linux-kernel - [PATCH 2/2] media: venus: firmware: Use iommu_paging_domain

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Message-Id: <20240812072105.9578-2-baolu.lu@linux.intel.com>
Date: Mon, 12 Aug 2024 15:21:05 +0800
From: Lu Baolu <baolu.lu@...ux.intel.com>
To: Dmitry Osipenko <digetx@...il.com>,
	Mauro Carvalho Chehab <mchehab@...nel.org>,
	Thierry Reding <thierry.reding@...il.com>,
	Jonathan Hunter <jonathanh@...dia.com>,
	Stanimir Varbanov <stanimir.k.varbanov@...il.com>,
	Vikash Garodia <quic_vgarodia@...cinc.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: linux-media@...r.kernel.org,
	linux-tegra@...r.kernel.org,
	linux-arm-msm@...r.kernel.org,
	iommu@...ts.linux.dev,
	linux-kernel@...r.kernel.org,
	Lu Baolu <baolu.lu@...ux.intel.com>,
	Jason Gunthorpe <jgg@...dia.com>
Subject: [PATCH 2/2] media: venus: firmware: Use iommu_paging_domain_alloc()

An iommu domain is allocated in venus_firmware_init() and is attached to
core->fw.dev in the same function. Use iommu_paging_domain_alloc() to
make it explicit.

Signed-off-by: Lu Baolu <baolu.lu@...ux.intel.com>
Reviewed-by: Jason Gunthorpe <jgg@...dia.com>
Link: https://lore.kernel.org/r/20240610085555.88197-10-baolu.lu@linux.intel.com
---
 drivers/media/platform/qcom/venus/firmware.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/media/platform/qcom/venus/firmware.c b/drivers/media/platform/qcom/venus/firmware.c
index fe7da2b30482..66a18830e66d 100644
--- a/drivers/media/platform/qcom/venus/firmware.c
+++ b/drivers/media/platform/qcom/venus/firmware.c
@@ -316,10 +316,10 @@ int venus_firmware_init(struct venus_core *core)
 
 	core->fw.dev = &pdev->dev;
 
-	iommu_dom = iommu_domain_alloc(&platform_bus_type);
-	if (!iommu_dom) {
+	iommu_dom = iommu_paging_domain_alloc(core->fw.dev);
+	if (IS_ERR(iommu_dom)) {
 		dev_err(core->fw.dev, "Failed to allocate iommu domain\n");
-		ret = -ENOMEM;
+		ret = PTR_ERR(iommu_dom);
 		goto err_unregister;
 	}
 
-- 
2.34.1