[PATCH] media: rockchip: rkcif: Fix error handling for media_entity_remote_source_pad_unique()

[Chen Ni]

The media_entity_remote_source_pad_unique() function returns an error
pointer on failure, not NULL. Fix the check to use IS_ERR() and return
PTR_ERR() to correctly handle allocation failures.

Fixes: 501802e2ad51 ("media: rockchip: rkcif: add abstraction for dma blocks")
Signed-off-by: Chen Ni <nichen at iscas.ac.cn>
---
 drivers/media/platform/rockchip/rkcif/rkcif-stream.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/media/platform/rockchip/rkcif/rkcif-stream.c b/drivers/media/platform/rockchip/rkcif/rkcif-stream.c
index 3130d420ad55..542aa877919d 100644
--- a/drivers/media/platform/rockchip/rkcif/rkcif-stream.c
+++ b/drivers/media/platform/rockchip/rkcif/rkcif-stream.c
@@ -466,7 +466,7 @@ static int rkcif_stream_link_validate(struct media_link *link)
 	struct rkcif_stream *stream = to_rkcif_stream(vdev);
 	int ret = -EINVAL;
 
-	if (!media_entity_remote_source_pad_unique(link->sink->entity))
+	if (IS_ERR(media_entity_remote_source_pad_unique(link->sink->entity)))
 		return -ENOTCONN;
 
 	sd = media_entity_to_v4l2_subdev(link->source->entity);
-- 
2.25.1