From: Hans Verkuil Date: Fri, 13 Dec 2013 16:13:43 +0000 (-0300) Subject: [media] vb2: don't set index, don't start streaming for write() X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=c108e660f9196a4cebea79fbd650ed6850934fcc;p=linux-beck.git [media] vb2: don't set index, don't start streaming for write() Two fixes: - there is no need to set the index when calling dqbuf: dqbuf will overwrite it. - __vb2_init_fileio already starts streaming for write(), so there is no need to do it again in __vb2_perform_fileio. It can never have worked anyway: either __vb2_init_fileio succeeds in starting streaming or it is never going to happen. Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- diff --git a/drivers/media/v4l2-core/videobuf2-core.c b/drivers/media/v4l2-core/videobuf2-core.c index 0d5b84f3b570..2552c4626826 100644 --- a/drivers/media/v4l2-core/videobuf2-core.c +++ b/drivers/media/v4l2-core/videobuf2-core.c @@ -2445,7 +2445,6 @@ static size_t __vb2_perform_fileio(struct vb2_queue *q, char __user *data, size_ memset(&fileio->b, 0, sizeof(fileio->b)); fileio->b.type = q->type; fileio->b.memory = q->memory; - fileio->b.index = index; ret = vb2_internal_dqbuf(q, &fileio->b, nonblock); dprintk(5, "file io: vb2_dqbuf result: %d\n", ret); if (ret) @@ -2527,15 +2526,6 @@ static size_t __vb2_perform_fileio(struct vb2_queue *q, char __user *data, size_ * Switch to the next buffer */ fileio->index = (index + 1) % q->num_buffers; - - /* - * Start streaming if required. - */ - if (!read && !q->streaming) { - ret = vb2_internal_streamon(q, q->type); - if (ret) - return ret; - } } /*