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| author |   Krzysztof Kozlowski <k.kozlowski@samsung.com> | 2015-03-27 13:10:06 +0100 |
|---|---|---|
| committer |   Kukjin Kim <kgene@kernel.org> | 2015-06-06 02:17:55 +0900 |
| commit | ef2156cf4be33e099637c753ab46c5b76e15b167 (patch) | |
| tree | deae44817ecd470597f278c67e767c5d6d45b3fc | |
| parent | Linux 4.1-rc4 (diff) | |
| download | linux-dev-ef2156cf4be33e099637c753ab46c5b76e15b167.tar.xz linux-dev-ef2156cf4be33e099637c753ab46c5b76e15b167.zip | |
ARM: EXYNOS: Handle of of_iomap() failure
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>
| -rw-r--r-- | arch/arm/mach-exynos/pm_domains.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/arm/mach-exynos/pm_domains.c b/arch/arm/mach-exynos/pm_domains.c index a9686535f9ed..b15f8663f9fc 100644 --- a/arch/arm/mach-exynos/pm_domains.c +++ b/arch/arm/mach-exynos/pm_domains.c @@ -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; |