From: Marcel Holtmann <marcel@xxxxxxxxxxxx>
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@xxxxxxxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Jiri Kosina <jkosina@xxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
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 = {
