On 12/03/2011 01:51 AM, Sarah Sharp wrote: > On Fri, Dec 02, 2011 at 04:18:11PM +0000, KrishnaMohan Bandi wrote: >> I have attached the dmesg from when the camera is first plugged in and >> also the complete 'lspci -vvv' and 'lsusb -v' output in other >> attachments. >> >> Using IDS ueye camera .... >> >> [16809.701217] usb 9-3: USB disconnect, address 2 >> [16811.552121] usb 9-3: new high speed USB device using xhci_hcd and address 0 >> [16811.570947] usb 9-3: configuration #1 chosen from 1 choice >> [16840.646204] xhci_hcd 0000:08:00.0: WARN: Stalled endpoint >> [17145.555235] xhci_hcd 0000:08:00.0: ERROR no room on ep ring >> [17145.555250] usb 9-3: usbfs: usb_submit_urb returned -12 >> [17212.760318] xhci_hcd 0000:08:00.0: ERROR no room on ep ring >> [17212.760330] usb 9-3: usbfs: usb_submit_urb returned -12 >> >> Using PointGrey Firefly MV camera >> >> [17484.292165] usb 9-3: new high speed USB device using xhci_hcd and address 0 >> [17484.316807] xhci_hcd 0000:08:00.0: WARN: short transfer on control ep >> [17484.319798] xhci_hcd 0000:08:00.0: WARN: short transfer on control ep >> [17484.322779] xhci_hcd 0000:08:00.0: WARN: short transfer on control ep >> [17484.325779] xhci_hcd 0000:08:00.0: WARN: short transfer on control ep >> [17484.326435] usb 9-3: configuration #1 chosen from 1 choice >> [17503.849677] xhci_hcd 0000:08:00.0: ERROR no room on ep ring > > Ok, yeah, you need dynamic ring expansion for your cameras. 2.6.36 uses > 8 ring segments, and you're runnning 2.6.38, so I guess your cameras > need more than 8 segments. > > Andiry has been working on a patchset for ring expansion, but I have not > seen an update in a couple weeks. Andiry, how is the ring expansion > code progressing? > I have been quite busy in the past couple of weeks... I'll try to submit a v3 this week. Thanks, Andiry -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
