From e99030609e27abff7e1a868cb56384c678b09984 Mon Sep 17 00:00:00 2001 From: H Hartley Sweeten Date: Mon, 14 Dec 2009 16:48:34 -0500 Subject: [PATCH] mtd: orion_nand.c: add error handling and use resource_size() Use platform_get_resource() to fetch the memory resource and add error handling for when it is missing. Use resource_size() for the ioremap(). Signed-off-by: H Hartley Sweeten Signed-off-by: David Woodhouse --- drivers/mtd/nand/orion_nand.c | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) diff --git a/drivers/mtd/nand/orion_nand.c b/drivers/mtd/nand/orion_nand.c index f59c074..9903460 100644 --- a/drivers/mtd/nand/orion_nand.c +++ b/drivers/mtd/nand/orion_nand.c @@ -74,6 +74,7 @@ static int __init orion_nand_probe(struct platform_device *pdev) struct mtd_info *mtd; struct nand_chip *nc; struct orion_nand_data *board; + struct resource *res; void __iomem *io_base; int ret = 0; #ifdef CONFIG_MTD_PARTITIONS @@ -89,8 +90,13 @@ static int __init orion_nand_probe(struct platform_device *pdev) } mtd = (struct mtd_info *)(nc + 1); - io_base = ioremap(pdev->resource[0].start, - pdev->resource[0].end - pdev->resource[0].start + 1); + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!res) { + err = -ENODEV; + goto no_res; + } + + io_base = ioremap(res->start, resource_size(res)); if (!io_base) { printk(KERN_ERR "orion_nand: ioremap failed\n"); ret = -EIO; -- 2.7.4