Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input

Pull input fixes from Dmitry Torokhov:

 - tweaks to Elan drivers (both PS/2 and I2C) to support new devices.
   Also revert of one of IDs as that device should really be driven by
   i2c-hid + hid-multitouch

 - a few drivers have been switched to set_brightness_blocking() call
   because they either were sleeping the their set_brightness()
   implementation or used workqueue but were not canceling it on unbind.

 - ps2-gpio and matrix_keypad needed to [properly] flush their works to
   avoid potential use-after-free on unbind.

 - other miscellaneous fixes.

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
  Input: elan_i2c - add ACPI ID for touchpad in Lenovo V330-15ISK
  Input: st-keyscan - fix potential zalloc NULL dereference
  Input: apanel - switch to using brightness_set_blocking()
  Revert "Input: elan_i2c - add ACPI ID for touchpad in ASUS Aspire F5-573G"
  Input: qt2160 - switch to using brightness_set_blocking()
  Input: matrix_keypad - use flush_delayed_work()
  Input: ps2-gpio - flush TX work when closing port
  Input: cap11xx - switch to using set_brightness_blocking()
  Input: elantech - enable 3rd button support on Fujitsu CELSIUS H780
  Input: bma150 - register input device after setting private data
  Input: pwm-vibra - stop regulator after disabling pwm, not before
  Input: pwm-vibra - prevent unbalanced regulator
  Input: snvs_pwrkey - allow selecting driver for i.MX 7D

11 files changed, 75 insertions, 101 deletions

diff --git a/drivers/input/keyboard/Kconfig b/drivers/input/keyboard/Kconfig
index 4713957b0cbb..a878351f1643 100644
--- a/drivers/input/keyboard/Kconfig
+++ b/drivers/input/keyboard/Kconfig
@@ -420,7 +420,7 @@ config KEYBOARD_MPR121
 
 config KEYBOARD_SNVS_PWRKEY
 	tristate "IMX SNVS Power Key Driver"
-	depends on SOC_IMX6SX
+	depends on SOC_IMX6SX || SOC_IMX7D
 	depends on OF
 	help
 	  This is the snvs powerkey driver for the Freescale i.MX application
diff --git a/drivers/input/keyboard/cap11xx.c b/drivers/input/keyboard/cap11xx.c
index 312916f99597..73686c2460ce 100644
--- a/drivers/input/keyboard/cap11xx.c
+++ b/drivers/input/keyboard/cap11xx.c
@@ -75,9 +75,7 @@
 struct cap11xx_led {
 	struct cap11xx_priv *priv;
 	struct led_classdev cdev;
-	struct work_struct work;
 	u32 reg;
-	enum led_brightness new_brightness;
 };
 #endif
 
@@ -233,30 +231,21 @@ static void cap11xx_input_close(struct input_dev *idev)
 }
 
 #ifdef CONFIG_LEDS_CLASS
-static void cap11xx_led_work(struct work_struct *work)
+static int cap11xx_led_set(struct led_classdev *cdev,
+			    enum led_brightness value)
 {
-	struct cap11xx_led *led = container_of(work, struct cap11xx_led, work);
+	struct cap11xx_led *led = container_of(cdev, struct cap11xx_led, cdev);
 	struct cap11xx_priv *priv = led->priv;
-	int value = led->new_brightness;
 
 	/*
-	 * All LEDs share the same duty cycle as this is a HW limitation.
-	 * Brightness levels per LED are either 0 (OFF) and 1 (ON).
+	 * All LEDs share the same duty cycle as this is a HW
+	 * limitation. Brightness levels per LED are either
+	 * 0 (OFF) and 1 (ON).
 	 */
-	regmap_update_bits(priv->regmap, CAP11XX_REG_LED_OUTPUT_CONTROL,
-				BIT(led->reg), value ? BIT(led->reg) : 0);
-}
-
-static void cap11xx_led_set(struct led_classdev *cdev,
-			   enum led_brightness value)
-{
-	struct cap11xx_led *led = container_of(cdev, struct cap11xx_led, cdev);
-
-	if (led->new_brightness == value)
-		return;
-
-	led->new_brightness = value;
-	schedule_work(&led->work);
+	return regmap_update_bits(priv->regmap,
+				  CAP11XX_REG_LED_OUTPUT_CONTROL,
+				  BIT(led->reg),
+				  value ? BIT(led->reg) : 0);
 }
 
