[PATCH 3/4] drm/virtio: add drm_driver.release callback.

Gerd Hoffmann
2019-12-20T11:59:48Z

Split virtio_gpu_deinit(), move the drm shutdown and release to
virtio_gpu_release(). Also free vbufs in case we can't queue them.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
---
drivers/gpu/drm/virtio/virtgpu_drv.h | 1 +
drivers/gpu/drm/virtio/virtgpu_drv.c | 4 ++++
drivers/gpu/drm/virtio/virtgpu_kms.c | 5 +++++
drivers/gpu/drm/virtio/virtgpu_vq.c | 8 ++++++--
4 files changed, 16 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/virtio/virtgpu_drv.h b/drivers/gpu/drm/virtio/virtgpu_drv.h
index 7e69c06e168e..227f7c07e61c 100644
--- a/drivers/gpu/drm/virtio/virtgpu_drv.h
+++ b/drivers/gpu/drm/virtio/virtgpu_drv.h
@@ -216,6 +216,7 @@ extern struct drm_ioctl_desc virtio_gpu_ioctls[DRM_VIRTIO_NUM_IOCTLS];
/* virtio_kms.c */
int virtio_gpu_init(struct drm_device *dev);
void virtio_gpu_deinit(struct drm_device *dev);
+void virtio_gpu_release(struct drm_device *dev);
int virtio_gpu_driver_open(struct drm_device *dev, struct drm_file *file);
void virtio_gpu_driver_postclose(struct drm_device *dev, struct drm_file *file);

diff --git a/drivers/gpu/drm/virtio/virtgpu_drv.c b/drivers/gpu/drm/virtio/virtgpu_drv.c
index 8cf27af3ad53..664a741a3b0b 100644
--- a/drivers/gpu/drm/virtio/virtgpu_drv.c
+++ b/drivers/gpu/drm/virtio/virtgpu_drv.c
@@ -31,6 +31,7 @@
#include <linux/pci.h>

#include <drm/drm.h>
+#include <drm/drm_atomic_helper.h>
#include <drm/drm_drv.h>
#include <drm/drm_file.h>

@@ -136,6 +137,7 @@ static void virtio_gpu_remove(struct virtio_device *vdev)
struct drm_device *dev = vdev->priv;

drm_dev_unregister(dev);
+ drm_atomic_helper_shutdown(dev);
virtio_gpu_deinit(dev);
drm_dev_put(dev);
}
@@ -214,4 +216,6 @@ static struct drm_driver driver = {
.major = DRIVER_MAJOR,
.minor = DRIVER_MINOR,
.patchlevel = DRIVER_PATCHLEVEL,
+
+ .release = virtio_gpu_release,
};
diff --git a/drivers/gpu/drm/virtio/virtgpu_kms.c b/drivers/gpu/drm/virtio/virtgpu_kms.c
index 2f5773e43557..387f05a9cc18 100644
--- a/drivers/gpu/drm/virtio/virtgpu_kms.c
+++ b/drivers/gpu/drm/virtio/virtgpu_kms.c
@@ -237,6 +237,11 @@ void virtio_gpu_deinit(struct drm_device *dev)
flush_work(&vgdev->config_changed_work);
vgdev->vdev->config->reset(vgdev->vdev);
vgdev->vdev->config->del_vqs(vgdev->vdev);
+}
+
+void virtio_gpu_release(struct drm_device *dev)
+{
+ struct virtio_gpu_device *vgdev = dev->dev_private;

virtio_gpu_modeset_fini(vgdev);
virtio_gpu_free_vbufs(vgdev);
diff --git a/drivers/gpu/drm/virtio/virtgpu_vq.c b/drivers/gpu/drm/virtio/virtgpu_vq.c
index 5914e79d3429..619c6108d07e 100644
--- a/drivers/gpu/drm/virtio/virtgpu_vq.c
+++ b/drivers/gpu/drm/virtio/virtgpu_vq.c
@@ -319,8 +319,10 @@ static bool virtio_gpu_queue_ctrl_buffer_locked(struct virtio_gpu_device *vgdev,
bool notify = false;
int ret;

- if (!vgdev->vqs_ready)
+ if (!vgdev->vqs_ready) {
+ free_vbuf(vgdev, vbuf);
return notify;
+ }

sg_init_one(&vcmd, vbuf->buf, vbuf->size);
sgs[outcnt + incnt] = &vcmd;
@@ -447,8 +449,10 @@ static void virtio_gpu_queue_cursor(struct virtio_gpu_device *vgdev,
int ret;
int outcnt;

- if (!vgdev->vqs_ready)
+ if (!vgdev->vqs_ready) {
+ free_vbuf(vgdev, vbuf);
return;
+ }

sg_init_one(&ccmd, vbuf->buf, vbuf->size);
sgs[0] = &ccmd;
--
2.18.1