linux-kernel - [PATCH] drm/virtio: implement virtio_gpu

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Message-ID: <20250507082821.2710706-1-kraxel@redhat.com>
Date: Wed,  7 May 2025 10:28:21 +0200
From: Gerd Hoffmann <kraxel@...hat.com>
To: dri-devel@...ts.freedesktop.org
Cc: Gerd Hoffmann <kraxel@...hat.com>,
	"Michael S. Tsirkin" <mst@...hat.com>,
	Eric Auger <eric.auger@...hat.com>,
	David Airlie <airlied@...hat.com>,
	Gurchetan Singh <gurchetansingh@...omium.org>,
	Chia-I Wu <olvaffe@...il.com>,
	Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
	Maxime Ripard <mripard@...nel.org>,
	Thomas Zimmermann <tzimmermann@...e.de>,
	Simona Vetter <simona@...ll.ch>,
	virtualization@...ts.linux.dev (open list:VIRTIO GPU DRIVER),
	linux-kernel@...r.kernel.org (open list)
Subject: [PATCH] drm/virtio: implement virtio_gpu_shutdown

Calling drm_dev_unplug() is the drm way to say the device
is gone and can not be accessed any more.

Cc: Michael S. Tsirkin <mst@...hat.com>
Signed-off-by: Gerd Hoffmann <kraxel@...hat.com>
Reviewed-by: Eric Auger <eric.auger@...hat.com>
Tested-by: Eric Auger <eric.auger@...hat.com>
---
 drivers/gpu/drm/virtio/virtgpu_drv.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/virtio/virtgpu_drv.c b/drivers/gpu/drm/virtio/virtgpu_drv.c
index e32e680c7197..71c6ccad4b99 100644
--- a/drivers/gpu/drm/virtio/virtgpu_drv.c
+++ b/drivers/gpu/drm/virtio/virtgpu_drv.c
@@ -130,10 +130,10 @@ static void virtio_gpu_remove(struct virtio_device *vdev)
 
 static void virtio_gpu_shutdown(struct virtio_device *vdev)
 {
-	/*
-	 * drm does its own synchronization on shutdown.
-	 * Do nothing here, opt out of device reset.
-	 */
+	struct drm_device *dev = vdev->priv;
+
+	/* stop talking to the device */
+	drm_dev_unplug(dev);
 }
 
 static void virtio_gpu_config_changed(struct virtio_device *vdev)
-- 
2.49.0