From 0c62fbf6009fa338bd28bdcb14efbfc5fc0c579b Mon Sep 17 00:00:00 2001 From: Dmitry Torokhov Date: Tue, 10 Jan 2012 00:45:12 -0800 Subject: [PATCH] Input: serio_raw - really signal HUP upon disconnect Commit 8c1c10d5706bbb3b41cb4a5578339d67d3eeffc2 attempted to signal POLLHUP | POLLERR condition when polling disconnected device, unfortunately it did not do it quite correctly. Reported-by: Che-Liang Chiou Signed-off-by: Dmitry Torokhov --- drivers/input/serio/serio_raw.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/input/serio/serio_raw.c b/drivers/input/serio/serio_raw.c index ca78a890c75d..f6c83e9ecff6 100644 --- a/drivers/input/serio/serio_raw.c +++ b/drivers/input/serio/serio_raw.c @@ -237,9 +237,9 @@ static unsigned int serio_raw_poll(struct file *file, poll_table *wait) mask = serio_raw->dead ? POLLHUP | POLLERR : POLLOUT | POLLWRNORM; if (serio_raw->head != serio_raw->tail) - return POLLIN | POLLRDNORM; + mask |= POLLIN | POLLRDNORM; - return 0; + return mask; } static const struct file_operations serio_raw_fops = { -- 2.20.1