From 4455286274474e95f223c68c215d32c864404889 Mon Sep 17 00:00:00 2001 From: Nicolin Chen Date: Mon, 15 Jun 2026 12:45:33 -0700 Subject: [PATCH] iommu/arm-smmu-v3: Declare eats_s1chk and eats_trans as host-endian u64 arm_smmu_get_ste_update_safe() declares the eats_s1chk and eats_trans locals as __le64, but initializes them from FIELD_PREP(), which returns a host-endian value, and passes them through cpu_to_le64() at the use sites. Sparse reports the following warnings: >> drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c:1122:38: sparse: sparse: cast from restricted __le64 drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c:1124:33: sparse: sparse: cast from restricted __le64 Declare both locals as u64 so the type matches FIELD_PREP() and the existing cpu_to_le64() at the use sites performs the host-to-little-endian conversion. No functional change. Fixes: 7cad80048595 ("iommu/arm-smmu-v3: Mark EATS_TRANS safe when computing the update sequence") Reported-by: kernel test robot Closes: https://lore.kernel.org/all/202606151017.QU0evpH9-lkp@intel.com/ Assisted-by: Claude:claude-opus-4-8 Signed-off-by: Nicolin Chen Reviewed-by: Jason Gunthorpe Reviewed-by: Pranjal Shrivastava Signed-off-by: Will Deacon --- drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c index a10affb483a4..401aaf8a6e8e 100644 --- a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c +++ b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c @@ -1240,9 +1240,9 @@ VISIBLE_IF_KUNIT void arm_smmu_get_ste_update_safe(const __le64 *cur, const __le64 *target, __le64 *safe_bits) { - const __le64 eats_s1chk = + const u64 eats_s1chk = FIELD_PREP(STRTAB_STE_1_EATS, STRTAB_STE_1_EATS_S1CHK); - const __le64 eats_trans = + const u64 eats_trans = FIELD_PREP(STRTAB_STE_1_EATS, STRTAB_STE_1_EATS_TRANS); /*