diff options
Diffstat (limited to 'drivers/gpu/drm')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nouveau_drm.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nouveau_drm.c b/drivers/gpu/drm/nouveau/nouveau_drm.c index 4c69ac2a8295..e7efd9ede8e4 100644 --- a/drivers/gpu/drm/nouveau/nouveau_drm.c +++ b/drivers/gpu/drm/nouveau/nouveau_drm.c @@ -633,6 +633,7 @@ fail_alloc: static void nouveau_drm_device_fini(struct drm_device *dev) { + struct nouveau_cli *cli, *temp_cli; struct nouveau_drm *drm = nouveau_drm(dev); if (nouveau_pmops_runtime()) { @@ -657,6 +658,24 @@ nouveau_drm_device_fini(struct drm_device *dev) nouveau_ttm_fini(drm); nouveau_vga_fini(drm); + /* + * There may be existing clients from as-yet unclosed files. For now, + * clean them up here rather than deferring until the file is closed, + * but this likely not correct if we want to support hot-unplugging + * properly. + */ + mutex_lock(&drm->clients_lock); + list_for_each_entry_safe(cli, temp_cli, &drm->clients, head) { + list_del(&cli->head); + mutex_lock(&cli->mutex); + if (cli->abi16) + nouveau_abi16_fini(cli->abi16); + mutex_unlock(&cli->mutex); + nouveau_cli_fini(cli); + kfree(cli); + } + mutex_unlock(&drm->clients_lock); + nouveau_cli_fini(&drm->client); nouveau_cli_fini(&drm->master); nvif_parent_dtor(&drm->parent); @@ -1112,6 +1131,16 @@ nouveau_drm_postclose(struct drm_device *dev, struct drm_file *fpriv) { struct nouveau_cli *cli = nouveau_cli(fpriv); struct nouveau_drm *drm = nouveau_drm(dev); + int dev_index; + + /* + * The device is gone, and as it currently stands all clients are + * cleaned up in the removal codepath. In the future this may change + * so that we can support hot-unplugging, but for now we immediately + * return to avoid a double-free situation. + */ + if (!drm_dev_enter(dev, &dev_index)) + return; pm_runtime_get_sync(dev->dev); @@ -1128,6 +1157,7 @@ nouveau_drm_postclose(struct drm_device *dev, struct drm_file *fpriv) kfree(cli); pm_runtime_mark_last_busy(dev->dev); pm_runtime_put_autosuspend(dev->dev); + drm_dev_exit(dev_index); } static const struct drm_ioctl_desc |