Commit 03d92bd5 authored by Marek Szyprowski's avatar Marek Szyprowski Committed by Greg Kroah-Hartman

iommu/exynos: Block SYSMMU while invalidating FLPD cache

commit 7d2aa6b8 upstream.

Documentation specifies that SYSMMU should be in blocked state while
performing TLB/FLPD cache invalidation, so add needed calls to
sysmmu_block/unblock.

Fixes: 66a7ed84 ("iommu/exynos: Apply workaround of caching fault page table entries")
Signed-off-by: default avatarMarek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: default avatarJoerg Roedel <jroedel@suse.de>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent b7d02d90
......@@ -509,7 +509,10 @@ static void sysmmu_tlb_invalidate_flpdcache(struct sysmmu_drvdata *data,
spin_lock_irqsave(&data->lock, flags);
if (data->active && data->version >= MAKE_MMU_VER(3, 3)) {
clk_enable(data->clk_master);
__sysmmu_tlb_invalidate_entry(data, iova, 1);
if (sysmmu_block(data)) {
__sysmmu_tlb_invalidate_entry(data, iova, 1);
sysmmu_unblock(data);
}
clk_disable(data->clk_master);
}
spin_unlock_irqrestore(&data->lock, flags);
......
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