diff options
| author |   Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2012-04-20 22:33:08 -0700 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2012-04-20 23:11:01 -0700 |
| commit | 486c8aba39e5f194519cd5c0e85e5d1de8b74b03 (patch) | |
| tree | f82d9745cd40b94dfa4b3107e7c33c5224d69c77 /drivers/input/keyboard | |
| parent | Input: tc3589x-keypad - remove unnecessary checks (diff) | |
| download | linux-dev-486c8aba39e5f194519cd5c0e85e5d1de8b74b03.tar.xz linux-dev-486c8aba39e5f194519cd5c0e85e5d1de8b74b03.zip | |
Input: serio_raw - ensure we don't block in non-blocking read
Avoid calling wait_event_interruptible() if client requested non-blocking
read, since it is not guaranteed that another thread will not consume
event after we checked if serio_raw->head != serio_raw->tail.
Also ensure we do not return 0 but keep waiting instead in blocking case,
when another thread steals "our" byte.
Reviewed-by: David Herrmann <dh.herrmann@googlemail.com>
Reviewed-by: Che-Liang Chiou <clchiou@chromium.org>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Diffstat (limited to 'drivers/input/keyboard')
0 files changed, 0 insertions, 0 deletions