[PATCH] input: push down scancode negative checking

The getkeycode/setkeycode calls should be able to accept "negative" values.

The HID layer has some scan codes of the form 0xffbc0000 for logitech
devices, and they get ignored by these calls. I pushed the checking
into the input_default_* functions since they do need non-negative
values.

I also corrected a typo in the comment for input_set_keycode

Signed-off-by: Daniel Walker <dwalker <at> mvista.com>
---
 drivers/input/input.c |   12 +++---------
 1 files changed, 3 insertions(+), 9 deletions(-)

diff --git a/drivers/input/input.c b/drivers/input/input.c
index 27006fc..e1af21f 100644
--- a/drivers/input/input.c
+++ b/drivers/input/input.c
@@ -526,7 +526,7 @@ static int input_default_getkeycode(struct input_dev *dev,
 	if (!dev->keycodesize)
 		return -EINVAL;

-	if (scancode >= dev->keycodemax)
+	if (scancode < 0 || scancode >= dev->keycodemax)
 		return -EINVAL;

 	*keycode = input_fetch_keycode(dev, scancode);
@@ -540,7 +540,7 @@ static int input_default_setkeycode(struct input_dev *dev,
 	int old_keycode;
 	int i;