dmaengine: sun6i: use of_device_get_match_data

The usage of of_device_get_match_data reduce the code size a bit.
Furthermore, it prevents an improbable dereference when
of_match_device() return NULL.

Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Corentin Labbe <clabbe.montjoie@gmail.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>

diff --git a/drivers/dma/sun6i-dma.c b/drivers/dma/sun6i-dma.c
index bcd496e..584f4e8 100644 (file)
--- a/drivers/dma/sun6i-dma.c
+++ b/drivers/dma/sun6i-dma.c
@@ -1064,7 +1064,6 @@ MODULE_DEVICE_TABLE(of, sun6i_dma_match);
 
 static int sun6i_dma_probe(struct platform_device *pdev)
 {
-       const struct of_device_id *device;
        struct sun6i_dma_dev *sdc;
        struct resource *res;
        int ret, i;
@@ -1073,10 +1072,9 @@ static int sun6i_dma_probe(struct platform_device *pdev)
        if (!sdc)
                return -ENOMEM;
 
-       device = of_match_device(sun6i_dma_match, &pdev->dev);
-       if (!device)
+       sdc->cfg = of_device_get_match_data(&pdev->dev);
+       if (!sdc->cfg)
                return -ENODEV;
-       sdc->cfg = device->data;
 
        res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
        sdc->base = devm_ioremap_resource(&pdev->dev, res);