[PATCH] drivers/base: bail out if request_iomem_region fails
From: Sascha Hauer <s.hauer@pengutronix.de>
Date: 2012-06-27 13:56:52
Subsystem:
driver core, kobjects, debugfs and sysfs, the rest · Maintainers:
Greg Kroah-Hartman, "Rafael J. Wysocki", Danilo Krummrich, Linus Torvalds
When request_iomem_region fails we have to bail out instead of dereferencing res->start. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> --- drivers/base/driver.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/drivers/base/driver.c b/drivers/base/driver.c
index 3be4b99..81cedca 100644
--- a/drivers/base/driver.c
+++ b/drivers/base/driver.c@@ -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; }
--
1.7.10
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