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path: root/drivers/gpu/drm/drm_bufs.c
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Diffstat (limited to 'drivers/gpu/drm/drm_bufs.c')
-rw-r--r--drivers/gpu/drm/drm_bufs.c11
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_bufs.c b/drivers/gpu/drm/drm_bufs.c
index d7d10cabb9bb..a39ab2193bfe 100644
--- a/drivers/gpu/drm/drm_bufs.c
+++ b/drivers/gpu/drm/drm_bufs.c
@@ -377,6 +377,17 @@ int drm_legacy_addmap(struct drm_device *dev, resource_size_t offset,
}
EXPORT_SYMBOL(drm_legacy_addmap);
+struct drm_local_map *drm_legacy_findmap(struct drm_device *dev,
+ unsigned int token)
+{
+ struct drm_map_list *_entry;
+ list_for_each_entry(_entry, &dev->maplist, head)
+ if (_entry->user_token == token)
+ return _entry->map;
+ return NULL;
+}
+EXPORT_SYMBOL(drm_legacy_findmap);
+
/**
* Ioctl to specify a range of memory that is available for mapping by a
* non-root process.