Re: Hang on Suspend to RAM with 2.6.36-rc4

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Laine Walker-Avina <lwalkera@xxxxxxxxx> writes:

> On Wed, Sep 22, 2010 at 3:21 PM, Laine Walker-Avina <lwalkera@xxxxxxxxx> wrote:
>> On Tue, Sep 14, 2010 at 4:02 PM, Kevin Hilman
>> <khilman@xxxxxxxxxxxxxxxxxxx> wrote:
>>> Laine Walker-Avina <lwalkera@xxxxxxxxx> writes:
>>>
>>>> I just pulled the latest changes today from the linux-omap git tree,
>>>> and something appears to have broken suspend to RAM on my OMAP3503
>>>> board.
>>>
>>> Is this on the master branch?  What defconfig?  When was this last
>>> working for you?  -rc3?
>> Yes, on the master branch. I'm using my own config. It was working on
>> 2.6.35 or so. I tried backporting my board patches to 2.6.36 and it
>> fails there too now for some reason. It might be the SD card, I'll
>> have to find another one and try it out.
>>>
>>> Looks like you may have your rootfs on MMC.  Do you have
>>> CONFIG_MMC_UNSAFE_RESUME=y in your .config?
>> No

[...]

>
> This appears to be caused by commit 4c2ef25f (mmc: fix all hangs
> related to mmc/sd card insert/removal during suspend/resume). Enabling
> CONFIG_MMC_UNSAFE_RESUME seems to fix it. 

Good.

> Ideally, it would be nice to have the root file-system on a mmc
> regardless of whether or not it's removable or not.

You'll have to take that one up with the MMC core.

I'm sure they would welcome patches to fix it. ;)

Kevin

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