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 <[email protected]> --- 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 48b5dabd06ce..2395478dde75 100644 --- a/drivers/iommu/exynos-iommu.c +++ b/drivers/iommu/exynos-iommu.c @@ -759,16 +759,8 @@ 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); -- 1.9.1 _______________________________________________ iommu mailing list [email protected] https://lists.linuxfoundation.org/mailman/listinfo/iommu
