The SMR registers do not exist when stream matching is not supported by the hardware. Avoid writing to this register if not needed.
Signed-off-by: Olav Haugan <[email protected]> --- drivers/iommu/arm-smmu.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/iommu/arm-smmu.c b/drivers/iommu/arm-smmu.c index c16431f..1f3a5b3 100644 --- a/drivers/iommu/arm-smmu.c +++ b/drivers/iommu/arm-smmu.c @@ -1731,7 +1731,10 @@ static void arm_smmu_device_reset(struct arm_smmu_device *smmu) /* Mark all SMRn as invalid and all S2CRn as bypass */ for (i = 0; i < smmu->num_mapping_groups; ++i) { - writel_relaxed(~SMR_VALID, gr0_base + ARM_SMMU_GR0_SMR(i)); + if (smmu->features & ARM_SMMU_FEAT_STREAM_MATCH) { + writel_relaxed(~SMR_VALID, + gr0_base + ARM_SMMU_GR0_SMR(i)); + } writel_relaxed(S2CR_TYPE_BYPASS, gr0_base + ARM_SMMU_GR0_S2CR(i)); } -- The Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by The Linux Foundation -- To unsubscribe from this list: send the line "unsubscribe linux-arm-msm" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
