Re: swsusp regression [Was: 2.6.17-mm1]

Alan Stern
2006-06-22T21:09:43Z

On Thu, 22 Jun 2006, Jiri Slaby wrote:

> > ages. The "bogus requests" are attempts by the user to suspend a USB
> > device (by writing to /sys/devices/.../power/state) without first
> > suspending all its children and interfaces.
> >
> > (This can't happen when doing a global suspend because the PM core
> > iterates through the entire device tree. It matters only for "runtime" or
> > "selective" suspend.)
>
> But everything I did is:
> echo reboot > /sys/power/disk
> echo disk > /sys/power/state
>
> No writing anywhere else.

You misunderstood. I meant that attempts to suspend a USB device without
first suspending all its children and interfaces can't happen when doing a
global suspend. That's still true.

Your problem occurred because even though the PM core did _attempt_ to
suspend the new children added by Greg's patch, it didn't _succeed_
because the patch did not provide suspend or resume methods.

Alan Stern