From 02c25c003405776084d440c30041a33836b74710 Mon Sep 17 00:00:00 2001
From: Steve Longerbeam <slongerbeam@gmail.com>
Date: Wed, 26 Jun 2019 14:52:25 -0400
Subject: [PATCH] media: staging/imx: Fix NULL deref in find_pipeline_entity()
Git-commit: 02c25c003405776084d440c30041a33836b74710
Patch-mainline: v5.4-rc1
References: git-fixes

Fix a cut&paste error in find_pipeline_entity(). The start entity must be
passed to media_entity_to_video_device() in find_pipeline_entity(), not
pad->entity. The pad is only put to use later, after determining the start
entity is not the entity being searched for.

Fixes: 3ef46bc97ca2 ("media: staging/imx: Improve pipeline searching")
Reported-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Steve Longerbeam <slongerbeam@gmail.com>
Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Acked-by: Takashi Iwai <tiwai@suse.de>

---
 drivers/staging/media/imx/imx-media-utils.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/staging/media/imx/imx-media-utils.c b/drivers/staging/media/imx/imx-media-utils.c
index 9088c4b720a3..4cc6a7462ae2 100644
--- a/drivers/staging/media/imx/imx-media-utils.c
+++ b/drivers/staging/media/imx/imx-media-utils.c
@@ -841,7 +841,7 @@ find_pipeline_entity(struct media_entity *start, u32 grp_id,
 		if (sd->grp_id & grp_id)
 			return &sd->entity;
 	} else if (buftype && is_media_entity_v4l2_video_device(start)) {
-		vfd = media_entity_to_video_device(pad->entity);
+		vfd = media_entity_to_video_device(start);
 		if (buftype == vfd->queue->type)
 			return &vfd->entity;
 	}
-- 
2.16.4