From: Rob Clark robdclark@chromium.org
commit e36ca2fad6bb4ef0603bdb5556578e9082fe0056 upstream.
When the special handling of qcom,adreno-smmu was moved into qcom_smmu_create(), it was overlooked that we didn't have all the required entries in qcom_smmu_impl_of_match. So we stopped getting adreno_smmu_priv on sc7180, breaking per-process pgtables.
Fixes: 30b912a03d91 ("iommu/arm-smmu-qcom: Move the qcom,adreno-smmu check into qcom_smmu_create") Cc: stable@vger.kernel.org Suggested-by: Lepton Wu lepton@chromium.org Signed-off-by: Rob Clark robdclark@chromium.org Reviewed-by: Konrad Dybcio konrad.dybcio@linaro.org Reviewed-by: Dmitry Baryshkov dmitry.baryshkov@linaro.org Patchwork: https://patchwork.freedesktop.org/patch/537357/ Link: https://lore.kernel.org/r/20230516222039.907690-1-robdclark@gmail.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c | 10 ++++++++++ 1 file changed, 10 insertions(+)
--- a/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c +++ b/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c @@ -517,6 +517,7 @@ static const struct of_device_id __maybe { .compatible = "qcom,qcm2290-smmu-500", .data = &qcom_smmu_500_impl0_data }, { .compatible = "qcom,qdu1000-smmu-500", .data = &qcom_smmu_500_impl0_data }, { .compatible = "qcom,sc7180-smmu-500", .data = &qcom_smmu_500_impl0_data }, + { .compatible = "qcom,sc7180-smmu-v2", .data = &qcom_smmu_v2_data }, { .compatible = "qcom,sc7280-smmu-500", .data = &qcom_smmu_500_impl0_data }, { .compatible = "qcom,sc8180x-smmu-500", .data = &qcom_smmu_500_impl0_data }, { .compatible = "qcom,sc8280xp-smmu-500", .data = &qcom_smmu_500_impl0_data }, @@ -561,5 +562,14 @@ struct arm_smmu_device *qcom_smmu_impl_i if (match) return qcom_smmu_create(smmu, match->data);
+ /* + * If you hit this WARN_ON() you are missing an entry in the + * qcom_smmu_impl_of_match[] table, and GPU per-process page- + * tables will be broken. + */ + WARN(of_device_is_compatible(np, "qcom,adreno-smmu"), + "Missing qcom_smmu_impl_of_match entry for: %s", + dev_name(smmu->dev)); + return smmu; }