ata: pata_samsung_cf: 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: Tejun Heo <tj@kernel.org>

1 files changed, 3 insertions, 15 deletions

diff --git a/drivers/ata/pata_samsung_cf.c b/drivers/ata/pata_samsung_cf.c
index cd2746b169a9..7d2142fbcbb7 100644
--- a/drivers/ata/pata_samsung_cf.c
+++ b/drivers/ata/pata_samsung_cf.c
@@ -531,22 +531,10 @@ static int __init pata_s3c_probe(struct platform_device *pdev)
         info->irq = platform_get_irq(pdev, 0);
 
         res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-        if (res == NULL) {
-                dev_err(dev, "failed to get mem resource\n");
-                return -EINVAL;
-        }
-
-        if (!devm_request_mem_region(dev, res->start,
-                                resource_size(res), DRV_NAME)) {
-                dev_err(dev, "error requesting register region\n");
-                return -EBUSY;
-        }
 
-        info->ide_addr = devm_ioremap(dev, res->start, resource_size(res));
-        if (!info->ide_addr) {
-                dev_err(dev, "failed to map IO base address\n");
-                return -ENOMEM;
-        }
+        info->ide_addr = devm_ioremap_resource(dev, res);
+        if (IS_ERR(info->ide_addr))
+                return PTR_ERR(info->ide_addr);
 
         info->clk = devm_clk_get(&pdev->dev, "cfcon");
         if (IS_ERR(info->clk)) {