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drm/virtgpu: initialise fbdev after getting initial display info

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This should avoid issues with the fbdev path trying to render
before we've gotten the display info.

Signed-off-by: Dave Airlie <airlied@redhat.com>

[ kraxel: wait for display-info reply ]

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Dave Airlie 2015-06-16 14:25:34 +10:00 committed by Gerd Hoffmann
parent 50cb941a26
commit 441012aff6
3 changed files with 6 additions and 1 deletions
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1
drivers/gpu/drm/virtio/virtgpu_drv.h
View file

@ -171,6 +171,7 @@ struct virtio_gpu_device {
wait_queue_head_t resp_wq;
/* current display info */
spinlock_t display_info_lock;
bool display_info_pending;
struct virtio_gpu_fence_driver fence_drv;

4
drivers/gpu/drm/virtio/virtgpu_kms.c
View file

@ -137,9 +137,11 @@ int virtio_gpu_driver_load(struct drm_device *dev, unsigned long flags)
virtio_device_ready(vgdev->vdev);
vgdev->vqs_ready = true;
virtio_gpu_cmd_get_display_info(vgdev);
wait_event_timeout(vgdev->resp_wq, !vgdev->display_info_pending,
5 * HZ);
if (virtio_gpu_fbdev)
virtio_gpu_fbdev_init(vgdev);
virtio_gpu_cmd_get_display_info(vgdev);
return 0;

2
drivers/gpu/drm/virtio/virtgpu_vq.c
View file

@ -534,6 +534,7 @@ static void virtio_gpu_cmd_get_display_info_cb(struct virtio_gpu_device *vgdev,
}
}
vgdev->display_info_pending = false;
spin_unlock(&vgdev->display_info_lock);
wake_up(&vgdev->resp_wq);
@ -558,6 +559,7 @@ int virtio_gpu_cmd_get_display_info(struct virtio_gpu_device *vgdev)
resp_buf);
memset(cmd_p, 0, sizeof(*cmd_p));
vgdev->display_info_pending = true;
cmd_p->type = cpu_to_le32(VIRTIO_GPU_CMD_GET_DISPLAY_INFO);
virtio_gpu_queue_ctrl_buffer(vgdev, vbuf);
return 0;