linux-kernel - [PATCH 3.13.y-ckt 21/85] iio: event: Remove negative error code from iio_event

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Message-Id: <1445376941-7046-22-git-send-email-kamal@canonical.com>
Date:	Tue, 20 Oct 2015 14:34:37 -0700
From:	Kamal Mostafa <kamal@...onical.com>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org,
	kernel-team@...ts.ubuntu.com
Cc:	Cristina Opriceana <cristina.opriceana@...il.com>,
	Jonathan Cameron <jic23@...nel.org>,
	Kamal Mostafa <kamal@...onical.com>
Subject: [PATCH 3.13.y-ckt 21/85] iio: event: Remove negative error code from iio_event_poll

3.13.11-ckt28 -stable review patch.  If anyone has any objections, please let me know.

------------------

From: Cristina Opriceana <cristina.opriceana@...il.com>

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@...il.com>
Signed-off-by: Jonathan Cameron <jic23@...nel.org>
Signed-off-by: Kamal Mostafa <kamal@...onical.com>
---
 drivers/iio/industrialio-event.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/iio/industrialio-event.c b/drivers/iio/industrialio-event.c
index 7c35689..2a55ee1 100644
--- a/drivers/iio/industrialio-event.c
+++ b/drivers/iio/industrialio-event.c
@@ -77,7 +77,7 @@ 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);
 
-- 
1.9.1

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