linux-kernel - [PATCH v2] media: uvcvideo: Fix uvc dev reference management

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Message-Id: <20171013031338.8064-1-jeffy.chen@rock-chips.com>
Date:   Fri, 13 Oct 2017 11:13:38 +0800
From:   Jeffy Chen <jeffy.chen@...k-chips.com>
To:     linux-kernel@...r.kernel.org, mchehab@...pensource.com,
        laurent.pinchart@...asonboard.com, hans.verkuil@...co.com
Cc:     Jeffy Chen <jeffy.chen@...k-chips.com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        linux-media@...r.kernel.org
Subject: [PATCH v2] media: uvcvideo: Fix uvc dev reference management

Remove the kref_get() in uvc_register_video(), which is not needed as
the kref_init() already initializes refcount to 1 for us.

Fixes: 9d15cd958c17 ("media: uvcvideo: Convert from using an atomic variable to a reference count")
Signed-off-by: Jeffy Chen <jeffy.chen@...k-chips.com>
---

Changes in v2:
Rewrite commit message.

 drivers/media/usb/uvc/uvc_driver.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/drivers/media/usb/uvc/uvc_driver.c b/drivers/media/usb/uvc/uvc_driver.c
index 6d22b22cb35b..dd6106411eb0 100644
--- a/drivers/media/usb/uvc/uvc_driver.c
+++ b/drivers/media/usb/uvc/uvc_driver.c
@@ -1939,7 +1939,6 @@ static int uvc_register_video(struct uvc_device *dev,
 	else
 		stream->chain->caps |= V4L2_CAP_VIDEO_OUTPUT;
 
-	kref_get(&dev->ref);
 	return 0;
 }
 
-- 
2.11.0