On Tue, 20 Oct 2009, [UTF-8] Ozan Ã?aÄ?layan wrote: > > Hi. First the backtrace: > > > > [ 149.510272] uvcvideo: Found UVC 1.00 device BisonCam, NB Pro (5986:0203) > > [ 149.515017] input: BisonCam, NB Pro as > > /devices/pci0000:00/0000:00:1d.7/usb1/1-5/1-5:1.0/input/input10 > > [ 149.515588] usbcore: registered new interface driver uvcvideo > > [ 149.516247] USB Video Class driver (v0.1.0) > > [ 149.658012] Pid: 1137, comm: hald-probe-vide Tainted: G C > > 2.6.31.4-128 #2 > > [ 149.658012] Call Trace: > > [ 149.658012] [<c0373f62>] handshake_on_error_set_halt+0x36/0x65 > > [ 149.658012] [<c0374073>] enable_periodic+0x32/0x72 > > [ 149.658012] [<c03741c9>] qh_link_periodic+0x116/0x11e > > [ 149.658012] [<c0374665>] qh_schedule+0x120/0x12c > > [ 149.658012] [<c03775d0>] intr_submit+0x8c/0x124 > > [ 149.658012] [<c0377d2a>] ehci_urb_enqueue+0x7a/0xa5 ... > > [ 149.658012] ehci_hcd 0000:00:1d.7: force halt; handhake f7c66024 > > 00004000 00000000 -> -110 > > > > And the usbmon trace during "modprobe uvcvideo" can be found at: > > > > http://cekirdek.pardus.org.tr/~ozan/ivir/logs/usbmon.trace.bad > > > > I also manage to not reproduce the problem so it's kinda racy. You can > > find good/bad dmesg/usbmon traces at: > > > > http://cekirdek.pardus.org.tr/~ozan/ivir/logs > > > ping! in case it's got lost between high traffic :) Yes, sorry, my email client tends to hide messages with non-ASCII characters in the From: address. It's unforunate. :-( I can't tell exactly what's wrong, but I've got a hunch that the patch below might help. If it doesn't, send another dmesg log but this time with CONFIG_USB_DEBUG enabled in the kernel. Alan Stern Index: usb-2.6/drivers/usb/host/ehci-q.c =================================================================== --- usb-2.6.orig/drivers/usb/host/ehci-q.c +++ usb-2.6/drivers/usb/host/ehci-q.c @@ -818,6 +818,9 @@ qh_make ( dbg ("intr period %d uframes, NYET!", urb->interval); goto done; + } else if (qh->period > ehci->periodic_size) { + qh->period = ehci->periodic_size; + urb->interval = qh->period << 3; } } else { int think_time; @@ -840,6 +843,10 @@ qh_make ( usb_calc_bus_time (urb->dev->speed, is_input, 0, max_packet (maxp))); qh->period = urb->interval; + if (qh->period > ehci->periodic_size) { + qh->period = ehci->periodic_size; + urb->interval = qh->period; + } } } -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
