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drm/virtio: Fix driver removal with disabled KMS

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DRM atomic and modesetting aren't initialized if virtio-gpu driver built
with disabled KMS, leading to access of uninitialized data on driver
removal/unbinding and crashing kernel. Fix it by skipping shutting down
atomic core with unavailable KMS.

Fixes: 72122c69d7 ("drm/virtio: Add option to disable KMS support")
Signed-off-by: Dmitry Osipenko <dmitry.osipenko@collabora.com>
Tested-by: Ryosuke Yasuoka <ryasuoka@redhat.com>
Reviewed-by: Ryosuke Yasuoka <ryasuoka@redhat.com>
Link: https://patch.msgid.link/20260604122743.13383-1-dmitry.osipenko@collabora.com
This commit is contained in:
Dmitry Osipenko 2026-06-04 15:27:43 +03:00
parent d9faef5644
commit f329e8325e
1 changed files with 4 additions and 1 deletions
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5
drivers/gpu/drm/virtio/virtgpu_drv.c
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@ -124,7 +124,10 @@ static void virtio_gpu_remove(struct virtio_device *vdev)
struct drm_device *dev = vdev->priv;
drm_dev_unplug(dev);
drm_atomic_helper_shutdown(dev);
if (drm_core_check_feature(dev, DRIVER_ATOMIC))
drm_atomic_helper_shutdown(dev);
virtio_gpu_deinit(dev);
drm_dev_put(dev);
}