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dmaengine: dw_dma: fix endianess for DT xlate function 

As reported by Wu Fengguang's build robot tracking sparse warnings, the
dma_spec arguments in the dw_dma_xlate are already byte swapped on
little-endian platforms and must not get swapped again. This code is
currently not used anywhere, but will be used in Linux 3.10 when the
ARM SPEAr platform starts using the generic DMA DT binding.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
This commit is contained in:
Arnd Bergmann 2013-03-03 20:51:28 +00:00 committed by Vinod Koul
parent 8bb9660418
commit f73bb9b355
1 changed files with 3 additions and 3 deletions
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6
drivers/dma/dw_dmac.c
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@ -1276,9 +1276,9 @@ static struct dma_chan *dw_dma_xlate(struct of_phandle_args *dma_spec,
if (dma_spec->args_count != 3)
return NULL;
fargs.req = be32_to_cpup(dma_spec->args+0);
fargs.src = be32_to_cpup(dma_spec->args+1);
fargs.dst = be32_to_cpup(dma_spec->args+2);
fargs.req = dma_spec->args[0];
fargs.src = dma_spec->args[1];
fargs.dst = dma_spec->args[2];
if (WARN_ON(fargs.req >= DW_DMA_MAX_NR_REQUESTS ||
fargs.src >= dw->nr_masters ||