linux-kernel - [PATCH 2/2] ARM: dma-mapping: Use iommu_paging_domain

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Message-Id: <20240812070202.9366-2-baolu.lu@linux.intel.com>
Date: Mon, 12 Aug 2024 15:02:02 +0800
From: Lu Baolu <baolu.lu@...ux.intel.com>
To: Russell King <linux@...linux.org.uk>,
	Inki Dae <inki.dae@...sung.com>,
	Seung-Woo Kim <sw0312.kim@...sung.com>,
	Kyungmin Park <kyungmin.park@...sung.com>,
	David Airlie <airlied@...il.com>,
	Daniel Vetter <daniel@...ll.ch>,
	Krzysztof Kozlowski <krzk@...nel.org>,
	Alim Akhtar <alim.akhtar@...sung.com>,
	Joerg Roedel <joro@...tes.org>,
	Will Deacon <will@...nel.org>,
	Robin Murphy <robin.murphy@....com>,
	Jason Gunthorpe <jgg@...pe.ca>,
	Kevin Tian <kevin.tian@...el.com>
Cc: Yi Liu <yi.l.liu@...el.com>,
	iommu@...ts.linux.dev,
	linux-arm-kernel@...ts.infradead.org,
	linux-media@...r.kernel.org,
	dri-devel@...ts.freedesktop.org,
	linux-kernel@...r.kernel.org,
	Lu Baolu <baolu.lu@...ux.intel.com>,
	Jason Gunthorpe <jgg@...dia.com>
Subject: [PATCH 2/2] ARM: dma-mapping: Use iommu_paging_domain_alloc()

Since arm_iommu_create_mapping() now accepts the device, let's replace
iommu_domain_alloc() with iommu_paging_domain_alloc() to retire the former.

Signed-off-by: Lu Baolu <baolu.lu@...ux.intel.com>
Reviewed-by: Jason Gunthorpe <jgg@...dia.com>
Link: https://lore.kernel.org/r/20240610085555.88197-18-baolu.lu@linux.intel.com
---
 arch/arm/mm/dma-mapping.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c
index 52f9c56cc3cb..88c2d68a69c9 100644
--- a/arch/arm/mm/dma-mapping.c
+++ b/arch/arm/mm/dma-mapping.c
@@ -1585,9 +1585,11 @@ arm_iommu_create_mapping(struct device *dev, dma_addr_t base, u64 size)
 
 	spin_lock_init(&mapping->lock);
 
-	mapping->domain = iommu_domain_alloc(dev->bus);
-	if (!mapping->domain)
+	mapping->domain = iommu_paging_domain_alloc(dev);
+	if (IS_ERR(mapping->domain)) {
+		err = PTR_ERR(mapping->domain);
 		goto err4;
+	}
 
 	kref_init(&mapping->kref);
 	return mapping;
-- 
2.34.1