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drivers/base: bail out if request_iomem_region fails 

When request_iomem_region fails we have to bail out instead of
dereferencing res->start.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This commit is contained in:
Sascha Hauer 2012-06-27 15:15:30 +02:00
parent fd4c51aa28
commit a6e358b2f5
1 changed files with 2 additions and 0 deletions
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2
drivers/base/driver.c
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@ -262,6 +262,8 @@ void __iomem *dev_request_mem_region(struct device_d *dev, int num)
return NULL;
res = request_iomem_region(dev_name(dev), res->start, res->size);
if (!res)
return NULL;
return (void __force __iomem *)res->start;
}