| From d046a6d2244510e81fa5f210e44186d57433336a 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 |
| |
| 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: Paul Gortmaker <paul.gortmaker@windriver.com> |
| |
| diff --git a/drivers/hid/uhid.c b/drivers/hid/uhid.c |
| index fa0cc0899827..935c3d0a3b63 100644 |
| --- a/drivers/hid/uhid.c |
| +++ b/drivers/hid/uhid.c |
| @@ -772,7 +772,7 @@ static __poll_t uhid_char_poll(struct file *file, poll_table *wait) |
| if (uhid->head != uhid->tail) |
| return EPOLLIN | EPOLLRDNORM; |
| |
| - return 0; |
| + return EPOLLOUT | EPOLLWRNORM; |
| } |
| |
| static const struct file_operations uhid_fops = { |
| -- |
| 2.7.4 |
| |
