This is a note to let you know that I've just added the patch titled
iommu/arm-smmu-qcom: Fix TTBR0 read
to the 5.16-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
iommu-arm-smmu-qcom-fix-ttbr0-read.patch
and it can be found in the queue-5.16 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit af80c7fde4dbcff9422dffb259f7d89e86e1f8b8
Author: Rob Clark <robdclark@xxxxxxxxxxxx>
Date: Mon Nov 8 09:17:23 2021 -0800
iommu/arm-smmu-qcom: Fix TTBR0 read
[ Upstream commit c31112fbd4077a51a14ff338038c82e9571dc821 ]
It is a 64b register, lets not lose the upper bits.
Fixes: ab5df7b953d8 ("iommu/arm-smmu-qcom: Add an adreno-smmu-priv callback to get pagefault info")
Signed-off-by: Rob Clark <robdclark@xxxxxxxxxxxx>
Reviewed-by: Bjorn Andersson <bjorn.andersson@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20211108171724.470973-1-robdclark@xxxxxxxxx
Signed-off-by: Will Deacon <will@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c b/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c
index ca736b065dd0b..40c91dd368a4d 100644
--- a/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c
+++ b/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c
@@ -51,7 +51,7 @@ static void qcom_adreno_smmu_get_fault_info(const void *cookie,
info->fsynr1 = arm_smmu_cb_read(smmu, cfg->cbndx, ARM_SMMU_CB_FSYNR1);
info->far = arm_smmu_cb_readq(smmu, cfg->cbndx, ARM_SMMU_CB_FAR);
info->cbfrsynra = arm_smmu_gr1_read(smmu, ARM_SMMU_GR1_CBFRSYNRA(cfg->cbndx));
- info->ttbr0 = arm_smmu_cb_read(smmu, cfg->cbndx, ARM_SMMU_CB_TTBR0);
+ info->ttbr0 = arm_smmu_cb_readq(smmu, cfg->cbndx, ARM_SMMU_CB_TTBR0);
info->contextidr = arm_smmu_cb_read(smmu, cfg->cbndx, ARM_SMMU_CB_CONTEXTIDR);
}
