media: coda: assert bitstream mutex is locked in coda_fill_bitstream

coda_fill_bitstream() must be called under the bitstream mutex.
Signed-off-by: NPhilipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: NHans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: NMauro Carvalho Chehab <mchehab@kernel.org>

drivers/media/platform/chips-media/coda-bit.c

@@ -326,6 +326,8 @@ void coda_fill_bitstream(struct coda_ctx *ctx, struct list_head *buffer_list)
 	struct coda_buffer_meta *meta;
 	u32 start;
 
+	lockdep_assert_held(&ctx->bitstream_mutex);
+
 	if (ctx->bit_stream_param & CODA_BIT_STREAM_END_FLAG)
 		return;