diff --git a/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c b/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c
index 0eba5e883e3f..63f7173b241f 100644
--- a/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c
+++ b/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c
@@ -65,6 +65,8 @@ static int qcom_smmu_cfg_probe(struct arm_smmu_device *smmu)
 		smr = arm_smmu_gr0_read(smmu, ARM_SMMU_GR0_SMR(i));
 
 		if (FIELD_GET(ARM_SMMU_SMR_VALID, smr)) {
+			/* Ignore valid bit for SMR mask extraction. */
+			smr &= ~ARM_SMMU_SMR_VALID;
 			smmu->smrs[i].id = FIELD_GET(ARM_SMMU_SMR_ID, smr);
 			smmu->smrs[i].mask = FIELD_GET(ARM_SMMU_SMR_MASK, smr);
 			smmu->smrs[i].valid = true;