linux-kernel - [PATCH rc] iommu/tegra241-cmdqv: Fix missing cpu_to_le64 at lvcmdq_err

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Message-ID: <20250814193039.2265813-1-nicolinc@nvidia.com>
Date: Thu, 14 Aug 2025 12:30:38 -0700
From: Nicolin Chen <nicolinc@...dia.com>
To: <will@...nel.org>
CC: <robin.murphy@....com>, <joro@...tes.org>, <jonathanh@...dia.com>,
	<thierry.reding@...il.com>, <vdumpa@...dia.com>, <jgg@...dia.com>,
	<linux-tegra@...r.kernel.org>, <linux-arm-kernel@...ts.infradead.org>,
	<iommu@...ts.linux.dev>, <linux-kernel@...r.kernel.org>, <praan@...gle.com>
Subject: [PATCH rc] iommu/tegra241-cmdqv: Fix missing cpu_to_le64 at lvcmdq_err_map

Sparse reported a warning:
drivers/iommu/arm/arm-smmu-v3/tegra241-cmdqv.c:305:47:
	sparse:     expected restricted __le64
	sparse:     got unsigned long long

Add cpu_to_le64() to fix that.

Reported-by: kernel test robot <lkp@...el.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202508142105.Jb5Smjsg-lkp@intel.com/
Suggested-by: Pranjal Shrivastava <praan@...gle.com>
Signed-off-by: Nicolin Chen <nicolinc@...dia.com>
---
 drivers/iommu/arm/arm-smmu-v3/tegra241-cmdqv.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/drivers/iommu/arm/arm-smmu-v3/tegra241-cmdqv.c b/drivers/iommu/arm/arm-smmu-v3/tegra241-cmdqv.c
index be1aaaf8cd17c..378104cd395e5 100644
--- a/drivers/iommu/arm/arm-smmu-v3/tegra241-cmdqv.c
+++ b/drivers/iommu/arm/arm-smmu-v3/tegra241-cmdqv.c
@@ -301,9 +301,11 @@ static void tegra241_vintf_user_handle_error(struct tegra241_vintf *vintf)
 	struct iommu_vevent_tegra241_cmdqv vevent_data;
 	int i;
 
-	for (i = 0; i < LVCMDQ_ERR_MAP_NUM_64; i++)
-		vevent_data.lvcmdq_err_map[i] =
-			readq_relaxed(REG_VINTF(vintf, LVCMDQ_ERR_MAP_64(i)));
+	for (i = 0; i < LVCMDQ_ERR_MAP_NUM_64; i++) {
+		u64 err = readq_relaxed(REG_VINTF(vintf, LVCMDQ_ERR_MAP_64(i)));
+
+		vevent_data.lvcmdq_err_map[i] = cpu_to_le64(err);
+	}
 
 	iommufd_viommu_report_event(viommu, IOMMU_VEVENTQ_TYPE_TEGRA241_CMDQV,
 				    &vevent_data, sizeof(vevent_data));
-- 
2.43.0