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authorLaurent Pinchart <laurent.pinchart@ideasonboard.com>2009-08-06 11:41:17 -0300
committerMauro Carvalho Chehab <mchehab@redhat.com>2009-12-05 18:40:34 -0200
commit663a419203cc9690d16502be509ffb8acc40552a (patch)
tree33d99c3d006b67830891fcca37d3164f17b4bfbb /drivers/media/video/uvc/uvc_video.c
parentf4eabafeb3ea41801260fba624cbf2da971d19f8 (diff)
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.c18
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 a6e41d12b221..bb9fed669363 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)