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Commit ce36f6ad authored by Pankaj Dubey's avatar Pankaj Dubey Committed by Krzysztof Kozlowski
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ARM: EXYNOS: Fix potential NULL pointer access in exynos_sys_powerdown_conf 



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: default avatarPankaj Dubey <pankaj.dubey@samsung.com>
Reviewed-by: default avatarKrzysztof Kozlowski <k.kozlowski@samsung.com>
Tested-by: default avatarKrzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: default avatarKrzysztof Kozlowski <k.kozlowski@samsung.com>
parent 8005c49d

arch/arm/mach-exynos/pmu.c

+5 −1
Original line number Original line Diff line number Diff line
@@ -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;



	if (!pmu_context)

		return;





	const struct exynos_pmu_data *pmu_data = pmu_context->pmu_data;

	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);