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rtc: rtc-davinci: use devm_ioremap_resource()

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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>
Cc: Kevin Hilman <khilman@linaro.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Jingoo Han 2014-04-03 14:49:48 -07:00 committed by Linus Torvalds
parent daaf90f0b0
commit 1e6789f6e2
1 changed files with 4 additions and 25 deletions
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29
drivers/rtc/rtc-davinci.c
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@ -119,8 +119,6 @@ static DEFINE_SPINLOCK(davinci_rtc_lock);
struct davinci_rtc { struct davinci_rtc {
struct rtc_device *rtc; struct rtc_device *rtc;
void __iomem *base; void __iomem *base;
resource_size_t pbase;
size_t base_size;
int irq; int irq;
}; };
@ -482,7 +480,7 @@ static int __init davinci_rtc_probe(struct platform_device *pdev)
{ {
struct device *dev = &pdev->dev; struct device *dev = &pdev->dev;
struct davinci_rtc *davinci_rtc; struct davinci_rtc *davinci_rtc;
struct resource *res, *mem; struct resource *res;
int ret = 0; int ret = 0;
davinci_rtc = devm_kzalloc(&pdev->dev, sizeof(struct davinci_rtc), GFP_KERNEL); davinci_rtc = devm_kzalloc(&pdev->dev, sizeof(struct davinci_rtc), GFP_KERNEL);
@ -496,28 +494,9 @@ static int __init davinci_rtc_probe(struct platform_device *pdev)
} }
res = platform_get_resource(pdev, IORESOURCE_MEM, 0); res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!res) { davinci_rtc->base = devm_ioremap_resource(dev, res);
dev_err(dev, "no mem resource\n"); if (IS_ERR(davinci_rtc->base))
return -EINVAL; return PTR_ERR(davinci_rtc->base);
}
davinci_rtc->pbase = res->start;
davinci_rtc->base_size = resource_size(res);
mem = devm_request_mem_region(dev, davinci_rtc->pbase,
davinci_rtc->base_size, pdev->name);
if (!mem) {
dev_err(dev, "RTC registers at %08x are not free\n",
davinci_rtc->pbase);
return -EBUSY;
}
davinci_rtc->base = devm_ioremap(dev, davinci_rtc->pbase,
davinci_rtc->base_size);
if (!davinci_rtc->base) {
dev_err(dev, "unable to ioremap MEM resource\n");
return -ENOMEM;
}
platform_set_drvdata(pdev, davinci_rtc); platform_set_drvdata(pdev, davinci_rtc);