drm/ast: Remove set but not used variable 'bo'

Fixes gcc '-Wunused-but-set-variable' warning:

drivers/gpu/drm/ast/ast_fb.c: In function 'astfb_create':
drivers/gpu/drm/ast/ast_fb.c:194:17: warning:
 variable 'bo' set but not used [-Wunused-but-set-variable]

It never used since introduction in commit 312fec1405dd ("drm: Initial KMS
driver for AST (ASpeed Technologies) 2000 series (v2)")

Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/1544258185-50430-1-git-send-email-yuehaibing@huawei.com

1 files changed, 0 insertions, 2 deletions

diff --git a/drivers/gpu/drm/ast/ast_fb.c b/drivers/gpu/drm/ast/ast_fb.c
index 0cd827e11fa2..a80bca1a857f 100644
--- a/drivers/gpu/drm/ast/ast_fb.c
+++ b/drivers/gpu/drm/ast/ast_fb.c
@@ -191,7 +191,6 @@ static int astfb_create(struct drm_fb_helper *helper,
         int size, ret;
         void *sysram;
         struct drm_gem_object *gobj = NULL;
-        struct ast_bo *bo = NULL;
         mode_cmd.width = sizes->surface_width;
         mode_cmd.height = sizes->surface_height;
         mode_cmd.pitches[0] = mode_cmd.width * ((sizes->surface_bpp + 7)/8);
@@ -206,7 +205,6 @@ static int astfb_create(struct drm_fb_helper *helper,
                 DRM_ERROR("failed to create fbcon backing object %d\n", ret);
                 return ret;
         }
-        bo = gem_to_ast_bo(gobj);
 
         sysram = vmalloc(size);
         if (!sysram)