linux-kernel - [PATCH 32/39] drm: renesas: shmobile: Shutdown the display on remove

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Message-Id: <2c28c0a137854d39b6bc997a21bd6d2db1f7a0a5.1687423204.git.geert+renesas@glider.be>
Date:   Thu, 22 Jun 2023 11:21:44 +0200
From:   Geert Uytterhoeven <geert+renesas@...der.be>
To:     Laurent Pinchart <laurent.pinchart@...asonboard.com>,
        Kieran Bingham <kieran.bingham+renesas@...asonboard.com>,
        David Airlie <airlied@...il.com>,
        Daniel Vetter <daniel@...ll.ch>,
        Thomas Zimmermann <tzimmermann@...e.de>,
        Magnus Damm <magnus.damm@...il.com>
Cc:     dri-devel@...ts.freedesktop.org, linux-renesas-soc@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Geert Uytterhoeven <geert+renesas@...der.be>
Subject: [PATCH 32/39] drm: renesas: shmobile: Shutdown the display on remove

When the device is unbound from the driver, the display may be active.
Make sure it gets shut down.

Signed-off-by: Geert Uytterhoeven <geert+renesas@...der.be>
---
 drivers/gpu/drm/renesas/shmobile/shmob_drm_drv.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/gpu/drm/renesas/shmobile/shmob_drm_drv.c b/drivers/gpu/drm/renesas/shmobile/shmob_drm_drv.c
index a29c0c1093725b6e..636f1888b815579b 100644
--- a/drivers/gpu/drm/renesas/shmobile/shmob_drm_drv.c
+++ b/drivers/gpu/drm/renesas/shmobile/shmob_drm_drv.c
@@ -16,6 +16,7 @@
 #include <linux/pm_runtime.h>
 #include <linux/slab.h>
 
+#include <drm/drm_crtc_helper.h>
 #include <drm/drm_drv.h>
 #include <drm/drm_fbdev_generic.h>
 #include <drm/drm_gem_dma_helper.h>
@@ -145,6 +146,7 @@ static int shmob_drm_remove(struct platform_device *pdev)
 	struct drm_device *ddev = &sdev->ddev;
 
 	drm_dev_unregister(ddev);
+	drm_helper_force_disable_all(ddev);
 	drm_kms_helper_poll_fini(ddev);
 	return 0;
 }
-- 
2.34.1