Prevent possible NULL pointer dereference if of_iomap() fails. Handle
the error by skipping such power domain.
Signed-off-by: Krzysztof Kozlowski <k.kozlowski@xxxxxxxxxxx>
---
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 20f267121b3e..fd7640a6b503 100644
--- a/arch/arm/mach-exynos/pm_domains.c
+++ b/arch/arm/mach-exynos/pm_domains.c
@@ -128,6 +128,13 @@ static __init int exynos4_pm_init_power_domain(void)
pd->pd.name = kstrdup(np->name, 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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