On Mon, Dec 28, 2020 at 07:04:41PM +0800, Tian Tao wrote:
> Using drmm_mode_config_init() sets up managed release of modesetting
> resources.
>
> Signed-off-by: Tian Tao <tiantao6@xxxxxxxxxxxxx>
This changes the order of the cleanup actions, so most likely will break
really badly. You can only move a cleanup action safely over to drmm_ if
it is the last thing (at the time the patch is applied) done before
cleanup is finished. There's a _lot_ of code that's run after
qxl_modeset_fini.
-Daniel
> ---
> drivers/gpu/drm/qxl/qxl_display.c | 5 +++--
> 1 file changed, 3 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/gpu/drm/qxl/qxl_display.c b/drivers/gpu/drm/qxl/qxl_display.c
> index 012bce0..38d6b59 100644
> --- a/drivers/gpu/drm/qxl/qxl_display.c
> +++ b/drivers/gpu/drm/qxl/qxl_display.c
> @@ -1195,7 +1195,9 @@ int qxl_modeset_init(struct qxl_device *qdev)
> int i;
> int ret;
>
> - drm_mode_config_init(&qdev->ddev);
> + ret = drmm_mode_config_init(&qdev->ddev);
> + if (ret)
> + return ret;
>
> ret = qxl_create_monitors_object(qdev);
> if (ret)
> @@ -1228,5 +1230,4 @@ int qxl_modeset_init(struct qxl_device *qdev)
> void qxl_modeset_fini(struct qxl_device *qdev)
> {
> qxl_destroy_monitors_object(qdev);
> - drm_mode_config_cleanup(&qdev->ddev);
> }
> --
> 2.7.4
>
--
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch
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