vfio/type1: revert "implement notify callback"

This is dead code.  Revert it.
  commit 487ace134053 ("vfio/type1: implement notify callback")

Signed-off-by: Steve Sistare <steven.sistare@oracle.com>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/1675184289-267876-7-git-send-email-steven.sistare@oracle.com
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>

diff --git a/drivers/vfio/vfio_iommu_type1.c b/drivers/vfio/vfio_iommu_type1.c
index fb29106..29616f2 100644 (file)
--- a/drivers/vfio/vfio_iommu_type1.c
+++ b/drivers/vfio/vfio_iommu_type1.c
@@ -75,7 +75,6 @@ struct vfio_iommu {
        bool                    v2;
        bool                    nesting;
        bool                    dirty_page_tracking;
-       bool                    container_open;
        struct list_head        emulated_iommu_groups;
 };
 
@@ -2562,7 +2561,6 @@ static void *vfio_iommu_type1_open(unsigned long arg)
        INIT_LIST_HEAD(&iommu->iova_list);
        iommu->dma_list = RB_ROOT;
        iommu->dma_avail = dma_entry_limit;
-       iommu->container_open = true;
        mutex_init(&iommu->lock);
        mutex_init(&iommu->device_list_lock);
        INIT_LIST_HEAD(&iommu->device_list);
@@ -3166,18 +3164,6 @@ vfio_iommu_type1_group_iommu_domain(void *iommu_data,
        return domain;
 }
 
-static void vfio_iommu_type1_notify(void *iommu_data,
-                                   enum vfio_iommu_notify_type event)
-{
-       struct vfio_iommu *iommu = iommu_data;
-
-       if (event != VFIO_IOMMU_CONTAINER_CLOSE)
-               return;
-       mutex_lock(&iommu->lock);
-       iommu->container_open = false;
-       mutex_unlock(&iommu->lock);
-}
-
 static const struct vfio_iommu_driver_ops vfio_iommu_driver_ops_type1 = {
        .name                   = "vfio-iommu-type1",
        .owner                  = THIS_MODULE,
@@ -3192,7 +3178,6 @@ static const struct vfio_iommu_driver_ops vfio_iommu_driver_ops_type1 = {
        .unregister_device      = vfio_iommu_type1_unregister_device,
        .dma_rw                 = vfio_iommu_type1_dma_rw,
        .group_iommu_domain     = vfio_iommu_type1_group_iommu_domain,
-       .notify                 = vfio_iommu_type1_notify,
 };
 
 static int __init vfio_iommu_type1_init(void)