From: Jiasheng Jiang <jiasheng@iscas.ac.cn>
Date: Wed, 8 Feb 2023 07:14:42 +0000 (+0100)
Subject: media: bdisp: Add missing check for create_workqueue
X-Git-Tag: v6.1.37~1862
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=c2e55481731b0e8c96f30f661e430aa884fbd354;p=platform%2Fkernel%2Flinux-starfive.git

media: bdisp: Add missing check for create_workqueue

[ Upstream commit 2371adeab717d8fe32144a84f3491a03c5838cfb ]

Add the check for the return value of the create_workqueue
in order to avoid NULL pointer dereference.

Fixes: 28ffeebbb7bd ("[media] bdisp: 2D blitter driver using v4l2 mem2mem framework")
Signed-off-by: Jiasheng Jiang <jiasheng@iscas.ac.cn>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---

diff --git a/drivers/media/platform/st/sti/bdisp/bdisp-v4l2.c b/drivers/media/platform/st/sti/bdisp/bdisp-v4l2.c
index dd74cc4..080da25 100644
--- a/drivers/media/platform/st/sti/bdisp/bdisp-v4l2.c
+++ b/drivers/media/platform/st/sti/bdisp/bdisp-v4l2.c
@@ -1309,6 +1309,8 @@ static int bdisp_probe(struct platform_device *pdev)
 	init_waitqueue_head(&bdisp->irq_queue);
 	INIT_DELAYED_WORK(&bdisp->timeout_work, bdisp_irq_timeout);
 	bdisp->work_queue = create_workqueue(BDISP_NAME);
+	if (!bdisp->work_queue)
+		return -ENOMEM;
 
 	spin_lock_init(&bdisp->slock);
 	mutex_init(&bdisp->lock);