dmaengine: dw: fix byte order of hw descriptor fields

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If the DMA controller uses a different byte order than the host CPU,
the hardware linked list descriptor fields need to be byte-swapped.

This patch makes the driver write these fields using the same byte
order it uses for mmio accesses to the DMA engine. I do not know
if this is guaranteed to always be correct.

Signed-off-by: Mans Rullgard <mans@mansr.com>
Acked-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>

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Mans Rullgard 2016-03-18 16:24:43 +02:00 • committed by Vinod Koul

parent bb3450ad0e

commit df1f3a2305

2 changed files with 87 additions and 68 deletions

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119

drivers/dma/dw/core.c

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32

drivers/dma/dw/regs.h

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