drm/amdgpu: remove vm->mutex

Signed-off-by: Chunming Zhou <David1.Zhou@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>

1 files changed, 2 insertions, 12 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c
index 00c5b580f56c..fc32fc01a64b 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c
@@ -115,12 +115,9 @@ int amdgpu_gem_object_open(struct drm_gem_object *obj, struct drm_file *file_pri
         struct amdgpu_vm *vm = &fpriv->vm;
         struct amdgpu_bo_va *bo_va;
         int r;
-        mutex_lock(&vm->mutex);
         r = amdgpu_bo_reserve(rbo, false);
-        if (r) {
-                mutex_unlock(&vm->mutex);
+        if (r)
                 return r;
-        }
 
         bo_va = amdgpu_vm_bo_find(vm, rbo);
         if (!bo_va) {
@@ -129,7 +126,6 @@ int amdgpu_gem_object_open(struct drm_gem_object *obj, struct drm_file *file_pri
                 ++bo_va->ref_count;
         }
         amdgpu_bo_unreserve(rbo);
-        mutex_unlock(&vm->mutex);
         return 0;
 }
 
@@ -142,10 +138,8 @@ void amdgpu_gem_object_close(struct drm_gem_object *obj,
         struct amdgpu_vm *vm = &fpriv->vm;
         struct amdgpu_bo_va *bo_va;
         int r;
-        mutex_lock(&vm->mutex);
         r = amdgpu_bo_reserve(rbo, true);
         if (r) {
-                mutex_unlock(&vm->mutex);
                 dev_err(adev->dev, "leaking bo va because "
                         "we fail to reserve bo (%d)\n", r);
                 return;
@@ -157,7 +151,6 @@ void amdgpu_gem_object_close(struct drm_gem_object *obj,
                 }
         }
         amdgpu_bo_unreserve(rbo);
-        mutex_unlock(&vm->mutex);
 }
 
 static int amdgpu_gem_handle_lockup(struct amdgpu_device *adev, int r)
@@ -553,7 +546,6 @@ int amdgpu_gem_va_ioctl(struct drm_device *dev, void *data,
         gobj = drm_gem_object_lookup(dev, filp, args->handle);
         if (gobj == NULL)
                 return -ENOENT;
-        mutex_lock(&fpriv->vm.mutex);
         rbo = gem_to_amdgpu_bo(gobj);
         INIT_LIST_HEAD(&list);
         INIT_LIST_HEAD(&duplicates);
@@ -568,7 +560,6 @@ int amdgpu_gem_va_ioctl(struct drm_device *dev, void *data,
         }
         r = ttm_eu_reserve_buffers(&ticket, &list, true, &duplicates);
         if (r) {
-                mutex_unlock(&fpriv->vm.mutex);
                 drm_gem_object_unreference_unlocked(gobj);
                 return r;
         }
@@ -577,7 +568,6 @@ int amdgpu_gem_va_ioctl(struct drm_device *dev, void *data,
         if (!bo_va) {
                 ttm_eu_backoff_reservation(&ticket, &list);
                 drm_gem_object_unreference_unlocked(gobj);
-                mutex_unlock(&fpriv->vm.mutex);
                 return -ENOENT;
         }
 
@@ -602,7 +592,7 @@ int amdgpu_gem_va_ioctl(struct drm_device *dev, void *data,
         ttm_eu_backoff_reservation(&ticket, &list);
         if (!r && !(args->flags & AMDGPU_VM_DELAY_UPDATE))
                 amdgpu_gem_va_update_vm(adev, bo_va, args->operation);
-        mutex_unlock(&fpriv->vm.mutex);
+
         drm_gem_object_unreference_unlocked(gobj);
         return r;
 }