4 files changed, 18 insertions, 10 deletions
diff --git a/drivers/input/evdev.c b/drivers/input/evdev.c
index 76457d50bc34..afc166fcc3d9 100644
--- a/drivers/input/evdev.c
+++ b/drivers/input/evdev.c
@@ -386,7 +386,7 @@ static ssize_t evdev_read(struct file *file, char __user *buffer,
 	struct evdev_client *client = file->private_data;
 	struct evdev *evdev = client->evdev;
 	struct input_event event;
-	int retval;
+	int retval = 0;
 
 	if (count < input_event_size())
 		return -EINVAL;
diff --git a/drivers/input/keyboard/twl4030_keypad.c b/drivers/input/keyboard/twl4030_keypad.c
index a588578037eb..67bec14e8b96 100644
--- a/drivers/input/keyboard/twl4030_keypad.c
+++ b/drivers/input/keyboard/twl4030_keypad.c
@@ -34,7 +34,6 @@
 #include <linux/i2c/twl.h>
 #include <linux/slab.h>
 
-
 /*
  * The TWL4030 family chips include a keypad controller that supports
  * up to an 8x8 switch matrix.  The controller can issue system wakeup
@@ -302,7 +301,7 @@ static int __devinit twl4030_kp_program(struct twl4030_keypad *kp)
 	if (twl4030_kpwrite_u8(kp, i, KEYP_DEB) < 0)
 		return -EIO;
 
-	/* Set timeout period to 100 ms */
+	/* Set timeout period to 200 ms */
 	i = KEYP_PERIOD_US(200000, PTV_PRESCALER);
 	if (twl4030_kpwrite_u8(kp, (i & 0xFF), KEYP_TIMEOUT_L) < 0)
 		return -EIO;
@@ -466,4 +465,3 @@ MODULE_AUTHOR("Texas Instruments");
 MODULE_DESCRIPTION("TWL4030 Keypad Driver");
 MODULE_LICENSE("GPL");
 MODULE_ALIAS("platform:twl4030_keypad");
-
diff --git a/drivers/input/serio/i8042-x86ia64io.h b/drivers/input/serio/i8042-x86ia64io.h
index b4cfc6c8be89..5ec774d6c82b 100644
--- a/drivers/input/serio/i8042-x86ia64io.h
+++ b/drivers/input/serio/i8042-x86ia64io.h
@@ -512,6 +512,13 @@ static const struct dmi_system_id __initconst i8042_dmi_reset_table[] = {
 			DMI_MATCH(DMI_PRODUCT_NAME, "Vostro 1720"),
 		},
 	},
+	{
+		/* Lenovo Ideapad U455 */
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "20046"),
+		},
+	},
 	{ }
 };
 
diff --git a/drivers/input/serio/serio_raw.c b/drivers/input/serio/serio_raw.c
index 8250299fd64f..4494233d331a 100644
--- a/drivers/input/serio/serio_raw.c
+++ b/drivers/input/serio/serio_raw.c
@@ -164,7 +164,8 @@ static ssize_t serio_raw_read(struct file *file, char __user *buffer,
 	struct serio_raw_client *client = file->private_data;
 	struct serio_raw *serio_raw = client->serio_raw;
 	char uninitialized_var(c);
-	ssize_t retval = 0;
+	ssize_t read = 0;
+	int retval;
 
 	if (serio_raw->dead)
 		return -ENODEV;
@@ -180,13 +181,15 @@ static ssize_t serio_raw_read(struct file *file, char __user *buffer,
 	if (serio_raw->dead)
 		return -ENODEV;
 
-	while (retval < count && serio_raw_fetch_byte(serio_raw, &c)) {
-		if (put_user(c, buffer++))
-			return -EFAULT;
-		retval++;
+	while (read < count && serio_raw_fetch_byte(serio_raw, &c)) {
+		if (put_user(c, buffer++)) {
+			retval = -EFAULT;
+			break;
+		}
+		read++;
 	}
 
-	return retval;
+	return read ?: retval;
 }
 
 static ssize_t serio_raw_write(struct file *file, const char __user *buffer,