diff options
Diffstat (limited to 'drivers/media/video/uvc/uvc_video.c')
| -rw-r--r-- | drivers/media/video/uvc/uvc_video.c | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/drivers/media/video/uvc/uvc_video.c b/drivers/media/video/uvc/uvc_video.c index ffd1158628b6..b015e8e5e8b0 100644 --- a/drivers/media/video/uvc/uvc_video.c +++ b/drivers/media/video/uvc/uvc_video.c @@ -790,8 +790,12 @@ static void uvc_free_urb_buffers(struct uvc_streaming *stream) for (i = 0; i < UVC_URBS; ++i) { if (stream->urb_buffer[i]) { +#ifndef CONFIG_DMA_NONCOHERENT usb_free_coherent(stream->dev->udev, stream->urb_size, stream->urb_buffer[i], stream->urb_dma[i]); +#else + kfree(stream->urb_buffer[i]); +#endif stream->urb_buffer[i] = NULL; } } @@ -831,9 +835,14 @@ static int uvc_alloc_urb_buffers(struct uvc_streaming *stream, for (; npackets > 1; npackets /= 2) { for (i = 0; i < UVC_URBS; ++i) { stream->urb_size = psize * npackets; +#ifndef CONFIG_DMA_NONCOHERENT stream->urb_buffer[i] = usb_alloc_coherent( stream->dev->udev, stream->urb_size, gfp_flags | __GFP_NOWARN, &stream->urb_dma[i]); +#else + stream->urb_buffer[i] = + kmalloc(stream->urb_size, gfp_flags | __GFP_NOWARN); +#endif if (!stream->urb_buffer[i]) { uvc_free_urb_buffers(stream); break; @@ -908,10 +917,14 @@ static int uvc_init_video_isoc(struct uvc_streaming *stream, urb->context = stream; urb->pipe = usb_rcvisocpipe(stream->dev->udev, ep->desc.bEndpointAddress); +#ifndef CONFIG_DMA_NONCOHERENT urb->transfer_flags = URB_ISO_ASAP | URB_NO_TRANSFER_DMA_MAP; + urb->transfer_dma = stream->urb_dma[i]; +#else + urb->transfer_flags = URB_ISO_ASAP; +#endif urb->interval = ep->desc.bInterval; urb->transfer_buffer = stream->urb_buffer[i]; - urb->transfer_dma = stream->urb_dma[i]; urb->complete = uvc_video_complete; urb->number_of_packets = npackets; urb->transfer_buffer_length = size; @@ -969,8 +982,10 @@ static int uvc_init_video_bulk(struct uvc_streaming *stream, usb_fill_bulk_urb(urb, stream->dev->udev, pipe, stream->urb_buffer[i], size, uvc_video_complete, stream); +#ifndef CONFIG_DMA_NONCOHERENT urb->transfer_flags = URB_NO_TRANSFER_DMA_MAP; urb->transfer_dma = stream->urb_dma[i]; +#endif stream->urb[i] = urb; } |