On Wed, Nov 07, 2007 at 11:46:07AM -0700, Dan Williams wrote:
> From: Haavard Skinnemoen <[email protected]>
>
> When a DMA device is unregistered, its reference count is decremented
> twice for each channel: Once dma_class_dev_release() and once in
> dma_chan_cleanup(). This may result in the DMA device driver's
> remove() function completing before all channels have been cleaned
> up, causing lots of use-after-free fun.
>
> Fix it by incrementing the device's reference count twice for each
> channel during registration.
>
> Signed-off-by: Haavard Skinnemoen <[email protected]>
> [[email protected]: kill unnecessary client refcounting]
> Signed-off-by: Dan Williams <[email protected]>
> Signed-off-by: Shannon Nelson <[email protected]>
> Cc: [email protected]
I don't see this in Linus's tree yet, right?
When it goes in, can you resend it to the [email protected] people?
thanks,
greg k-h
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