On Fri, 13 Oct 2006, matthieu castet wrote: > Hi, > > Alan Stern wrote: > > On Wed, 4 Oct 2006, matthieu castet wrote: > > > > > >>>By the way, the error messages in your log indicated some sort of problem > >>>with your EHCI USB controller. That's why the unexpected disconnections > >>>kept happening. > >>> > >>>It might even be a hardware problem. If it is, the patch won't fix it > >>>(obviously) although it may allow the driver's disconnect routine to run > >>>properly. > >> > >>With this patch I got the same errors (the usb-core still hang and > >>doesn't call driver disconnect). > > > > > > Probably the hardware errors in the controller were too severe for the > > driver to handle. > > > It seems to work fine with ohci.
That would be consistent with your EHCI controller having a hardware bug, wouldn't it? Since the OHCI controller doesn't have the bug, it works okay. > Via ehci (1106:3104) host usb controller is quite commun. I am supprised > that others people don't report problem with it. Maybe their controllers don't have the bug. That is, maybe it's a real malfunction rather than a design flaw. > Matthieu. > > > PS : AFAIK on 2.6.18 a VIA IRQ fixup was added for ehci > (http://www.kernel.org/diff/diffview.cgi?file=%2Fpub%2Flinux%2Fkernel%2Fv2.6%2Fpatch-2.6.18.bz2;z=4623). > Could it have cause such problem ? I don't know. Alan Stern ------------------------------------------------------------------------- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 _______________________________________________ linux-usb-devel@lists.sourceforge.net To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