 static int cap11xx_init_leds(struct device *dev,
@@ -299,7 +288,7 @@ static int cap11xx_init_leds(struct device *dev,
 		led->cdev.default_trigger =
 			of_get_property(child, "linux,default-trigger", NULL);
 		led->cdev.flags = 0;
-		led->cdev.brightness_set = cap11xx_led_set;
+		led->cdev.brightness_set_blocking = cap11xx_led_set;
 		led->cdev.max_brightness = 1;
 		led->cdev.brightness = LED_OFF;
 
@@ -312,8 +301,6 @@ static int cap11xx_init_leds(struct device *dev,
 		led->reg = reg;
 		led->priv = priv;
 
-		INIT_WORK(&led->work, cap11xx_led_work);
-
 		error = devm_led_classdev_register(dev, &led->cdev);
 		if (error) {
 			of_node_put(child);
diff --git a/drivers/input/keyboard/matrix_keypad.c b/drivers/input/keyboard/matrix_keypad.c
index 403452ef00e6..3d1cb7bf5e35 100644
--- a/drivers/input/keyboard/matrix_keypad.c
+++ b/drivers/input/keyboard/matrix_keypad.c
@@ -222,7 +222,7 @@ static void matrix_keypad_stop(struct input_dev *dev)
 	keypad->stopped = true;
 	spin_unlock_irq(&keypad->lock);
 
-	flush_work(&keypad->work.work);
+	flush_delayed_work(&keypad->work);
 	/*
 	 * matrix_keypad_scan() will leave IRQs enabled;
 	 * we should disable them now.
diff --git a/drivers/input/keyboard/qt2160.c b/drivers/input/keyboard/qt2160.c
index 43b86482dda0..d466bc07aebb 100644
--- a/drivers/input/keyboard/qt2160.c
+++ b/drivers/input/keyboard/qt2160.c
@@ -58,10 +58,9 @@ static unsigned char qt2160_key2code[] = {
 struct qt2160_led {
 	struct qt2160_data *qt2160;
 	struct led_classdev cdev;
-	struct work_struct work;
 	char name[32];
 	int id;
-	enum led_brightness new_brightness;
+	enum led_brightness brightness;
 };
 #endif
 
@@ -74,7 +73,6 @@ struct qt2160_data {
 	u16 key_matrix;
 #ifdef CONFIG_LEDS_CLASS
 	struct qt2160_led leds[QT2160_NUM_LEDS_X];
-	struct mutex led_lock;
 #endif
 };
 
@@ -83,46 +81,39 @@ static int qt2160_write(struct i2c_client *client, u8 reg, u8 data);
 
 #ifdef CONFIG_LEDS_CLASS
 
-static void qt2160_led_work(struct work_struct *work)
+static int qt2160_led_set(struct led_classdev *cdev,
+			  enum led_brightness value)
 {
-	struct qt2160_led *led = container_of(work, struct qt2160_led, work);
+	struct qt2160_led *led = container_of(cdev, struct qt2160_led, cdev);
 	struct qt2160_data *qt2160 = led->qt2160;
 	struct i2c_client *client = qt2160->client;
-	int value = led->new_brightness;
 	u32 drive, pwmen;
 
-	mutex_lock(&qt2160->led_lock);
-
-	drive = qt2160_read(client, QT2160_CMD_DRIVE_X);
-	pwmen = qt2160_read(client, QT2160_CMD_PWMEN_X);
-	if (value != LED_OFF) {
-		drive |= (1 << led->id);
-		pwmen |= (1 << led->id);
-
-	} else {
-		drive &= ~(1 << led->id);
-		pwmen &= ~(1 << led->id);
-	}
-	qt2160_write(client, QT2160_CMD_DRIVE_X, drive);
-	qt2160_write(client, QT2160_CMD_PWMEN_X, pwmen);
+	if (value != led->brightness) {
+		drive = qt2160_read(client, QT2160_CMD_DRIVE_X);
+		pwmen = qt2160_read(client, QT2160_CMD_PWMEN_X);
+		if (value != LED_OFF) {
+			drive |= BIT(led->id);
+			pwmen |= BIT(led->id);
 
