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Message-Id: <20180528100331.274719153@linuxfoundation.org>
Date:   Mon, 28 May 2018 12:00:56 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Thierry Reding <treding@...dia.com>,
        Sasha Levin <alexander.levin@...rosoft.com>
Subject: [PATCH 4.14 271/496] drm/tegra: Shutdown on driver unbind

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

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

From: Thierry Reding <treding@...dia.com>

[ 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@...dia.com>
Signed-off-by: Sasha Levin <alexander.levin@...rosoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/gpu/drm/tegra/drm.c |    1 +
 1 file changed, 1 insertion(+)

--- 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_
 
 	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);


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