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authorDave Airlie <airlied@redhat.com>2015-06-16 06:25:34 +0200
committerGerd Hoffmann <kraxel@redhat.com>2015-06-16 11:22:40 +0200
commit441012aff674c8d2d9b371e1a19320de38eecc84 (patch)
tree90c56017b5fa4d915f199a942f61739d9fe16399 /drivers/gpu/drm/virtio
parentAdd virtio-vga bits. (diff)
downloadlinux-441012aff674c8d2d9b371e1a19320de38eecc84.tar.xz
linux-441012aff674c8d2d9b371e1a19320de38eecc84.zip
drm/virtgpu: initialise fbdev after getting initial display info
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>
Diffstat (limited to 'drivers/gpu/drm/virtio')
-rw-r--r--drivers/gpu/drm/virtio/virtgpu_drv.h1
-rw-r--r--drivers/gpu/drm/virtio/virtgpu_kms.c4
-rw-r--r--drivers/gpu/drm/virtio/virtgpu_vq.c2
3 files changed, 6 insertions, 1 deletions
diff --git a/drivers/gpu/drm/virtio/virtgpu_drv.h b/drivers/gpu/drm/virtio/virtgpu_drv.h
index e5a2c092460b..ff8de3d6f0b2 100644
--- a/drivers/gpu/drm/virtio/virtgpu_drv.h
+++ b/drivers/gpu/drm/virtio/virtgpu_drv.h
@@ -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;
diff --git a/drivers/gpu/drm/virtio/virtgpu_kms.c b/drivers/gpu/drm/virtio/virtgpu_kms.c
index 132405f15389..782766c00d70 100644
--- a/drivers/gpu/drm/virtio/virtgpu_kms.c
+++ b/drivers/gpu/drm/virtio/virtgpu_kms.c
@@ -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;
diff --git a/drivers/gpu/drm/virtio/virtgpu_vq.c b/drivers/gpu/drm/virtio/virtgpu_vq.c
index 8fa6513eb3bc..c5067926401f 100644
--- a/drivers/gpu/drm/virtio/virtgpu_vq.c
+++ b/drivers/gpu/drm/virtio/virtgpu_vq.c
@@ -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;