diff options
| -rw-r--r-- | drivers/media/common/videobuf2/videobuf2-core.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/drivers/media/common/videobuf2/videobuf2-core.c b/drivers/media/common/videobuf2/videobuf2-core.c index 8c1df829745b..40d89f29fa33 100644 --- a/drivers/media/common/videobuf2/videobuf2-core.c +++ b/drivers/media/common/videobuf2/videobuf2-core.c @@ -2735,9 +2735,14 @@ static int __vb2_init_fileio(struct vb2_queue *q, int read) return -EBUSY; /* - * Start with count 1, driver can increase it in queue_setup() + * Start with q->min_buffers_needed + 1, driver can increase it in + * queue_setup() + * + * 'min_buffers_needed' buffers need to be queued up before you + * can start streaming, plus 1 for userspace (or in this case, + * kernelspace) processing. */ - count = 1; + count = max(2, q->min_buffers_needed + 1); dprintk(q, 3, "setting up file io: mode %s, count %d, read_once %d, write_immediately %d\n", (read) ? "read" : "write", count, q->fileio_read_once, |