[PATCH] Input: uinput - Fix returning EPOLLOUT from uinput_poll

From: Marcel Holtmann
Date: Tue Dec 03 2019 - 21:50:24 EST


Always return EPOLLOUT from uinput_poll to allow polling /dev/uinput
for writable state.

Signed-off-by: Marcel Holtmann <marcel@xxxxxxxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx
---
drivers/input/misc/uinput.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/input/misc/uinput.c b/drivers/input/misc/uinput.c
index 84051f20b18a..fd253781be71 100644
--- a/drivers/input/misc/uinput.c
+++ b/drivers/input/misc/uinput.c
@@ -695,7 +695,7 @@ static __poll_t uinput_poll(struct file *file, poll_table *wait)
if (udev->head != udev->tail)
return EPOLLIN | EPOLLRDNORM;

- return 0;
+ return EPOLLOUT | EPOLLWRNORM;
}

static int uinput_release(struct inode *inode, struct file *file)
--
2.23.0