drm/amdgpu: max_pde_used usage should be under protect
Need to take the lock when accessing this. Signed-off-by: monk.liu <monk.liu@amd.com> Reviewed-by: Christian König <christian.koenig@amd.com> Reviewed-by: Jammy Zhou <jammy.zhou@amd.com>
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@ -90,10 +90,13 @@ struct amdgpu_bo_list_entry *amdgpu_vm_get_bos(struct amdgpu_device *adev,
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struct amdgpu_bo_list_entry *list;
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unsigned i, idx;
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mutex_lock(&vm->mutex);
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list = drm_malloc_ab(vm->max_pde_used + 2,
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sizeof(struct amdgpu_bo_list_entry));
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if (!list)
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if (!list) {
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mutex_unlock(&vm->mutex);
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return NULL;
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}
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/* add the vm page table to the list */
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list[0].robj = vm->page_directory;
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@ -116,6 +119,7 @@ struct amdgpu_bo_list_entry *amdgpu_vm_get_bos(struct amdgpu_device *adev,
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list[idx].tv.shared = true;
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list_add(&list[idx++].tv.head, head);
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}
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mutex_unlock(&vm->mutex);
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return list;
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}
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