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| author | Laurent Pinchart <laurent.pinchart@ideasonboard.com> | 2009-08-06 11:41:17 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2009-12-05 18:40:34 -0200 |
| commit | 663a419203cc9690d16502be509ffb8acc40552a (patch) | |
| tree | 33d99c3d006b67830891fcca37d3164f17b4bfbb /drivers/media/video/uvc/uvc_video.c | |
| parent | f4eabafeb3ea41801260fba624cbf2da971d19f8 (diff) | |
| download | op-kernel-dev-663a419203cc9690d16502be509ffb8acc40552a.zip op-kernel-dev-663a419203cc9690d16502be509ffb8acc40552a.tar.gz | |
V4L/DVB (13149): uvcvideo: Add a new UVC_TRACE_VIDEO trace level
Use the trace level for messages related to video URB buffers allocation and
alternate setting selection.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/video/uvc/uvc_video.c')
| -rw-r--r-- | drivers/media/video/uvc/uvc_video.c | 18 |
1 files changed, 14 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) |
