[PATCH -next] dmaengine: xilinx: xdma: Use resource_size() in xdma_probe()

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There is a warning reported by coccinelle:

./drivers/dma/xilinx/xdma.c:888:22-25: ERROR:
	Missing resource_size with   res

Use resource_size() on resource object instead of explicit computation.

Signed-off-by: Li Zetao <lizetao1@xxxxxxxxxx>
 drivers/dma/xilinx/xdma.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/dma/xilinx/xdma.c b/drivers/dma/xilinx/xdma.c
index e0bfd129d563..da5410dddfbf 100644
--- a/drivers/dma/xilinx/xdma.c
+++ b/drivers/dma/xilinx/xdma.c
@@ -885,7 +885,7 @@ static int xdma_probe(struct platform_device *pdev)
 		goto failed;
 	xdev->irq_start = res->start;
-	xdev->irq_num = res->end - res->start + 1;
+	xdev->irq_num = resource_size(res);
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	if (!res) {

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