Commit 9d25e3cc authored Oct 09, 2017 by Marek Szyprowski Committed by Joerg Roedel Oct 12, 2017

iommu/exynos: Remove initconst attribute to avoid potential kernel oops



Exynos SYSMMU registers standard platform device with sysmmu_of_match
table, what means that this table is accessed every time a new platform
device is registered in a system. This might happen also after the boot,
so the table must not be attributed as initconst to avoid potential kernel
oops caused by access to freed memory.

Fixes: 6b21a5db ("iommu/exynos: Support for device tree")
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Joerg Roedel <jroedel@suse.de>

parent aba2d9a6

drivers/iommu/exynos-iommu.c

+1 −1

Original line number	Original line	Diff line number	Diff line
	@@ -709,7 +709,7 @@ static const struct dev_pm_ops sysmmu_pm_ops = {
	pm_runtime_force_resume)		pm_runtime_force_resume)
	};		};

	static const struct of_device_id sysmmu_of_match[] __initconst = {		static const struct of_device_id sysmmu_of_match[] = {
	{ .compatible = "samsung,exynos-sysmmu", },		{ .compatible = "samsung,exynos-sysmmu", },
	{ },		{ },
	};		};