Commit 17224e08 authored by Yong Wu's avatar Yong Wu Committed by Joerg Roedel
Browse files

iommu/mediatek: Remove for_each_m4u in tlb_sync_all 



The tlb_sync_all is called from these three functions:
a) flush_iotlb_all: it will be called for each a iommu HW.
b) tlb_flush_range_sync: it already has for_each_m4u.
c) in irq: When IOMMU HW translation fault, Only need flush itself.

Thus, No need for_each_m4u in this tlb_sync_all. Remove it.

Signed-off-by: default avatarYong Wu <yong.wu@mediatek.com>
Reviewed-by: default avatarDafna Hirschfeld <dafna.hirschfeld@collabora.com>
Reviewed-by: default avatarAngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20211208120744.2415-2-dafna.hirschfeld@collabora.com


Signed-off-by: default avatarJoerg Roedel <jroedel@suse.de>
parent 754e0b0e

drivers/iommu/mtk_iommu.c

+7 −9
Original line number Diff line number Diff line
@@ -210,9 +210,8 @@ static struct mtk_iommu_domain *to_mtk_domain(struct iommu_domain *dom) 


static void mtk_iommu_tlb_flush_all(struct mtk_iommu_data *data)

{

	for_each_m4u(data) {

	if (pm_runtime_get_if_in_use(data->dev) <= 0)

			continue;

		return;



	writel_relaxed(F_INVLD_EN1 | F_INVLD_EN0,

		       data->base + data->plat_data->inv_sel_reg);
@@ -221,7 +220,6 @@ static void mtk_iommu_tlb_flush_all(struct mtk_iommu_data *data) 


	pm_runtime_put(data->dev);

}

}



static void mtk_iommu_tlb_flush_range_sync(unsigned long iova, size_t size,

					   size_t granule,