linux-kernel - [PATCH v2 14/22] soc/fsl/qbman: Use iommu_paging_domain

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Date: Tue,  4 Jun 2024 09:51:26 +0800
From: Lu Baolu <baolu.lu@...ux.intel.com>
To: 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>,
	David Airlie <airlied@...il.com>,
	Daniel Vetter <daniel@...ll.ch>,
	Kalle Valo <kvalo@...nel.org>,
	Bjorn Andersson <andersson@...nel.org>,
	Mathieu Poirier <mathieu.poirier@...aro.org>,
	Alex Williamson <alex.williamson@...hat.com>,
	mst@...hat.com,
	Jason Wang <jasowang@...hat.com>,
	Thierry Reding <thierry.reding@...il.com>,
	Jonathan Hunter <jonathanh@...dia.com>,
	Mikko Perttunen <mperttunen@...dia.com>,
	iommu@...ts.linux.dev,
	dri-devel@...ts.freedesktop.org,
	linux-kernel@...r.kernel.org,
	Lu Baolu <baolu.lu@...ux.intel.com>
Subject: [PATCH v2 14/22] soc/fsl/qbman: Use iommu_paging_domain_alloc()

An iommu domain is allocated in portal_set_cpu() and is attached to
pcfg->dev in the same function.

Use iommu_paging_domain_alloc() to make it explicit.

Signed-off-by: Lu Baolu <baolu.lu@...ux.intel.com>
---
 drivers/soc/fsl/qbman/qman_portal.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/soc/fsl/qbman/qman_portal.c b/drivers/soc/fsl/qbman/qman_portal.c
index e23b60618c1a..456ef5d5c199 100644
--- a/drivers/soc/fsl/qbman/qman_portal.c
+++ b/drivers/soc/fsl/qbman/qman_portal.c
@@ -48,9 +48,10 @@ static void portal_set_cpu(struct qm_portal_config *pcfg, int cpu)
 	struct device *dev = pcfg->dev;
 	int ret;
 
-	pcfg->iommu_domain = iommu_domain_alloc(&platform_bus_type);
-	if (!pcfg->iommu_domain) {
+	pcfg->iommu_domain = iommu_paging_domain_alloc(dev);
+	if (IS_ERR(pcfg->iommu_domain)) {
 		dev_err(dev, "%s(): iommu_domain_alloc() failed", __func__);
+		pcfg->iommu_domain = NULL;
 		goto no_iommu;
 	}
 	ret = fsl_pamu_configure_l1_stash(pcfg->iommu_domain, cpu);
-- 
2.34.1