iommu/exynos: Block SYSMMU while invalidating FLPD cache
Documentation specifies that SYSMMU should be in blocked state while
performing TLB/FLPD cache invalidation, so add needed calls to
sysmmu_block/unblock.
Fixes: 66a7ed84b3
("iommu/exynos: Apply workaround of caching fault page table entries")
CC: stable@vger.kernel.org # v4.10+
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
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@ -512,7 +512,10 @@ static void sysmmu_tlb_invalidate_flpdcache(struct sysmmu_drvdata *data,
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spin_lock_irqsave(&data->lock, flags);
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if (data->active && data->version >= MAKE_MMU_VER(3, 3)) {
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clk_enable(data->clk_master);
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__sysmmu_tlb_invalidate_entry(data, iova, 1);
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if (sysmmu_block(data)) {
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__sysmmu_tlb_invalidate_entry(data, iova, 1);
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sysmmu_unblock(data);
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}
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clk_disable(data->clk_master);
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}
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spin_unlock_irqrestore(&data->lock, flags);
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