edma: do not waste memory for dma_mask

Accordingly to commentary in the platform_device_register_full the memory
allocated for dma_mask will not going to be freed. That's why is better to
assign dma_mask afterwards.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>

1 files changed, 4 insertions, 2 deletions

diff --git a/drivers/dma/edma.c b/drivers/dma/edma.c
index 82c8672f26e8..af44cadb8de1 100644
--- a/drivers/dma/edma.c
+++ b/drivers/dma/edma.c
@@ -620,13 +620,11 @@ static struct platform_device *pdev0, *pdev1;
 static const struct platform_device_info edma_dev_info0 = {
         .name = "edma-dma-engine",
         .id = 0,
-        .dma_mask = DMA_BIT_MASK(32),
 };
 
 static const struct platform_device_info edma_dev_info1 = {
         .name = "edma-dma-engine",
         .id = 1,
-        .dma_mask = DMA_BIT_MASK(32),
 };
 
 static int edma_init(void)
@@ -640,6 +638,8 @@ static int edma_init(void)
                         ret = PTR_ERR(pdev0);
                         goto out;
                 }
+                pdev0->dev.dma_mask = &pdev0->dev.coherent_dma_mask;
+                pdev0->dev.coherent_dma_mask = DMA_BIT_MASK(32);
         }
 
         if (EDMA_CTLRS == 2) {
@@ -649,6 +649,8 @@ static int edma_init(void)
                         platform_device_unregister(pdev0);
                         ret = PTR_ERR(pdev1);
                 }
+                pdev1->dev.dma_mask = &pdev1->dev.coherent_dma_mask;
+                pdev1->dev.coherent_dma_mask = DMA_BIT_MASK(32);
         }
 
 out: