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Input: evdev - signal that device is writable in evdev_poll() 

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
This commit is contained in:
Dmitry Torokhov 2010-07-15 23:28:42 -07:00
parent 4d4bf995ea
commit c18fb1396e
1 changed files with 7 additions and 2 deletions
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9
drivers/input/evdev.c
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@ -403,10 +403,15 @@ static unsigned int evdev_poll(struct file *file, poll_table *wait)
{
struct evdev_client *client = file->private_data;
struct evdev *evdev = client->evdev;
unsigned int mask;
poll_wait(file, &evdev->wait, wait);
return ((client->head == client->tail) ? 0 : (POLLIN | POLLRDNORM)) |
(evdev->exist ? 0 : (POLLHUP | POLLERR));
mask = evdev->exist ? POLLOUT | POLLWRNORM : POLLHUP | POLLERR;
if (client->head != client->tail)
mask |= POLLIN | POLLRDNORM;
return mask;
}
#ifdef CONFIG_COMPAT