/sonypi.c b/drivers/char/sonypi.c index 2457b07dabd6..f4374437a033 100644 --- a/drivers/char/sonypi.c +++ b/drivers/char/sonypi.c @@ -523,7 +523,7 @@ static int acpi_driver_registered; static int sonypi_ec_write(u8 addr, u8 value) { -#ifdef CONFIG_ACPI_EC +#ifdef CONFIG_ACPI if (SONYPI_ACPI_ACTIVE) return ec_write(addr, value); #endif @@ -539,7 +539,7 @@ static int sonypi_ec_write(u8 addr, u8 value) static int sonypi_ec_read(u8 addr, u8 *value) { -#ifdef CONFIG_ACPI_EC +#ifdef CONFIG_ACPI if (SONYPI_ACPI_ACTIVE) return ec_read(addr, value); #endif diff --git a/drivers/idle/Kconfig b/drivers/idle/Kconfig index 108264de0ac9..f15e90a453d1 100644 --- a/drivers/idle/Kconfig +++ b/drivers/idle/Kconfig @@ -1,5 +1,6 @@ menu "Memory power savings" +depends on X86_64 config I7300_IDLE_IOAT_CHANNEL bool @@ -7,7 +8,7 @@ config I7300_IDLE_IOAT_CHANNEL config I7300_IDLE tristate "Intel chipset idle memory power saving driver" select I7300_IDLE_IOAT_CHANNEL - depends on X86_64 && EXPERIMENTAL + depends on EXPERIMENTAL help Enable memory power savings when idle with certain Intel server chipsets. The chipset must have I/O AT support, such as the diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig index 9494400e8fd0..4494ad27cbf1 100644 --- a/drivers/misc/Kconfig +++ b/drivers/misc/Kconfig @@ -230,7 +230,7 @@ config HP_WMI config MSI_LAPTOP tristate "MSI Laptop Extras" depends on X86 - depends on ACPI_EC + depends on ACPI depends on BACKLIGHT_CLASS_DEVICE ---help--- This is a driver for laptops built by MSI (MICRO-STAR @@ -260,7 +260,7 @@ config PANASONIC_LAPTOP config COMPAL_LAPTOP tristate "Compal Laptop Extras" depends on X86 - depends on ACPI_EC + depends on ACPI depends on BACKLIGHT_CLASS_DEVICE ---help--- This is a driver for laptops built by Compal: diff --git a/drivers/misc/fujitsu-laptop.c b/drivers/misc/fujitsu-laptop.c index d2cf0bfe3163..5ec77ae08d92 100644 --- a/drivers/misc/fujitsu-laptop.c +++ b/drivers/misc/fujitsu-laptop.c @@ -464,6 +464,14 @@ static int dmi_check_cb_s6410(const struct dmi_system_id *id) return 0; } +static int dmi_check_cb_s6420(const struct dmi_system_id *id) +{ + dmi_check_cb_common(id); + fujitsu->keycode1 = KEY_SCREENLOCK; /* "Lock" */ + fujitsu->keycode2 = KEY_HELP; /* "Mobility Center" */ + return 0; +} + static int dmi_check_cb_p8010(const struct dmi_system_id *id) { dmi_check_cb_common(id); @@ -473,7 +481,7 @@ static int dmi_check_cb_p8010(const struct dmi_system_id *id) return 0; } -static struct dmi_system_id __initdata fujitsu_dmi_table[] = { +static struct dmi_system_id fujitsu_dmi_table[] = { { .ident = "Fujitsu Siemens S6410", .matches = { @@ -482,6 +490,13 @@ static struct dmi_system_id __initdata fujitsu_dmi_table[] = { }, .callback = dmi_check_cb_s6410}, { + .ident = "Fujitsu Siemens S6420", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"), + DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK S6420"), + }, + .callback = dmi_check_cb_s6420}, + { .ident = "Fujitsu LifeBook P8010", .matches = { DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"), diff --git a/drivers/misc/intel_menlow.c b/drivers/misc/intel_menlow.c index e00a2756e97e..27b7662955bb 100644 --- a/drivers/misc/intel_menlow.c +++ b/drivers/misc/intel_menlow.c @@ -52,6 +52,11 @@ MODULE_LICENSE("GPL"); #define MEMORY_ARG_CUR_BANDWIDTH 1 #define MEMORY_ARG_MAX_BANDWIDTH 0 +/* + * GTHS returning 'n' would mean that [0,n-1] states are supported + * In that case max_cstate would be n-1 + * GTHS returning '0' would mean that no bandwidth control states are supported + */ static int memory_get_int_max_bandwidth(struct thermal_cooling_device *cdev, unsigned long *max_state) { @@ -71,6 +76,9 @@ static int memory_get_int_max_bandwidth(struct thermal_cooling_device *cdev, if (ACPI_FAILURE(status)) return -EFAULT; + if (!value) + return -EINVAL; + *max_state = value - 1; return 0; } @@ -121,7 +129,7 @@ static int memory_set_cur_bandwidth(struct thermal_cooling_device *cdev, if (memory_get_int_max_bandwidth(cdev, &max_state)) return -EFAULT; - if (max_state < 0 || state > max_state) + if (state > max_state) return -EINVAL; arg_list.count = 1; |