From: Cristina Opriceana <cristina.opriceana@gmail.com>
Date: Mon, 3 Aug 2015 10:00:47 +0000 (+0300)
Subject: iio: event: Remove negative error code from iio_event_poll
X-Git-Tag: v4.2.1~101
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=63fa3d22fea64e85103db8248e2fb0b32b756d2a;p=thirdparty%2Fkernel%2Fstable.git

iio: event: Remove negative error code from iio_event_poll

commit 41d903c00051d8f31c98a8136edbac67e6f8688f upstream.

Negative return values are not supported by iio_event_poll since
its return type is unsigned int.

Fixes: f18e7a068a0a3 ("iio: Return -ENODEV for file operations if the device has been unregistered")

Signed-off-by: Cristina Opriceana <cristina.opriceana@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/iio/industrialio-event.c b/drivers/iio/industrialio-event.c
index 894d8137c4cfa..52d4fcb0de1dc 100644
--- a/drivers/iio/industrialio-event.c
+++ b/drivers/iio/industrialio-event.c
@@ -84,7 +84,7 @@ static unsigned int iio_event_poll(struct file *filep,
 	unsigned int events = 0;
 
 	if (!indio_dev->info)
-		return -ENODEV;
+		return events;
 
 	poll_wait(filep, &ev_int->wait, wait);