Re: [linux-pm] swsusp regression [Was: 2.6.17-mm1]

[Alan Stern <stern@rowland.harvard.edu>]

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

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