[lkml]   [2006]   [Apr]   [3]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: [linux-usb-devel] Problems with USB setup with Linux 2.6.16
Joshua Kwan wrote:
> On 04/02/2006 07:09 PM, Alan Stern wrote:
>> If you were to continue looking farther down in the log, you would find
>> that ehci-hcd sees all those devices. Those that can run at high speed
>> continue using the EHCI controller. For those that can't, the switch is
>> reset and they get reconnected to their UHCI controller.
> That makes sense - that is indeed what happens when it DOES work (i.e.
> with 2.6.15), but the fact is that they don't come back in 2.6.16. I
> will try building ehci-hcd in and see what happens.

Around 2.6.13, I noticed that EHCI stopped working after a suspend/resume
(to/from RAM) cycle. So I updated my suspend script to unload/reload EHCI
each time, which fixed the problem for me. My script still does that.

Dunno if it's fixed in mainline or not.
Does unloading/reloading EHCI help you?

rmmod ehci_hcd ; modprobe ehci_hcd

To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to
More majordomo info at
Please read the FAQ at

 \ /
  Last update: 2006-04-03 18:15    [W:0.028 / U:0.508 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site