From e75276638c1423d286e425fd29375e5736c7635c Mon Sep 17 00:00:00 2001 From: Marek Szyprowski Date: Fri, 24 Mar 2017 10:18:44 +0100 Subject: [PATCH] iommu/exynos: Don't open-code loop unrolling IOMMU domain allocation is not performance critical operation, so remove hand made optimisation of unrolled initialization loop and leave this to the compiler. Signed-off-by: Marek Szyprowski Signed-off-by: Joerg Roedel --- drivers/iommu/exynos-iommu.c | 12 ++---------- 1 file changed, 2 insertions(+), 10 deletions(-) diff --git a/drivers/iommu/exynos-iommu.c b/drivers/iommu/exynos-iommu.c index a7e0821c9967..b83df7196e76 100644 --- a/drivers/iommu/exynos-iommu.c +++ b/drivers/iommu/exynos-iommu.c @@ -741,16 +741,8 @@ static struct iommu_domain *exynos_iommu_domain_alloc(unsigned type) goto err_counter; /* Workaround for System MMU v3.3 to prevent caching 1MiB mapping */ - for (i = 0; i < NUM_LV1ENTRIES; i += 8) { - domain->pgtable[i + 0] = ZERO_LV2LINK; - domain->pgtable[i + 1] = ZERO_LV2LINK; - domain->pgtable[i + 2] = ZERO_LV2LINK; - domain->pgtable[i + 3] = ZERO_LV2LINK; - domain->pgtable[i + 4] = ZERO_LV2LINK; - domain->pgtable[i + 5] = ZERO_LV2LINK; - domain->pgtable[i + 6] = ZERO_LV2LINK; - domain->pgtable[i + 7] = ZERO_LV2LINK; - } + for (i = 0; i < NUM_LV1ENTRIES; i++) + domain->pgtable[i] = ZERO_LV2LINK; handle = dma_map_single(dma_dev, domain->pgtable, LV1TABLE_SIZE, DMA_TO_DEVICE); -- 2.20.1