-	/*
-	 * Changing this register will change the brightness
-	 * of every LED in the qt2160. It's a HW limitation.
-	 */
-	if (value != LED_OFF)
-		qt2160_write(client, QT2160_CMD_PWM_DUTY, value);
+		} else {
+			drive &= ~BIT(led->id);
+			pwmen &= ~BIT(led->id);
+		}
+		qt2160_write(client, QT2160_CMD_DRIVE_X, drive);
+		qt2160_write(client, QT2160_CMD_PWMEN_X, pwmen);
 
-	mutex_unlock(&qt2160->led_lock);
-}
+		/*
+		 * Changing this register will change the brightness
+		 * of every LED in the qt2160. It's a HW limitation.
+		 */
+		if (value != LED_OFF)
+			qt2160_write(client, QT2160_CMD_PWM_DUTY, value);
 
-static void qt2160_led_set(struct led_classdev *cdev,
-			   enum led_brightness value)
-{
-	struct qt2160_led *led = container_of(cdev, struct qt2160_led, cdev);
+		led->brightness = value;
+	}
 
-	led->new_brightness = value;
-	schedule_work(&led->work);
+	return 0;
 }
 
 #endif /* CONFIG_LEDS_CLASS */
@@ -293,20 +284,16 @@ static int qt2160_register_leds(struct qt2160_data *qt2160)
 	int ret;
 	int i;
 
-	mutex_init(&qt2160->led_lock);
-
 	for (i = 0; i < QT2160_NUM_LEDS_X; i++) {
 		struct qt2160_led *led = &qt2160->leds[i];
 
 		snprintf(led->name, sizeof(led->name), "qt2160:x%d", i);
 		led->cdev.name = led->name;
-		led->cdev.brightness_set = qt2160_led_set;
+		led->cdev.brightness_set_blocking = qt2160_led_set;
 		led->cdev.brightness = LED_OFF;
 		led->id = i;
 		led->qt2160 = qt2160;
 
-		INIT_WORK(&led->work, qt2160_led_work);
-
 		ret = led_classdev_register(&client->dev, &led->cdev);
 		if (ret < 0)
 			return ret;
@@ -324,10 +311,8 @@ static void qt2160_unregister_leds(struct qt2160_data *qt2160)
 {
 	int i;
 
-	for (i = 0; i < QT2160_NUM_LEDS_X; i++) {
+	for (i = 0; i < QT2160_NUM_LEDS_X; i++)
 		led_classdev_unregister(&qt2160->leds[i].cdev);
-		cancel_work_sync(&qt2160->leds[i].work);
-	}
 }
 
 #else
diff --git a/drivers/input/keyboard/st-keyscan.c b/drivers/input/keyboard/st-keyscan.c
index babcfb165e4f..3b85631fde91 100644
--- a/drivers/input/keyboard/st-keyscan.c
+++ b/drivers/input/keyboard/st-keyscan.c
@@ -153,6 +153,8 @@ static int keyscan_probe(struct platform_device *pdev)
 
 	input_dev->id.bustype = BUS_HOST;
 
+	keypad_data->input_dev = input_dev;
+
 	error = keypad_matrix_key_parse_dt(keypad_data);
 	if (error)
 		return error;
@@ -168,8 +170,6 @@ static int keyscan_probe(struct platform_device *pdev)
 
 	input_set_drvdata(input_dev, keypad_data);
 
-	keypad_data->input_dev = input_dev;
-
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	keypad_data->base = devm_ioremap_resource(&pdev->dev, res);
 	if (IS_ERR(keypad_data->base))
diff --git a/drivers/input/misc/apanel.c b/drivers/input/misc/apanel.c
index 094bddf56755..c1e66f45d552 100644
--- a/drivers/input/misc/apanel.c
+++ b/drivers/input/misc/apanel.c
@@ -22,7 +22,6 @@
 #include <linux/io.h>
 #include <linux/input-polldev.h>
 #include <linux/i2c.h>
-#include <linux/workqueue.h>
 #include <linux/leds.h>
 
