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>

diff --git a/drivers/dma/ste_dma40.c b/drivers/dma/ste_dma40.c
index 23c5573e62ddd1d6b8aec8be10e9f47bcfaad39e..e5e60bb68d9dfa876ffb13dffefd588f9bfafd89 100644 (file)
--- a/drivers/dma/ste_dma40.c
+++ b/drivers/dma/ste_dma40.c
@@ -2337,7 +2337,7 @@ static struct dma_async_tx_descriptor *d40_prep_slave_sg(struct dma_chan *chan,
                                                         unsigned long dma_flags,
                                                         void *context)
 {
-       if (direction != DMA_DEV_TO_MEM && direction != DMA_MEM_TO_DEV)
+       if (!is_slave_direction(direction))
                return NULL;
 
        return d40_prep_sg(chan, sgl, sgl, sg_len, direction, dma_flags);