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ARM: EXYNOS: Fix potential NULL pointer access in exynos_sys_powerdown_conf

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If no platform devices binded to the driver but driver itself loaded and
exynos_sys_powerdown_conf is called from
arch/arm/mach-exynos/{suspend.c, pm.c} it will result in NULL pointer access,
to prevent this added check on pmu_context for NULL.

Signed-off-by: Pankaj Dubey <pankaj.dubey@samsung.com>
Reviewed-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Tested-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
This commit is contained in:
Pankaj Dubey 2015-11-13 14:59:36 +05:30 committed by Krzysztof Kozlowski
parent 8005c49d9a
commit ce36f6ad86
1 changed files with 5 additions and 1 deletions
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6
arch/arm/mach-exynos/pmu.c
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@ -748,8 +748,12 @@ static void exynos5_powerdown_conf(enum sys_powerdown mode)
void exynos_sys_powerdown_conf(enum sys_powerdown mode) void exynos_sys_powerdown_conf(enum sys_powerdown mode)
{ {
unsigned int i; unsigned int i;
const struct exynos_pmu_data *pmu_data;
const struct exynos_pmu_data *pmu_data = pmu_context->pmu_data; if (!pmu_context)
return;
pmu_data = pmu_context->pmu_data;
if (pmu_data->powerdown_conf) if (pmu_data->powerdown_conf)
pmu_data->powerdown_conf(mode); pmu_data->powerdown_conf(mode);