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| author | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2011-06-18 02:50:11 -0700 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2011-06-18 02:54:02 -0700 |
| commit | da40b0b6b4d3a81c5051fe6ae0544c48c13261c4 (patch) | |
| tree | c54325034ac30742fa6d0a82bc49a5396e8e66f2 /drivers/input/evdev.c | |
| parent | 8c127f0717b438e6abc3d92d4ae248c4224b9dcb (diff) | |
Input: evdev - try to wake up readers only if we have full packet
We should only wake waiters on the event device when we actually post
an EV_SYN/SYN_REPORT to the queue. Otherwise we end up making waiting
threads runnable only to go right back to sleep because the device
still isn't readable.
Reported-by: Jeffrey Brown <jeffbrown@android.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Diffstat (limited to 'drivers/input/evdev.c')
| -rw-r--r-- | drivers/input/evdev.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/input/evdev.c b/drivers/input/evdev.c index be0921ef6b52..4cf25347b015 100644 --- a/drivers/input/evdev.c +++ b/drivers/input/evdev.c @@ -111,7 +111,8 @@ static void evdev_event(struct input_handle *handle, rcu_read_unlock(); - wake_up_interruptible(&evdev->wait); + if (type == EV_SYN && code == SYN_REPORT) + wake_up_interruptible(&evdev->wait); } static int evdev_fasync(int fd, struct file *file, int on) |