linux-kernel - [PATCH 10/23] iommu/sun50i: Drop IOVA cookie management

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Message-Id: <41bede7a3a1377e0fb2e3b6bc1f9f0b4ceff6f25.1626888444.git.robin.murphy@arm.com>
Date:   Wed, 21 Jul 2021 19:20:21 +0100
From:   Robin Murphy <robin.murphy@....com>
To:     joro@...tes.org, will@...nel.org
Cc:     iommu@...ts.linux-foundation.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        suravee.suthikulpanit@....com, baolu.lu@...ux.intel.com,
        john.garry@...wei.com, dianders@...omium.org
Subject: [PATCH 10/23] iommu/sun50i: Drop IOVA cookie management

The core code bakes its own cookies now.

Signed-off-by: Robin Murphy <robin.murphy@....com>
---
 drivers/iommu/sun50i-iommu.c | 12 +-----------
 1 file changed, 1 insertion(+), 11 deletions(-)

diff --git a/drivers/iommu/sun50i-iommu.c b/drivers/iommu/sun50i-iommu.c
index 181bb1c3437c..c349a95ec7bd 100644
--- a/drivers/iommu/sun50i-iommu.c
+++ b/drivers/iommu/sun50i-iommu.c
@@ -610,14 +610,10 @@ static struct iommu_domain *sun50i_iommu_domain_alloc(unsigned type)
 	if (!sun50i_domain)
 		return NULL;
 
-	if (type == IOMMU_DOMAIN_DMA &&
-	    iommu_get_dma_cookie(&sun50i_domain->domain))
-		goto err_free_domain;
-
 	sun50i_domain->dt = (u32 *)__get_free_pages(GFP_KERNEL | __GFP_ZERO,
 						    get_order(DT_SIZE));
 	if (!sun50i_domain->dt)
-		goto err_put_cookie;
+		goto err_free_domain;
 
 	refcount_set(&sun50i_domain->refcnt, 1);
 
@@ -627,10 +623,6 @@ static struct iommu_domain *sun50i_iommu_domain_alloc(unsigned type)
 
 	return &sun50i_domain->domain;
 
-err_put_cookie:
-	if (type == IOMMU_DOMAIN_DMA)
-		iommu_put_dma_cookie(&sun50i_domain->domain);
-
 err_free_domain:
 	kfree(sun50i_domain);
 
@@ -644,8 +636,6 @@ static void sun50i_iommu_domain_free(struct iommu_domain *domain)
 	free_pages((unsigned long)sun50i_domain->dt, get_order(DT_SIZE));
 	sun50i_domain->dt = NULL;
 
-	iommu_put_dma_cookie(domain);
-
 	kfree(sun50i_domain);
 }
 
-- 
2.25.1