Re: SDHC card affected by preemption model in 2.6.35

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On Sun, Feb 20, 2011 at 10:42 PM, S, Venkatraman <svenkatr@xxxxxx> wrote:
>
> On Fri, Feb 18, 2011 at 6:27 PM, Thomas Weber <weber@xxxxxxxxxxxxx> wrote:
>>
>> Hello Mathieu, hello Venkat,
>>
>> I hope it is not too old and you remember this:
>> >
>> >   This provides a good 100ms window for delays due to scheduling variations.
>> > I have to still find out which section is sensitive to it.
>> > Regards,
>> > Venkat.
>> > --
>>
>> We have a custom omap3 board and use kernel 2.6.37-rc8.  We have the
>> problem that we sometimes cannot mount our rootfs from sd-card. This
>> happens only when CONFIG_PREEMPT=y. When using CONFIG_PREEMPT_NONE or
>> enabling CONFIG_MMC_DEBUG everything works fine.
>>
>> The "100 ms patch" doesn't work for us. Do you found other solution(s)?
>>

No - I was working on some other things lately - I'll check this out this week.
What type of card are you using ?
Regards,
Venkat.
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