linux-kernel - [PATCH 3.16 238/245] [media] media: Fix media_open() to clear filp->private

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Message-ID: <lsq.1587683028.811496222@decadent.org.uk>
Date:   Fri, 24 Apr 2020 00:07:45 +0100
From:   Ben Hutchings <ben@...adent.org.uk>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
CC:     akpm@...ux-foundation.org, Denis Kirjanov <kda@...ux-powerpc.org>,
        "Mauro Carvalho Chehab" <mchehab@....samsung.com>,
        "Shuah Khan" <shuahkh@....samsung.com>,
        "Sakari Ailus" <sakari.ailus@...ux.intel.com>
Subject: [PATCH 3.16 238/245] [media] media: Fix media_open() to clear
 filp->private_data in error leg

3.16.83-rc1 review patch.  If anyone has any objections, please let me know.

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

From: Shuah Khan <shuahkh@....samsung.com>

commit d40ec6fdb0b03b7be4c7923a3da0e46bf943740a upstream.

Fix media_open() to clear filp->private_data when file open
fails.

Signed-off-by: Shuah Khan <shuahkh@....samsung.com>
Acked-by: Sakari Ailus <sakari.ailus@...ux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@....samsung.com>
Signed-off-by: Ben Hutchings <ben@...adent.org.uk>
---
 drivers/media/media-devnode.c | 1 +
 1 file changed, 1 insertion(+)

--- a/drivers/media/media-devnode.c
+++ b/drivers/media/media-devnode.c
@@ -181,6 +181,7 @@ static int media_open(struct inode *inod
 		ret = mdev->fops->open(filp);
 		if (ret) {
 			put_device(&mdev->dev);
+			filp->private_data = NULL;
 			return ret;
 		}
 	}