Re: [PATCH] iommu/arm-smmu-qcom: Fix TTBR0 read

[Bjorn Andersson]

On Mon 08 Nov 09:17 PST 2021, Rob Clark wrote:

> From: Rob Clark <robdclark@xxxxxxxxxxxx>
> 
> 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>

Regards,
Bjorn

> ---
>  drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c b/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c
> index 55690af1b25d..c998960495b4 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);
>  }
>  
> -- 
> 2.31.1
>