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authorKrzysztof Kozlowski <k.kozlowski@samsung.com>2015-03-27 12:10:06 (GMT)
committerKukjin Kim <kgene@kernel.org>2015-06-05 17:17:55 (GMT)
commitef2156cf4be33e099637c753ab46c5b76e15b167 (patch)
treedeae44817ecd470597f278c67e767c5d6d45b3fc /arch/arm/mach-exynos
parente26081808edadfd257c6c9d81014e3b25e9a6118 (diff)
downloadlinux-ef2156cf4be33e099637c753ab46c5b76e15b167.tar.xz
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>
Diffstat (limited to 'arch/arm/mach-exynos')
-rw-r--r--arch/arm/mach-exynos/pm_domains.c8
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 a968653..b15f866 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;