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ARM: EXYNOS: Handle of of_iomap() failure

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Prevent possible NULL pointer dereference if of_iomap() fails.
Handle the error by skipping such power domain.

Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Kukjin Kim <kgene@kernel.org>
This commit is contained in:
Krzysztof Kozlowski 2015-03-27 13:10:06 +01:00 committed by Kukjin Kim
parent e26081808e
commit ef2156cf4b
1 changed files with 8 additions and 0 deletions
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8
arch/arm/mach-exynos/pm_domains.c
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@ -138,6 +138,14 @@ static __init int exynos4_pm_init_power_domain(void)
pd->pd.name = kstrdup(dev_name(dev), GFP_KERNEL);
pd->name = pd->pd.name;
pd->base = of_iomap(np, 0);
if (!pd->base) {
dev_warn(&pdev->dev, "Failed to map memory\n");
kfree(pd->pd.name);
kfree(pd);
of_node_put(np);
continue;
}
pd->pd.power_off = exynos_pd_power_off;
pd->pd.power_on = exynos_pd_power_on;