[PATCH 5.12 470/677] iommu/arm-smmu-v3: add bit field SFM into GERROR_ERR_MASK

From: Greg Kroah-Hartman
Date: Wed May 12 2021 - 14:59:17 EST


From: Zhen Lei <thunder.leizhen@xxxxxxxxxx>

[ Upstream commit 655c447c97d7fe462e6cd9e15809037be028bc70 ]

In arm_smmu_gerror_handler(), the value of the SMMU_GERROR register is
filtered by GERROR_ERR_MASK. However, the GERROR_ERR_MASK does not contain
the SFM bit. As a result, the subsequent error processing is not performed
when only the SFM error occurs.

Fixes: 48ec83bcbcf5 ("iommu/arm-smmu: Add initial driver support for ARM SMMUv3 devices")
Reported-by: Rui Zhu <zhurui3@xxxxxxxxxx>
Signed-off-by: Zhen Lei <thunder.leizhen@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20210324081603.1074-1-thunder.leizhen@xxxxxxxxxx
Signed-off-by: Will Deacon <will@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h
index f985817c967a..230b6f6b3901 100644
--- a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h
+++ b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h
@@ -115,7 +115,7 @@
#define GERROR_PRIQ_ABT_ERR (1 << 3)
#define GERROR_EVTQ_ABT_ERR (1 << 2)
#define GERROR_CMDQ_ERR (1 << 0)
-#define GERROR_ERR_MASK 0xfd
+#define GERROR_ERR_MASK 0x1fd

#define ARM_SMMU_GERRORN 0x64

--
2.30.2