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

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: (57 commits)
  Input: adp5588-keypad - fix NULL dereference in adp5588_gpio_add()
  Input: cy8ctmg110 - capacitive touchscreen support
  Input: keyboard - also match braille-only keyboards
  Input: adp5588-keys - export unused GPIO pins
  Input: xpad - add product ID for Hori Fighting Stick EX2
  Input: adxl34x - fix leak and use after free
  Input: samsung-keypad - Add samsung keypad driver
  Input: i8042 - reset keyboard controller wehen resuming from S2R
  Input: synaptics - set min/max for finger width
  Input: synaptics - only report width on hardware that supports it
  Input: evdev - signal that device is writable in evdev_poll()
  Input: mousedev - signal that device is writable in mousedev_poll()
  Input: change input handlers to use bool when possible
  Input: document the MT event slot protocol
  Input: introduce MT event slots
  Input: usbtouchscreen - implement reset_resume
  Input: usbtouchscreen - implement runtime power management
  Input: usbtouchscreen - implement basic suspend/resume
  Input: Add ATMEL QT602240 touchscreen driver
  Input: fix signedness warning in input_set_keycode()
  ...

1 files changed, 41 insertions, 24 deletions

diff --git a/drivers/input/serio/i8042.c b/drivers/input/serio/i8042.c
index 6440a8f5568..258b98b9d7c 100644
--- a/drivers/input/serio/i8042.c
+++ b/drivers/input/serio/i8042.c
@@ -861,9 +861,6 @@ static int i8042_controller_selftest(void)
 	unsigned char param;
 	int i = 0;
 
-	if (!i8042_reset)
-		return 0;
-
 	/*
 	 * We try this 5 times; on some really fragile systems this does not
 	 * take the first time...
@@ -1020,7 +1017,8 @@ static void i8042_controller_reset(void)
  * Reset the controller if requested.
  */
 
-	i8042_controller_selftest();
+	if (i8042_reset)
+		i8042_controller_selftest();
 
 /*
  * Restore the original control register setting.
@@ -1094,23 +1092,11 @@ static void i8042_dritek_enable(void)
 #ifdef CONFIG_PM
 
 /*
- * Here we try to restore the original BIOS settings to avoid
- * upsetting it.
- */
-
-static int i8042_pm_reset(struct device *dev)
-{
-	i8042_controller_reset();
-
-	return 0;
-}
-
-/*
  * Here we try to reset everything back to a state we had
  * before suspending.
  */
 
-static int i8042_pm_restore(struct device *dev)
+static int i8042_controller_resume(bool force_reset)
 {
 	int error;
 
@@ -1118,9 +1104,11 @@ static int i8042_pm_restore(struct device *dev)
 	if (error)
 		return error;
 
-	error = i8042_controller_selftest();
-	if (error)
-		return error;
+	if (i8042_reset || force_reset) {
+		error = i8042_controller_selftest();
+		if (error)
+			return error;
+	}
 
 /*
  * Restore original CTR value and disable all ports
@@ -1162,6 +1150,28 @@ static int i8042_pm_restore(struct device *dev)
 	return 0;
 }
 
+/*
+ * Here we try to restore the original BIOS settings to avoid
+ * upsetting it.
+ */
+
+static int i8042_pm_reset(struct device *dev)
+{
+	i8042_controller_reset();
+
+	return 0;
+}
+
+static int i8042_pm_resume(struct device *dev)
+{
+	/*
+	 * On resume from S2R we always try to reset the controller
+	 * to bring it in a sane state. (In case of S2D we expect
+	 * BIOS to reset the controller for us.)
+	 */
+	return i8042_controller_resume(true);
+}
+
 static int i8042_pm_thaw(struct device *dev)
 {
 	i8042_interrupt(0, NULL);
@@ -1169,9 +1179,14 @@ static int i8042_pm_thaw(struct device *dev)
 	return 0;
 }
 
+static int i8042_pm_restore(struct device *dev)
+{
+	return i8042_controller_resume(false);
+}
+
 static const struct dev_pm_ops i8042_pm_ops = {
 	.suspend	= i8042_pm_reset,
-	.resume		= i8042_pm_restore,
+	.resume		= i8042_pm_resume,
 	.thaw		= i8042_pm_thaw,
 	.poweroff	= i8042_pm_reset,
 	.restore	= i8042_pm_restore,
@@ -1389,9 +1404,11 @@ static int __init i8042_probe(struct platform_device *dev)
 
 	i8042_platform_device = dev;
 
-	error = i8042_controller_selftest();
-	if (error)
-		return error;
+	if (i8042_reset) {
+		error = i8042_controller_selftest();
+		if (error)
+			return error;
+	}
 
 	error = i8042_controller_init();
 	if (error)