[PATCH] gpu: drm: ast: ast_ttm.c: Remove unused function

[Rickard Strandqvist]

Remove the function ast_bo_unpin() that is not used anywhere.

This was partially found by using a static code analysis program called 
cppcheck.

Signed-off-by: Rickard Strandqvist <rickard_strandqvist at spectrumdigital.se>
---
 drivers/gpu/drm/ast/ast_drv.h |    1 -
 drivers/gpu/drm/ast/ast_ttm.c |   20 --------------------
 2 files changed, 21 deletions(-)

diff --git a/drivers/gpu/drm/ast/ast_drv.h b/drivers/gpu/drm/ast/ast_drv.h
index 86205a2..1f8db90 100644
--- a/drivers/gpu/drm/ast/ast_drv.h
+++ b/drivers/gpu/drm/ast/ast_drv.h
@@ -361,7 +361,6 @@ int ast_gem_create(struct drm_device *dev,
                   struct drm_gem_object **obj);

 int ast_bo_pin(struct ast_bo *bo, u32 pl_flag, u64 *gpu_addr);
-int ast_bo_unpin(struct ast_bo *bo);

 static inline int ast_bo_reserve(struct ast_bo *bo, bool no_wait)
 {
diff --git a/drivers/gpu/drm/ast/ast_ttm.c b/drivers/gpu/drm/ast/ast_ttm.c
index 08f82ea..f7c183a 100644
--- a/drivers/gpu/drm/ast/ast_ttm.c
+++ b/drivers/gpu/drm/ast/ast_ttm.c
@@ -375,26 +375,6 @@ int ast_bo_pin(struct ast_bo *bo, u32 pl_flag, u64 
*gpu_addr)
        return 0;
 }

-int ast_bo_unpin(struct ast_bo *bo)
-{
-       int i, ret;
-       if (!bo->pin_count) {
-               DRM_ERROR("unpin bad %p\n", bo);
-               return 0;
-       }
-       bo->pin_count--;
-       if (bo->pin_count)
-               return 0;
-
-       for (i = 0; i < bo->placement.num_placement ; i++)
-               bo->placements[i].flags &= ~TTM_PL_FLAG_NO_EVICT;
-       ret = ttm_bo_validate(&bo->bo, &bo->placement, false, false);
-       if (ret)
-               return ret;
-
-       return 0;
-}
-
 int ast_bo_push_sysram(struct ast_bo *bo)
 {
        int i, ret;
-- 
1.7.10.4