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>
diff --git a/drivers/ata/pata_samsung_cf.c b/drivers/ata/pata_samsung_cf.c
index cd2746b..7d2142f 100644
--- a/drivers/ata/pata_samsung_cf.c
+++ b/drivers/ata/pata_samsung_cf.c
@@ -531,22 +531,10 @@
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)) {