iommu/amd: Remove IOMMUv2 pasid_state_list

This list was only used for the task_exit notifier function.
Now that it is gone we can remove it.

Signed-off-by: Joerg Roedel <jroedel@suse.de>
Tested-by: Jay Cornwall <Jay.Cornwall@amd.com>

diff --git a/drivers/iommu/amd_iommu_v2.c b/drivers/iommu/amd_iommu_v2.c
index 09d342bf0f4724082644e2b58c9ffbfcf18f30fb..c65f3ec60bec0ae58048c94eab361c12b8ad7fe1 100644 (file)
--- a/drivers/iommu/amd_iommu_v2.c
+++ b/drivers/iommu/amd_iommu_v2.c
@@ -86,10 +86,6 @@ struct fault {
 static LIST_HEAD(state_list);
 static spinlock_t state_lock;
 
-/* List and lock for all pasid_states */
-static LIST_HEAD(pasid_state_list);
-static DEFINE_SPINLOCK(ps_lock);
-
 static struct workqueue_struct *iommu_wq;
 
 /*
@@ -171,25 +167,6 @@ static void put_device_state_wait(struct device_state *dev_state)
        free_device_state(dev_state);
 }
 
-static void link_pasid_state(struct pasid_state *pasid_state)
-{
-       spin_lock(&ps_lock);
-       list_add_tail(&pasid_state->list, &pasid_state_list);
-       spin_unlock(&ps_lock);
-}
-
-static void __unlink_pasid_state(struct pasid_state *pasid_state)
-{
-       list_del(&pasid_state->list);
-}
-
-static void unlink_pasid_state(struct pasid_state *pasid_state)
-{
-       spin_lock(&ps_lock);
-       __unlink_pasid_state(pasid_state);
-       spin_unlock(&ps_lock);
-}
-
 /* Must be called under dev_state->lock */
 static struct pasid_state **__get_pasid_state_ptr(struct device_state *dev_state,
                                                  int pasid, bool alloc)
@@ -346,7 +323,6 @@ static void unbind_pasid(struct device_state *dev_state, int pasid)
        if (pasid_state == NULL)
                return;
 
-       unlink_pasid_state(pasid_state);
        __unbind_pasid(pasid_state);
        put_pasid_state_wait(pasid_state); /* Reference taken in this function */
 }
@@ -689,8 +665,6 @@ int amd_iommu_bind_pasid(struct pci_dev *pdev, int pasid,
        if (ret)
                goto out_clear_state;
 
-       link_pasid_state(pasid_state);
-
        return 0;
 
 out_clear_state: