From: Thierry Reding <treding@nvidia.com>
Date: Sun, 18 Mar 2018 00:13:39 +0000 (+0100)
Subject: drm/tegra: Shutdown on driver unbind
X-Git-Tag: v4.14.45~225
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=92ab37923634609154d4dd7c7df13b80c345a1e8;p=platform%2Fkernel%2Flinux-exynos.git

drm/tegra: Shutdown on driver unbind

[ Upstream commit 192b4af6cd28cdad9b42fd79c21a90a2aeb0bec7 ]

Since commit 846c7dfc1193 ("drm/atomic: Try to preserve the crtc enabled
state in drm_atomic_remove_fb, v2."), removing the last framebuffer will
no longer disable the corresponding pipeline, which causes the KMS core
to complain about leaked connectors on driver unbind.

Fix this by calling drm_atomic_helper_shutdown() on driver unbind, which
will cause all display pipelines to be shut down and therefore drop the
extra references on the connectors.

Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/gpu/drm/tegra/drm.c b/drivers/gpu/drm/tegra/drm.c
index 597d563..0598b4c 100644
--- a/drivers/gpu/drm/tegra/drm.c
+++ b/drivers/gpu/drm/tegra/drm.c
@@ -250,6 +250,7 @@ static void tegra_drm_unload(struct drm_device *drm)
 
 	drm_kms_helper_poll_fini(drm);
 	tegra_drm_fb_exit(drm);
+	drm_atomic_helper_shutdown(drm);
 	drm_mode_config_cleanup(drm);
 
 	err = host1x_device_exit(device);