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HID: uhid: Fix sending events with invalid data

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This was detected because events with invalid types were arriving
to userspace.

The code before this patch would only work for the first event in the
queue (when uhid->tail is 0).

Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@openbossa.org>
Reviewed-by: David Herrmann <dh.herrmann@googlemail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
This commit is contained in:
Vinicius Costa Gomes 2012-07-14 18:59:25 -03:00 committed by Jiri Kosina
parent 1a8b294ce6
commit adefb69b1b
1 changed files with 1 additions and 1 deletions
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2
drivers/hid/uhid.c
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@ -465,7 +465,7 @@ static ssize_t uhid_char_read(struct file *file, char __user *buffer,
goto try_again;
} else {
len = min(count, sizeof(**uhid->outq));
if (copy_to_user(buffer, &uhid->outq[uhid->tail], len)) {
if (copy_to_user(buffer, uhid->outq[uhid->tail], len)) {
ret = -EFAULT;
} else {
kfree(uhid->outq[uhid->tail]);