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dmaengine: at_xdmac: fix residue corruption
An unexpected value of CUBC can lead to a corrupted residue. A more complex sequence is needed to detect an inaccurate value for NCA or CUBC. Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com> Fixes: e1f7c9e ("dmaengine: at_xdmac: creation of the atmel eXtended DMA Controller driver") Cc: stable@vger.kernel.org #v4.1 and later Reviewed-by: Nicolas Ferre <nicolas.ferre@atmel.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
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Ludovic Desroches
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Vinod Koul
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May 30, 2016
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