HID: uhid: Fix sending events with invalid data

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 коммит произвёл Jiri Kosina
Родитель 1a8b294ce6
Коммит adefb69b1b
1 изменённых файлов: 1 добавлений и 1 удалений

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@ -465,7 +465,7 @@ try_again:
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]);