iommu: remove the unused dev_has_feat method

This method is never actually called.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Lu Baolu <baolu.lu@linux.intel.com>
Link: https://lore.kernel.org/r/20220708080616.238833-2-hch@lst.de
Signed-off-by: Joerg Roedel <jroedel@suse.de>

diff --git a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c
index d9c1623..1b6c17d 100644 (file)
--- a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c
+++ b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c
@@ -2853,7 +2853,6 @@ static struct iommu_ops arm_smmu_ops = {
        .of_xlate               = arm_smmu_of_xlate,
        .get_resv_regions       = arm_smmu_get_resv_regions,
        .put_resv_regions       = generic_iommu_put_resv_regions,
-       .dev_has_feat           = arm_smmu_dev_has_feature,
        .dev_feat_enabled       = arm_smmu_dev_feature_enabled,
        .dev_enable_feat        = arm_smmu_dev_enable_feature,
        .dev_disable_feat       = arm_smmu_dev_disable_feature,

diff --git a/include/linux/iommu.h b/include/linux/iommu.h
index e6abd99..a3acdb4 100644 (file)
--- a/include/linux/iommu.h
+++ b/include/linux/iommu.h
@@ -164,8 +164,7 @@ struct iommu_iort_rmr_data {
  *                      supported, this feature must be enabled before and
  *                      disabled after %IOMMU_DEV_FEAT_SVA.
  *
- * Device drivers query whether a feature is supported using
- * iommu_dev_has_feature(), and enable it using iommu_dev_enable_feature().
+ * Device drivers enable a feature using iommu_dev_enable_feature().
  */
 enum iommu_dev_features {
        IOMMU_DEV_FEAT_SVA,
@@ -248,7 +247,6 @@ struct iommu_ops {
        bool (*is_attach_deferred)(struct device *dev);
 
        /* Per device IOMMU features */
-       bool (*dev_has_feat)(struct device *dev, enum iommu_dev_features f);
        bool (*dev_feat_enabled)(struct device *dev, enum iommu_dev_features f);
        int (*dev_enable_feat)(struct device *dev, enum iommu_dev_features f);
        int (*dev_disable_feat)(struct device *dev, enum iommu_dev_features f);