From: Krzysztof Kozlowski <k.kozlowski@xxxxxxxxxxx>
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>
---
Changes since v1:
1. Add missing kfree() of domain name (allocated with kstrdup()).
---
arch/arm/mach-exynos/pm_domains.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/arch/arm/mach-exynos/pm_domains.c b/arch/arm/mach-exynos/pm_domains.c
index cbe56b35aea0..14622b5f4481 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;
--
2.1.0
--
To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
