diff options
Diffstat (limited to 'drivers/media/usb/usbtv/usbtv-video.c')
| -rw-r--r-- | drivers/media/usb/usbtv/usbtv-video.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/drivers/media/usb/usbtv/usbtv-video.c b/drivers/media/usb/usbtv/usbtv-video.c index 9d3525f65..08fb0f2da 100644 --- a/drivers/media/usb/usbtv/usbtv-video.c +++ b/drivers/media/usb/usbtv/usbtv-video.c @@ -599,15 +599,18 @@ static struct v4l2_file_operations usbtv_fops = { }; static int usbtv_queue_setup(struct vb2_queue *vq, - const struct v4l2_format *v4l_fmt, unsigned int *nbuffers, + const struct v4l2_format *fmt, unsigned int *nbuffers, unsigned int *nplanes, unsigned int sizes[], void *alloc_ctxs[]) { struct usbtv *usbtv = vb2_get_drv_priv(vq); + unsigned size = USBTV_CHUNK * usbtv->n_chunks * 2 * sizeof(u32); - if (*nbuffers < 2) - *nbuffers = 2; + if (vq->num_buffers + *nbuffers < 2) + *nbuffers = 2 - vq->num_buffers; *nplanes = 1; - sizes[0] = USBTV_CHUNK * usbtv->n_chunks * 2 * sizeof(u32); + if (fmt && fmt->fmt.pix.sizeimage < size) + return -EINVAL; + sizes[0] = fmt ? fmt->fmt.pix.sizeimage : size; return 0; } @@ -635,6 +638,7 @@ static int usbtv_start_streaming(struct vb2_queue *vq, unsigned int count) if (usbtv->udev == NULL) return -ENODEV; + usbtv->sequence = 0; return usbtv_start(usbtv); } |