From: Marcel Holtmann marcel@holtmann.org
commit be54e7461ffdc5809b67d2aeefc1ddc9a91470c7 upstream.
Always return EPOLLOUT from uhid_char_poll to allow polling /dev/uhid for writable state.
Fixes: 1f9dec1e0164 ("HID: uhid: allow poll()'ing on uhid devices") Signed-off-by: Marcel Holtmann marcel@holtmann.org Cc: stable@vger.kernel.org Signed-off-by: Jiri Kosina jkosina@suse.cz Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- drivers/hid/uhid.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/hid/uhid.c +++ b/drivers/hid/uhid.c @@ -775,7 +775,7 @@ static __poll_t uhid_char_poll(struct fi if (uhid->head != uhid->tail) return EPOLLIN | EPOLLRDNORM;
- return 0; + return EPOLLOUT | EPOLLWRNORM; }
static const struct file_operations uhid_fops = {