Messages in this thread | | | Date | Thu, 21 Sep 2017 22:51:26 +0530 | From | Vinod Koul <> | Subject | Re: [PATCH v2] dmaengine: edma: Align the memcpy acnt array size with the transfer |
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On Mon, Sep 18, 2017 at 11:16:26AM +0300, Peter Ujfalusi wrote: > Memory to Memory transfers does not have any special alignment needs > regarding to acnt array size, but if one of the areas are in memory mapped > regions (like PCIe memory), we need to make sure that the acnt array size > is aligned with the mem copy parameters. > > Before "dmaengine: edma: Optimize memcpy operation" change the memcpy was set > up in a different way: acnt == number of bytes in a word based on > __ffs((src | dest | len), bcnt and ccnt for looping the necessary number of > words to comlete the trasnfer. > > Instead of reverting the commit we can fix it to make sure that the ACNT size > is aligned to the traswnfer.
Applied, thanks
-- ~Vinod
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