[PATCH 4.9 54/61] drm/ast: Fix connector leak during driver unload

From: Greg Kroah-Hartman
Date: Thu Dec 20 2018 - 04:40:20 EST


4.9-stable review patch. If anyone has any objections, please let me know.

------------------

[ Upstream commit e594a5e349ddbfdaca1951bb3f8d72f3f1660d73 ]

When unloading the ast driver, a warning message is printed by
drm_mode_config_cleanup() because a reference is still held to one of
the drm_connector structs.

Correct this by calling drm_crtc_force_disable_all() in
ast_fbdev_destroy().

Signed-off-by: Sam Bobroff <sbobroff@xxxxxxxxxxxxx>
Reviewed-by: Daniel Vetter <daniel.vetter@xxxxxxxx>
Signed-off-by: Dave Airlie <airlied@xxxxxxxxxx>
Link: https://patchwork.freedesktop.org/patch/msgid/1e613f3c630c7bbc72e04a44b178259b9164d2f6.1543798395.git.sbobroff@xxxxxxxxxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/gpu/drm/ast/ast_fb.c | 1 +
1 file changed, 1 insertion(+)

diff --git a/drivers/gpu/drm/ast/ast_fb.c b/drivers/gpu/drm/ast/ast_fb.c
index 7a86e24e2687..5e0d3e561b04 100644
--- a/drivers/gpu/drm/ast/ast_fb.c
+++ b/drivers/gpu/drm/ast/ast_fb.c
@@ -286,6 +286,7 @@ static void ast_fbdev_destroy(struct drm_device *dev,
{
struct ast_framebuffer *afb = &afbdev->afb;

+ drm_crtc_force_disable_all(dev);
drm_fb_helper_unregister_fbi(&afbdev->helper);
drm_fb_helper_release_fbi(&afbdev->helper);

--
2.19.1