Re: [PATCH v2 0/4] OMAP: DMA: mstandby mode and runtime pm support

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"G, Manjunath Kondaiah" <manjugk@xxxxxx> writes:

> On Thu, Mar 17, 2011 at 02:29:18PM -0700, Kevin Hilman wrote:
>> "G, Manjunath Kondaiah" <manjugk@xxxxxx> writes:
>> 
>> > Patch series to support mstandby mode handling and enabling runtime PM
>> > support for DMA driver.
>> 
>> I still have the same problems as with the previous revision: 
>> 
>> 
>> This is still not runtime-suspending when I use my DMA test in linking
>> mode.
>> 
>> If I put a large enough period between transfers, it should autosuspend
>> during transfers.  It seems to do auto-suspend and resume once, but then
>> it never suspends again.
>> 
>> I tested with my dmatest module[1], and loaded with:
>> 
>>   # insmod ./dmatest.ko linking=1 forever=1 forever_period=1024
>> 
>> Not only does it not auto-suspend between transfers (which I expected),
>> it also doesn't suspend after removing the module which stops all active
>> channels.
>
> Tested again on 2.6.38 with patches pulled from patchworks and for me,
> the same test case seems to be passing. Here is the log:
> http://pastebin.com/ccEmTZS5
>
> The above test case is executed on blaze and same result is observed
> with other OMAP2+ boards also.

Can you try again with dmatest loaded without 'debug=1'

What's strange is that I noticed it worked with debug=1 also, but didn't
with debug disabled.

I *think* it's a bug in my test, which I fixed, but can you try the
above before pulling a new version of my test?

Kevin


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