[linux-pm] ASUS K53E fails to suspend if ehci_hcd is loaded

[Andrey Rahmatullin]

On Fri, Jun 17, 2011 at 11:17:01AM -0400, Alan Stern wrote:
> Okay, then you must have seen all the verbose PM debugging messages.  
> Which means the last suspend callback to run was for the 1-1 device
> rather than the usb1 device, right?
> 
> If so, it means I was looking in the wrong place.  1-1 is the internal
> rate-matching hub, whereas usb1 is the EHCI controller's root hub.
> 
> Can you add your own dev_info() statements to the hub_quiesce() and 
> hub_suspend() routines in drivers/usb/core/hub.c, or should I send a 
> patch?
After "usb 1-1.1: usb suspend" I see a full "start hub_suspend,
hub_quiesce, rest of hub_suspend" path for 1-1:1.0 (I've used &intf->dev
in suspend and hub->intfdev in quiesce as a 1st arg for dev_info()), then
"usb 1-1: usb suspend" and after that it hangs.

-- 
WBR, wRAR
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