linux-kernel - [PATCH v3 4/7] iommu/mediatek: Delete the leaf in the tlb flush

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Message-ID: <1571035101-4213-5-git-send-email-yong.wu@mediatek.com>
Date:   Mon, 14 Oct 2019 14:38:18 +0800
From:   Yong Wu <yong.wu@...iatek.com>
To:     Matthias Brugger <matthias.bgg@...il.com>,
        Joerg Roedel <joro@...tes.org>,
        Will Deacon <will.deacon@....com>
CC:     Evan Green <evgreen@...omium.org>,
        Robin Murphy <robin.murphy@....com>,
        Tomasz Figa <tfiga@...gle.com>,
        <linux-mediatek@...ts.infradead.org>,
        <srv_heupstream@...iatek.com>, <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <iommu@...ts.linux-foundation.org>, <yong.wu@...iatek.com>,
        <youlin.pei@...iatek.com>, Nicolas Boichat <drinkcat@...omium.org>,
        <anan.sun@...iatek.com>, <cui.zhang@...iatek.com>,
        <chao.hao@...iatek.com>, <edison.hsieh@...iatek.com>
Subject: [PATCH v3 4/7] iommu/mediatek: Delete the leaf in the tlb flush

In our tlb range flush, we don't care the "leaf". Remove it to simplify
the code. no functional change.

Signed-off-by: Yong Wu <yong.wu@...iatek.com>
---
 drivers/iommu/mtk_iommu.c | 16 ++++------------
 1 file changed, 4 insertions(+), 12 deletions(-)

diff --git a/drivers/iommu/mtk_iommu.c b/drivers/iommu/mtk_iommu.c
index 8712afc..19f936c 100644
--- a/drivers/iommu/mtk_iommu.c
+++ b/drivers/iommu/mtk_iommu.c
@@ -174,8 +174,7 @@ static void mtk_iommu_tlb_flush_all(void *cookie)
 }
 
 static void mtk_iommu_tlb_add_flush_nosync(unsigned long iova, size_t size,
-					   size_t granule, bool leaf,
-					   void *cookie)
+					   size_t granule, void *cookie)
 {
 	struct mtk_iommu_data *data = cookie;
 
@@ -219,14 +218,7 @@ static void mtk_iommu_tlb_sync(void *cookie)
 static void mtk_iommu_tlb_flush_walk(unsigned long iova, size_t size,
 				     size_t granule, void *cookie)
 {
-	mtk_iommu_tlb_add_flush_nosync(iova, size, granule, false, cookie);
-	mtk_iommu_tlb_sync(cookie);
-}
-
-static void mtk_iommu_tlb_flush_leaf(unsigned long iova, size_t size,
-				     size_t granule, void *cookie)
-{
-	mtk_iommu_tlb_add_flush_nosync(iova, size, granule, true, cookie);
+	mtk_iommu_tlb_add_flush_nosync(iova, size, granule, cookie);
 	mtk_iommu_tlb_sync(cookie);
 }
 
@@ -245,7 +237,7 @@ static void mtk_iommu_tlb_flush_page_nosync(struct iommu_iotlb_gather *gather,
 static const struct iommu_flush_ops mtk_iommu_flush_ops = {
 	.tlb_flush_all = mtk_iommu_tlb_flush_all,
 	.tlb_flush_walk = mtk_iommu_tlb_flush_walk,
-	.tlb_flush_leaf = mtk_iommu_tlb_flush_leaf,
+	.tlb_flush_leaf = mtk_iommu_tlb_flush_walk,
 	.tlb_add_page = mtk_iommu_tlb_flush_page_nosync,
 };
 
@@ -475,7 +467,7 @@ static void mtk_iommu_iotlb_sync(struct iommu_domain *domain,
 		spin_lock_irqsave(&dom->pgtlock, flags);
 
 	mtk_iommu_tlb_add_flush_nosync(gather->start, length, gather->pgsize,
-				       false, data);
+				       data);
 	mtk_iommu_tlb_sync(data);
 
 	if (!is_in_gather)
-- 
1.9.1