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dma: ste_dma40: reuse is_slave_direction helper
The is_slave_direction helps to check if the transfer type is slave. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
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@ -2337,7 +2337,7 @@ static struct dma_async_tx_descriptor *d40_prep_slave_sg(struct dma_chan *chan,
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unsigned long dma_flags,
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void *context)
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{
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if (direction != DMA_DEV_TO_MEM && direction != DMA_MEM_TO_DEV)
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if (!is_slave_direction(direction))
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return NULL;
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return d40_prep_sg(chan, sgl, sgl, sg_len, direction, dma_flags);
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