linux-kernel - [PATCH 4.4 13/65] media: Fix media_open() to clear filp->private

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Date:   Tue, 26 May 2020 20:52:32 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Shuah Khan <shuahkh@....samsung.com>,
        Sakari Ailus <sakari.ailus@...ux.intel.com>,
        Mauro Carvalho Chehab <mchehab@....samsung.com>,
        Ben Hutchings <ben.hutchings@...ethink.co.uk>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 4.4 13/65] media: Fix media_open() to clear filp->private_data in error leg

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.hutchings@...ethink.co.uk>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/media/media-devnode.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/media/media-devnode.c b/drivers/media/media-devnode.c
index ebf9626e5ae5..a8cb52dc8c4f 100644
--- a/drivers/media/media-devnode.c
+++ b/drivers/media/media-devnode.c
@@ -181,6 +181,7 @@ static int media_open(struct inode *inode, struct file *filp)
 		ret = mdev->fops->open(filp);
 		if (ret) {
 			put_device(&mdev->dev);
+			filp->private_data = NULL;
 			return ret;
 		}
 	}
-- 
2.25.1