iommu/rockchip: Remove redundant DMA syncs

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When we allocate new pagetable pages, we don't modify them between the
initial dma_map_single() call and the dma_sync_single_for_device() call
via rk_iommu_flush(), so the latter is entirely pointless.

Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Link: https://lore.kernel.org/r/5c29a9ff0a20df0167635b1901f94b5195c1fb28.1621604979.git.robin.murphy@arm.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>

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Robin Murphy 2021-05-21 14:49:39 +01:00 • committed by Joerg Roedel

parent 8124c8a6b3

commit 9197bc958f

1 changed files with 0 additions and 3 deletions

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drivers/iommu/rockchip-iommu.c

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