[PATCH 2/2] mtd: omap2: Use devm_ioremap_resource()

[Jingoo Han <jg1.han@samsung.com>]

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(). Also,
'unsigned long mem_size' is removed from 'struct omap_nand_info',
because the 'mem_size' variable is not necessary anymore.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
---
 drivers/mtd/nand/omap2.c |   23 +++--------------------
 1 file changed, 3 insertions(+), 20 deletions(-)

diff --git a/drivers/mtd/nand/omap2.c b/drivers/mtd/nand/omap2.c
index ef4190a..2c44586 100644
--- a/drivers/mtd/nand/omap2.c
+++ b/drivers/mtd/nand/omap2.c
@@ -159,7 +159,6 @@ struct omap_nand_info {
 
 	int				gpmc_cs;
 	unsigned long			phys_base;
-	unsigned long			mem_size;
 	struct completion		comp;
 	struct dma_chan			*dma;
 	int				gpmc_irq_fifo;
@@ -1665,27 +1664,11 @@ static int omap_nand_probe(struct platform_device *pdev)
 	nand_chip->options	|= NAND_SKIP_BBTSCAN;
 
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	if (res == NULL) {
-		err = -EINVAL;
-		dev_err(&pdev->dev, "error getting memory resource\n");
-		goto return_error;
-	}
+	nand_chip->IO_ADDR_R = devm_ioremap_resource(&pdev->dev, res);
+	if (IS_ERR(nand_chip->IO_ADDR_R))
+		return PTR_ERR(nand_chip->IO_ADDR_R);
 
 	info->phys_base = res->start;
-	info->mem_size = resource_size(res);
-
-	if (!devm_request_mem_region(&pdev->dev, info->phys_base,
-				info->mem_size,	pdev->dev.driver->name)) {
-		err = -EBUSY;
-		goto return_error;
-	}
-
-	nand_chip->IO_ADDR_R = devm_ioremap(&pdev->dev, info->phys_base,
-						info->mem_size);
-	if (!nand_chip->IO_ADDR_R) {
-		err = -ENOMEM;
-		goto return_error;
-	}
 
 	nand_chip->controller = &info->controller;
 
-- 
1.7.10.4