Messages in this thread Patch in this message | | | From | Krzysztof Kozlowski <> | Subject | [RESEND PATCH 1/2] ARM: EXYNOS: Handle of of_iomap() failure | Date | Fri, 27 Mar 2015 11:43:55 +0100 |
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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> --- arch/arm/mach-exynos/pm_domains.c | 7 +++++++ 1 file changed, 7 insertions(+)
diff --git a/arch/arm/mach-exynos/pm_domains.c b/arch/arm/mach-exynos/pm_domains.c index cbe56b35aea0..2c5c206f3ea9 100644 --- a/arch/arm/mach-exynos/pm_domains.c +++ b/arch/arm/mach-exynos/pm_domains.c @@ -138,6 +138,13 @@ 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); + of_node_put(np); + continue; + } + pd->pd.power_off = exynos_pd_power_off; pd->pd.power_on = exynos_pd_power_on; -- 1.9.1
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