 #define APANEL_NAME	"Fujitsu Application Panel"
@@ -59,8 +58,6 @@ struct apanel {
 	struct i2c_client *client;
 	unsigned short keymap[MAX_PANEL_KEYS];
 	u16    nkeys;
-	u16    led_bits;
-	struct work_struct led_work;
 	struct led_classdev mail_led;
 };
 
@@ -109,25 +106,13 @@ static void apanel_poll(struct input_polled_dev *ipdev)
 			report_key(idev, ap->keymap[i]);
 }
 
-/* Track state changes of LED */
-static void led_update(struct work_struct *work)
-{
-	struct apanel *ap = container_of(work, struct apanel, led_work);
-
-	i2c_smbus_write_word_data(ap->client, 0x10, ap->led_bits);
-}
-
-static void mail_led_set(struct led_classdev *led,
+static int mail_led_set(struct led_classdev *led,
 			 enum led_brightness value)
 {
 	struct apanel *ap = container_of(led, struct apanel, mail_led);
+	u16 led_bits = value != LED_OFF ? 0x8000 : 0x0000;
 
-	if (value != LED_OFF)
-		ap->led_bits |= 0x8000;
-	else
-		ap->led_bits &= ~0x8000;
-
-	schedule_work(&ap->led_work);
+	return i2c_smbus_write_word_data(ap->client, 0x10, led_bits);
 }
 
 static int apanel_remove(struct i2c_client *client)
@@ -179,7 +164,7 @@ static struct apanel apanel = {
 	},
 	.mail_led = {
 		.name = "mail:blue",
-		.brightness_set = mail_led_set,
+		.brightness_set_blocking = mail_led_set,
 	},
 };
 
@@ -235,7 +220,6 @@ static int apanel_probe(struct i2c_client *client,
 	if (err)
 		goto out3;
 
-	INIT_WORK(&ap->led_work, led_update);
 	if (device_chip[APANEL_DEV_LED] != CHIP_NONE) {
 		err = led_classdev_register(&client->dev, &ap->mail_led);
 		if (err)
diff --git a/drivers/input/misc/bma150.c b/drivers/input/misc/bma150.c
index 1efcfdf9f8a8..dd9dd4e40827 100644
--- a/drivers/input/misc/bma150.c
+++ b/drivers/input/misc/bma150.c
@@ -481,13 +481,14 @@ static int bma150_register_input_device(struct bma150_data *bma150)
 	idev->close = bma150_irq_close;
 	input_set_drvdata(idev, bma150);
 
+	bma150->input = idev;
+
 	error = input_register_device(idev);
 	if (error) {
 		input_free_device(idev);
 		return error;
 	}
 
-	bma150->input = idev;
 	return 0;
 }
 
@@ -510,15 +511,15 @@ static int bma150_register_polled_device(struct bma150_data *bma150)
 
 	bma150_init_input_device(bma150, ipoll_dev->input);
 
+	bma150->input_polled = ipoll_dev;
+	bma150->input = ipoll_dev->input;
+
 	error = input_register_polled_device(ipoll_dev);
 	if (error) {
 		input_free_polled_device(ipoll_dev);
 		return error;
 	}
 
-	bma150->input_polled = ipoll_dev;
-	bma150->input = ipoll_dev->input;
-
 	return 0;
 }
 
diff --git a/drivers/input/misc/pwm-vibra.c b/drivers/input/misc/pwm-vibra.c
index 55da191ae550..dbb6d9e1b947 100644
--- a/drivers/input/misc/pwm-vibra.c
+++ b/drivers/input/misc/pwm-vibra.c
@@ -34,6 +34,7 @@ struct pwm_vibrator {
 	struct work_struct play_work;
 	u16 level;
 	u32 direction_duty_cycle;
+	bool vcc_on;
 };
 
 static int pwm_vibrator_start(struct pwm_vibrator *vibrator)
@@ -42,10 +43,13 @@ static int pwm_vibrator_start(struct pwm_vibrator *vibrator)
 	struct pwm_state state;
 	int err;
 
