Re: suspend broken on 3.5-rc1?

[Rajendra Nayak <rnayak@ti.com>]

On Friday 08 June 2012 06:46 PM, Rajendra Nayak wrote:
> On Friday 08 June 2012 06:35 PM, Tero Kristo wrote:
>> On Fri, 2012-06-08 at 17:55 +0530, Rajendra Nayak wrote:
>>> On Friday 08 June 2012 04:26 PM, Tony Lindgren wrote:
>>>> * Rajendra Nayak<rnayak@ti.com> [120608 03:40]:
>>>>> Hi,
>>>>>
>>>>> I don;t seem to be able to get suspend to work on 3.5-rc1 on
>>>>> my 4430 panda. I am not sure if its UART wakeups that are
>>>>> an issue or suspend itself is broken.
>>>>> Is there anything more than setting
>>>>> '/sys/devices/platform/omap_uart.2/tty/ttyO2/power/wakeup'
>>>>> to 'enabled' that I need to do to get UART to be wakeup capable?
>>>>>
>>>>> 3.4 major works just fine for me.
>>>>
>>>> Can you try with the fixes branch that Olof just merged?
>>>
>>> I tried merging the fixes branch on 3.5-rc1 as well as latest
>>> mainline and both didn't work.
>>>
>>>> If it's the UART wake-up events, there's a patch that should
>>>> help.
>>>>
>>>> Tony
>>>
>>
>> The patch referenced here helps:
>>
>> http://www.mail-archive.com/linux-omap@vger.kernel.org/msg69596.html
>>
>> DSS crashes during wakeup from suspend.
>
> great, thats what I found too with no_console_suspend, didn't know
> a fix already exists. Thanks.

The patch above seems to fix suspend on 4430, but on my 4460 ES1.1 
panda, I still see its broken..

# echo enabled > /sys/devices/platform/omap_uart.2/tty/ttyO2/power/wakeup
# echo mem > /sys/power/state
[    6.549285] PM: Syncing filesystems ... done.
[    6.581695] Freezing user space processes ... (elapsed 0.02 seconds) 
done.
[    6.612823] Freezing remaining freezable tasks ... (elapsed 0.02 
seconds) done.
[    6.674102] PM: suspend of devices complete after 51.391 msecs
[    6.682006] PM: late suspend of devices complete after 1.739 msecs
[    6.691650] PM: noirq suspend of devices complete after 3.143 msecs
[    6.698272] Disabling non-boot CPUs ...
[    6.705993] CPU1: shutdown
[    7.298797] Successfully put all powerdomains to target state
[    7.304992] Enabling non-boot CPUs ... *<---- hang*

..anyone knows of any more fixes going around?

regards,
Rajendra