On Tue, 24 Jul 2007, Pete Zaitcev wrote: > On Tue, 24 Jul 2007 15:44:23 -0400 (EDT), Alan Stern <[EMAIL PROTECTED]> > wrote: > > > http://bugzilla.kernel.org/show_bug.cgi?id=8535 > > > > contains logs suggestive of problems with EHCI split-interrupt > > handling. See in particular comment #33; the usbmon log in comment #32 > > contains a line in which a low-speed interrupt URB returns with status > > equal to 0 and actual_length set to -4. > > Nicolas sent me a trace out of band which had a similar entry: > ffff8100057f6100 1467276128 C Ii:2:004:1 0:8 -4 > > > Obviously this should never happen. Can anybody offer tips on where to > > go searching through the driver code for a solution? > > I'm going to double-check that usbmon is not deceiving you. It sure > looks totally bogus. Maybe I mixed up fields in a union somewhere.
Maybe. Stuart Hayes has just added comment #42 in which he suggests this problem may be caused by the cpufreq adjustment patch he wrote. Stuart, could your patch cause a 4-byte low-speed interrupt transfer to return an actual_length of -4? Alan Stern ------------------------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now >> http://get.splunk.com/ _______________________________________________ linux-usb-devel@lists.sourceforge.net To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