-	err = regulator_enable(vibrator->vcc);
-	if (err) {
-		dev_err(pdev, "failed to enable regulator: %d", err);
-		return err;
+	if (!vibrator->vcc_on) {
+		err = regulator_enable(vibrator->vcc);
+		if (err) {
+			dev_err(pdev, "failed to enable regulator: %d", err);
+			return err;
+		}
+		vibrator->vcc_on = true;
 	}
 
 	pwm_get_state(vibrator->pwm, &state);
@@ -76,11 +80,14 @@ static int pwm_vibrator_start(struct pwm_vibrator *vibrator)
 
 static void pwm_vibrator_stop(struct pwm_vibrator *vibrator)
 {
-	regulator_disable(vibrator->vcc);
-
 	if (vibrator->pwm_dir)
 		pwm_disable(vibrator->pwm_dir);
 	pwm_disable(vibrator->pwm);
+
+	if (vibrator->vcc_on) {
+		regulator_disable(vibrator->vcc);
+		vibrator->vcc_on = false;
+	}
 }
 
 static void pwm_vibrator_play_work(struct work_struct *work)
diff --git a/drivers/input/mouse/elan_i2c_core.c b/drivers/input/mouse/elan_i2c_core.c
index f322a1768fbb..225ae6980182 100644
--- a/drivers/input/mouse/elan_i2c_core.c
+++ b/drivers/input/mouse/elan_i2c_core.c
@@ -1336,7 +1336,6 @@ MODULE_DEVICE_TABLE(i2c, elan_id);
 static const struct acpi_device_id elan_acpi_id[] = {
 	{ "ELAN0000", 0 },
 	{ "ELAN0100", 0 },
-	{ "ELAN0501", 0 },
 	{ "ELAN0600", 0 },
 	{ "ELAN0602", 0 },
 	{ "ELAN0605", 0 },
@@ -1346,6 +1345,7 @@ static const struct acpi_device_id elan_acpi_id[] = {
 	{ "ELAN060C", 0 },
 	{ "ELAN0611", 0 },
 	{ "ELAN0612", 0 },
+	{ "ELAN0617", 0 },
 	{ "ELAN0618", 0 },
 	{ "ELAN061C", 0 },
 	{ "ELAN061D", 0 },
diff --git a/drivers/input/mouse/elantech.c b/drivers/input/mouse/elantech.c
index 9fe075c137dc..a7f8b1614559 100644
--- a/drivers/input/mouse/elantech.c
+++ b/drivers/input/mouse/elantech.c
@@ -1119,6 +1119,8 @@ static int elantech_get_resolution_v4(struct psmouse *psmouse,
  * Asus UX31               0x361f00        20, 15, 0e      clickpad
  * Asus UX32VD             0x361f02        00, 15, 0e      clickpad
  * Avatar AVIU-145A2       0x361f00        ?               clickpad
+ * Fujitsu CELSIUS H760    0x570f02        40, 14, 0c      3 hw buttons (**)
+ * Fujitsu CELSIUS H780    0x5d0f02        41, 16, 0d      3 hw buttons (**)
  * Fujitsu LIFEBOOK E544   0x470f00        d0, 12, 09      2 hw buttons
  * Fujitsu LIFEBOOK E546   0x470f00        50, 12, 09      2 hw buttons
  * Fujitsu LIFEBOOK E547   0x470f00        50, 12, 09      2 hw buttons
@@ -1171,6 +1173,13 @@ static const struct dmi_system_id elantech_dmi_has_middle_button[] = {
 			DMI_MATCH(DMI_PRODUCT_NAME, "CELSIUS H760"),
 		},
 	},
+	{
+		/* Fujitsu H780 also has a middle button */
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "CELSIUS H780"),
+		},
+	},
 #endif
 	{ }
 };
diff --git a/drivers/input/serio/ps2-gpio.c b/drivers/input/serio/ps2-gpio.c
index c62cceb97bb1..5e8d8384aa2a 100644
--- a/drivers/input/serio/ps2-gpio.c
+++ b/drivers/input/serio/ps2-gpio.c
@@ -76,6 +76,7 @@ static void ps2_gpio_close(struct serio *serio)
 {
 	struct ps2_gpio_data *drvdata = serio->port_data;
 
+	flush_delayed_work(&drvdata->tx_work);
 	disable_irq(drvdata->irq);
 }