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SubjectRe: [PATCH] dmaengine: fix regression introduced by d6103085dfd83c13db65c3bd7e182f021d77c541
Guennadi Liakhovetski wrote:
> chan is an index variable, used to loop over a list of channels, and here
> it is used _after_ the loop, in which case it doesn't point to a DMA
> channel struct anymore. Dereferencing it leads to a corruption of a random
> memory location, which in my case was a pointer inside a clock struct. Fix
> it by using a local variable pointing to the DMA device.
> Signed-off-by: Guennadi Liakhovetski <>
> ---
> Guys, this was a _real_ bad joke, cost me almost a day, and that patch has
> been reviewed by two persons...
> <rant>
> So far 2.6.29(-next) has been very bad for me, regressions all over the
> place, lots of wasted time hunting them down:-(
> </rant>


Thanks for testing the 'next' branch and finding this before it hit
mainline. I will fold this change into the existing commit with a
[ fix bad usage of 'chan' in dma_async_device_register]


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