Re: [linux-pm] ehci_hcd related S3 lockup on ASUS laptops, again

[Andrey Rahmatullin <wrar@xxxxxxxxx>]

On Wed, May 02, 2012 at 01:42:08PM -0400, Alan Stern wrote:
> Hmmm.  What about runtime suspend?
> 
> Still using the new patch without my patch, if you write "auto" to the
> power/control file under the two controller sysfs directories, at least
> one of them should go into suspend.  You can check this by seeing what
> the corresponding power/runtime_status file says (there might be
> something in the dmesg log too).  When this happens, what does "lspci
> -v" show for the controller's state?
root@sabine:~# echo auto> /sys/bus/pci/devices/0000\:00\:1d.0/power/control
root@sabine:~# echo auto> /sys/bus/pci/devices/0000\:00\:1a.0/power/control
root@sabine:~# cat /sys/bus/pci/devices/0000\:00\:1d.0/power/runtime_status
suspended
root@sabine:~# cat /sys/bus/pci/devices/0000\:00\:1a.0/power/runtime_status
suspended
root@sabine:~# lspci -v
00:1a.0 USB controller: Intel Corporation 6 Series/C200 Series Chipset Family USB Enhanced Host Controller #2 (rev 05) (prog-if 20 [EHCI])
        Subsystem: ASUSTeK Computer Inc. Device 1147
        Flags: medium devsel, IRQ 16
        Memory at dfe08000 (32-bit, non-prefetchable) [size=1K]
        Capabilities: [50] Power Management version 2
        Capabilities: [58] Debug port: BAR=1 offset=00a0
        Capabilities: [98] PCI Advanced Features
        Kernel driver in use: ehci_hcd
00:1d.0 USB controller: Intel Corporation 6 Series/C200 Series Chipset Family USB Enhanced Host Controller #1 (rev 05) (prog-if 20 [EHCI])
        Subsystem: ASUSTeK Computer Inc. Device 1147
        Flags: medium devsel, IRQ 23
        Memory at dfe07000 (32-bit, non-prefetchable) [size=1K]
        Capabilities: [50] Power Management version 2
        Capabilities: [58] Debug port: BAR=1 offset=00a0
        Capabilities: [98] PCI Advanced Features
        Kernel driver in use: ehci_hcd

-- 
WBR, wRAR

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