Emeric, On Wed, Jul 11, 2012 at 1:20 AM, Emeric Vigier <[email protected]> wrote: > Ming Lei, > > Delay between URB submission and call-back for a given URB is huge indeed... > My hardware (panda rev A3) is fine: linaro-12.05 (kernel-3.4) and > linaro-11.09's ethernet works just fine.
Yes, so it may be caused by ehci driver or some ehci-omap low level configuration. But I have no idea about the root cause since there are very few information about the problem. Maybe you need to use a USB analyzer to trace the bus traffic if you have it. Or one easier way is to run 'git bisect' on upstream kernel or stable-tree to look for the commit which fixes the problem. Thanks, -- Ming Lei -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/709245 Title: ARM SMP scheduler performance bug To manage notifications about this bug go to: https://bugs.launchpad.net/linaro-ubuntu/+bug/709245/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
