[PATCH v2, 2/2] media: mediatek: vcodec: make sure pointer isn't NULL before used

[Irui Wang]

CERT-C Expression check:
Dereferencing buf, which is known to be NULL, check buf is not NULL
before used.

Signed-off-by: Irui Wang <irui.wang at mediatek.com>
---
 drivers/media/platform/mediatek/vcodec/mtk_vcodec_enc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/media/platform/mediatek/vcodec/mtk_vcodec_enc.c b/drivers/media/platform/mediatek/vcodec/mtk_vcodec_enc.c
index d65800a3b89d..db65e77bd373 100644
--- a/drivers/media/platform/mediatek/vcodec/mtk_vcodec_enc.c
+++ b/drivers/media/platform/mediatek/vcodec/mtk_vcodec_enc.c
@@ -943,7 +943,7 @@ static int vb2ops_venc_start_streaming(struct vb2_queue *q, unsigned int count)
 		 * FIXME: This check is not needed as only active buffers
 		 * can be marked as done.
 		 */
-		if (buf->state == VB2_BUF_STATE_ACTIVE) {
+		if (buf && buf->state == VB2_BUF_STATE_ACTIVE) {
 			mtk_v4l2_debug(0, "[%d] id=%d, type=%d, %d -> VB2_BUF_STATE_QUEUED",
 					ctx->id, i, q->type,
 					(int)buf->state);
-- 
2.18.0