On Fri, 5 Jan 2007, Mark Watson wrote: > OK, this looks like ehci_endpoint_disable indeed... Think its time to > buy a new motherboard I think. Or are there any workarounds? e.g. use > the modules and just unload/reload them on devices vanishing.
No simple workarounds. Once this happens there's no way to recover other than rebooting. At least, not until someone manages to figure out how to fix things in ehci-hcd. > [54081.952215] khubd D C0336210 0 11 5 > 13 8 (L-TLB) > [54081.952219] c14cbdc8 00000046 00000002 c0336210 00000001 > c14cbda0 ef72288e 0000312f > [54081.952223] 0000000a c14b5580 ef815f02 0000312f 00000127 > c14b5690 c14cbddc 00000000 > [54081.952228] 21c8fb0f 00000000 c14cbddc 033613d7 ddcb7100 > c14cbdfc c0336210 c14cbddc > [54081.952233] Call Trace: > [54081.952235] [<c0336210>] schedule_timeout+0x50/0xc0 > [54081.952238] [<c033629a>] schedule_timeout_uninterruptible+0x1a/0x20 > [54081.952241] [<c02c4a70>] ehci_endpoint_disable+0x130/0x150 > [54081.952246] [<c02b2d27>] hcd_endpoint_disable+0x67/0x180 > > Many thanks for the help. How about adding a check for this chipset > and, if detected, display a big fat warning kprintf message to expect > USB to break if using EHCI? As far as I know, the problem has nothing to do with the chipset. It affects VIA controllers regardless of what's on the motherboard. On the other hand, there is a simple fix: Buy a PCI USB controller card with a non-VIA controller. NEC chips are well thought of. Alan Stern ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys - and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV _______________________________________________ linux-usb-devel@lists.sourceforge.net To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
