[PATCH v5 02/27] drm/ttm: Expose ttm_tt_unpopulate for driver use

[Andrey Grodzovsky]

It's needed to drop iommu backed pages on device unplug
before device's IOMMU group is released.

Signed-off-by: Andrey Grodzovsky <andrey.grodzovsky at amd.com>
---
 drivers/gpu/drm/ttm/ttm_tt.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/gpu/drm/ttm/ttm_tt.c b/drivers/gpu/drm/ttm/ttm_tt.c
index 48c407cff112..f2ce1b372096 100644
--- a/drivers/gpu/drm/ttm/ttm_tt.c
+++ b/drivers/gpu/drm/ttm/ttm_tt.c
@@ -431,3 +431,4 @@ void ttm_tt_mgr_init(unsigned long num_pages, unsigned long num_dma32_pages)
 	if (!ttm_dma32_pages_limit)
 		ttm_dma32_pages_limit = num_dma32_pages;
 }
+EXPORT_SYMBOL(ttm_tt_unpopulate);
-- 
2.25.1