diff --git a/drivers/media/usb/uvc/uvc_metadata.c b/drivers/media/usb/uvc/uvc_metadata.c index 0a906ae3f971..9de8aba1229e 100644 --- a/drivers/media/usb/uvc/uvc_metadata.c +++ b/drivers/media/usb/uvc/uvc_metadata.c @@ -50,7 +50,7 @@ static int uvc_meta_v4l2_get_format(struct file *file, void *priv, return -EINVAL; fmt->dataformat = stream->meta.format; - fmt->buffersize = UVC_METADATA_BUF_SIZE; + fmt->buffersize = stream->meta.buffersize; return 0; } @@ -63,6 +63,7 @@ static int uvc_meta_v4l2_try_format(struct file *file, void *priv, struct uvc_device *dev = stream->dev; struct v4l2_meta_format *fmt = &format->fmt.meta; u32 fmeta = V4L2_META_FMT_UVC; + u32 buffersize; if (format->type != vfh->vdev->queue->type) return -EINVAL; @@ -74,10 +75,12 @@ static int uvc_meta_v4l2_try_format(struct file *file, void *priv, } } + buffersize = max(UVC_METADATA_BUF_MIN_SIZE, fmt->buffersize); + memset(fmt, 0, sizeof(*fmt)); fmt->dataformat = fmeta; - fmt->buffersize = UVC_METADATA_BUF_SIZE; + fmt->buffersize = buffersize; return 0; } @@ -103,6 +106,7 @@ static int uvc_meta_v4l2_set_format(struct file *file, void *priv, return -EBUSY; stream->meta.format = fmt->dataformat; + stream->meta.buffersize = fmt->buffersize; return 0; } @@ -229,6 +233,7 @@ int uvc_meta_register(struct uvc_streaming *stream) struct uvc_video_queue *queue = &stream->meta.queue; stream->meta.format = V4L2_META_FMT_UVC; + stream->meta.buffersize = UVC_METADATA_BUF_MIN_SIZE; return uvc_register_video_device(dev, stream, queue, V4L2_BUF_TYPE_META_CAPTURE, diff --git a/drivers/media/usb/uvc/uvc_queue.c b/drivers/media/usb/uvc/uvc_queue.c index 68ed2883edb2..89206f761006 100644 --- a/drivers/media/usb/uvc/uvc_queue.c +++ b/drivers/media/usb/uvc/uvc_queue.c @@ -83,7 +83,7 @@ static int uvc_queue_setup(struct vb2_queue *vq, switch (vq->type) { case V4L2_BUF_TYPE_META_CAPTURE: - size = UVC_METADATA_BUF_SIZE; + size = stream->meta.buffersize; break; default: diff --git a/drivers/media/usb/uvc/uvcvideo.h b/drivers/media/usb/uvc/uvcvideo.h index 9b4849fda12f..5ba698d2a23d 100644 --- a/drivers/media/usb/uvc/uvcvideo.h +++ b/drivers/media/usb/uvc/uvcvideo.h @@ -409,7 +409,7 @@ struct uvc_stats_stream { unsigned int max_sof; /* Maximum STC.SOF value */ }; -#define UVC_METADATA_BUF_SIZE 10240 +#define UVC_METADATA_BUF_MIN_SIZE 10240 /** * struct uvc_copy_op: Context structure to schedule asynchronous memcpy @@ -482,6 +482,7 @@ struct uvc_streaming { struct { struct uvc_video_queue queue; u32 format; + u32 buffersize; } meta; /* Context data used by the bulk completion handler. */