crypto: sahara - Use devm_ioremap_resource()

Use devm_ioremap_resource() in order to make the code simpler,
and remove redundant return value check of platform_get_resource()
because the value is checked by devm_ioremap_resource().

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

diff --git a/drivers/crypto/sahara.c b/drivers/crypto/sahara.c
index 785a9de..894468f 100644 (file)
--- a/drivers/crypto/sahara.c
+++ b/drivers/crypto/sahara.c
@@ -885,22 +885,9 @@ static int sahara_probe(struct platform_device *pdev)
 
        /* Get the base address */
        res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-       if (!res) {
-               dev_err(&pdev->dev, "failed to get memory region resource\n");
-               return -ENODEV;
-       }
-
-       if (devm_request_mem_region(&pdev->dev, res->start,
-                       resource_size(res), SAHARA_NAME) == NULL) {
-               dev_err(&pdev->dev, "failed to request memory region\n");
-               return -ENOENT;
-       }
-       dev->regs_base = devm_ioremap(&pdev->dev, res->start,
-                                     resource_size(res));
-       if (!dev->regs_base) {
-               dev_err(&pdev->dev, "failed to ioremap address region\n");
-               return -ENOENT;
-       }
+       dev->regs_base = devm_ioremap_resource(&pdev->dev, res);
+       if (IS_ERR(dev->regs_base))
+               return PTR_ERR(dev->regs_base);
 
        /* Get the IRQ */
        irq = platform_get_irq(pdev,  0);