linux-kernel - [PATCH 31/31] media: au0828 change to check media device unregister progress state

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Message-Id: <eed3343dc1c690e8c7e656d1cc162777d73fc62b.1452105878.git.shuahkh@osg.samsung.com>
Date:	Wed,  6 Jan 2016 13:27:20 -0700
From:	Shuah Khan <shuahkh@....samsung.com>
To:	mchehab@....samsung.com, tiwai@...e.com, clemens@...isch.de,
	hans.verkuil@...co.com, laurent.pinchart@...asonboard.com,
	sakari.ailus@...ux.intel.com, javier@....samsung.com
Cc:	Shuah Khan <shuahkh@....samsung.com>, pawel@...iak.com,
	m.szyprowski@...sung.com, kyungmin.park@...sung.com,
	perex@...ex.cz, arnd@...db.de, dan.carpenter@...cle.com,
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	linux-api@...r.kernel.org, alsa-devel@...a-project.org
Subject: [PATCH 31/31] media: au0828 change to check media device unregister progress state

Change au0828_unregister_media_device() to check media
device media device unregister is in progress and avoid
calling media_device_unregister() and other cleanup done
in au0828_unregister_media_device().

Signed-off-by: Shuah Khan <shuahkh@....samsung.com>
---
 drivers/media/usb/au0828/au0828-core.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/media/usb/au0828/au0828-core.c b/drivers/media/usb/au0828/au0828-core.c
index 886fb28..de357a2 100644
--- a/drivers/media/usb/au0828/au0828-core.c
+++ b/drivers/media/usb/au0828/au0828-core.c
@@ -136,7 +136,9 @@ static void au0828_unregister_media_device(struct au0828_dev *dev)
 
 #ifdef CONFIG_MEDIA_CONTROLLER
 	if (dev->media_dev &&
-		media_devnode_is_registered(&dev->media_dev->devnode)) {
+		media_devnode_is_registered(&dev->media_dev->devnode) &&
+		!media_device_is_unregister_in_progress(dev->media_dev)) {
+
 		media_device_unregister(dev->media_dev);
 		media_device_cleanup(dev->media_dev);
 		dev->media_dev = NULL;
-- 
2.5.0

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