v4l_vb2q_enable_media_source 302 drivers/media/v4l2-core/v4l2-mc.c int v4l_vb2q_enable_media_source(struct vb2_queue *q) v4l_vb2q_enable_media_source 142 include/media/v4l2-mc.h static inline int v4l_vb2q_enable_media_source(struct vb2_queue *q)