diff options
| -rw-r--r-- | drivers/media/video/uvc/uvc_video.c | 18 | ||||
| -rw-r--r-- | drivers/media/video/uvc/uvcvideo.h | 1 |
2 files changed, 15 insertions, 4 deletions
diff --git a/drivers/media/video/uvc/uvc_video.c b/drivers/media/video/uvc/uvc_video.c index a6e41d1..bb9fed6 100644 --- a/drivers/media/video/uvc/uvc_video.c +++ b/drivers/media/video/uvc/uvc_video.c @@ -781,10 +781,15 @@ static int uvc_alloc_urb_buffers(struct uvc_streaming *stream, if (i == UVC_URBS) { stream->urb_size = psize * npackets; + uvc_trace(UVC_TRACE_VIDEO, "Allocated %u URB buffers " + "of %ux%u bytes each.\n", UVC_URBS, npackets, + psize); return npackets; } } + uvc_trace(UVC_TRACE_VIDEO, "Failed to allocate URB buffers (%u bytes " + "per packet).\n", psize); return 0; } @@ -935,10 +940,12 @@ static int uvc_init_video(struct uvc_streaming *stream, gfp_t gfp_flags) bandwidth = stream->ctrl.dwMaxPayloadTransferSize; if (bandwidth == 0) { - uvc_printk(KERN_WARNING, "device %s requested null " - "bandwidth, defaulting to lowest.\n", - stream->dev->name); + uvc_trace(UVC_TRACE_VIDEO, "Device requested null " + "bandwidth, defaulting to lowest.\n"); bandwidth = 1; + } else { + uvc_trace(UVC_TRACE_VIDEO, "Device requested %u " + "B/frame bandwidth.\n", bandwidth); } for (i = 0; i < intf->num_altsetting; ++i) { @@ -955,8 +962,11 @@ static int uvc_init_video(struct uvc_streaming *stream, gfp_t gfp_flags) break; } - if (i >= intf->num_altsetting) + if (i >= intf->num_altsetting) { + uvc_trace(UVC_TRACE_VIDEO, "No fast enough alt setting " + "for requested bandwidth.\n"); return -EIO; + } ret = usb_set_interface(stream->dev->udev, intfnum, i); if (ret < 0) diff --git a/drivers/media/video/uvc/uvcvideo.h b/drivers/media/video/uvc/uvcvideo.h index e7958aa..f5c40c0 100644 --- a/drivers/media/video/uvc/uvcvideo.h +++ b/drivers/media/video/uvc/uvcvideo.h @@ -533,6 +533,7 @@ struct uvc_driver { #define UVC_TRACE_FRAME (1 << 7) #define UVC_TRACE_SUSPEND (1 << 8) #define UVC_TRACE_STATUS (1 << 9) +#define UVC_TRACE_VIDEO (1 << 10) #define UVC_WARN_MINMAX 0 #define UVC_WARN_PROBE_DEF 1 |