From be54e7461ffdc5809b67d2aeefc1ddc9a91470c7 Mon Sep 17 00:00:00 2001
From: Marcel Holtmann <marcel@holtmann.org>
Date: Wed, 4 Dec 2019 03:43:55 +0100
Subject: [PATCH] HID: uhid: Fix returning EPOLLOUT from uhid_char_poll
Git-commit: be54e7461ffdc5809b67d2aeefc1ddc9a91470c7
Patch-mainline: v5.5-rc6
References: bsc#1051510

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>
Acked-by: Takashi Iwai <tiwai@suse.de>

---
 drivers/hid/uhid.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/hid/uhid.c
+++ b/drivers/hid/uhid.c
@@ -773,7 +773,7 @@ static unsigned int uhid_char_poll(struc
 	if (uhid->head != uhid->tail)
 		return POLLIN | POLLRDNORM;
 
-	return 0;
+	return POLLOUT | POLLWRNORM;
 }
 
 static const struct file_operations uhid_fops = {