[PATCH 1/7] drm: Automatically register/unregister all connectors

[Daniel Vetter]

On Fri, Jun 17, 2016 at 09:25:17AM +0100, Chris Wilson wrote:
> As the drm_connector is now safe for multiple calls to
> register/unregister, automatically perform a registration on all known
> connectors drm drv_register (and unregister from drm_drv_unregister).
> Drivers can still call drm_connector_register() and
> drm_connector_unregister() individually, or defer as required.
> 
> Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
> Cc: Daniel Vetter <daniel.vetter at ffwll.ch>
> Cc: dri-devel at lists.freedesktop.org

Applied to drm-misc. I'll let driver maintainers have a little bit more
time to ack or test the patches before I vacuum them up.

Thanks, Daniel

> ---
>  drivers/gpu/drm/drm_crtc.c |  6 +++---
>  drivers/gpu/drm/drm_drv.c  | 10 +++++-----
>  2 files changed, 8 insertions(+), 8 deletions(-)
> 
> diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c
> index 316dea9bea08..e7c862bd2f19 100644
> --- a/drivers/gpu/drm/drm_crtc.c
> +++ b/drivers/gpu/drm/drm_crtc.c
> @@ -1047,9 +1047,9 @@ EXPORT_SYMBOL(drm_connector_unregister);
>   * @dev: drm device
>   *
>   * This function registers all connectors in sysfs and other places so that
> - * userspace can start to access them. Drivers can call it after calling
> - * drm_dev_register() to complete the device registration, if they don't call
> - * drm_connector_register() on each connector individually.
> + * userspace can start to access them. drm_connector_register_all() is called
> + * automatically from drm_dev_register() to complete the device registration,
> + * if they don't call drm_connector_register() on each connector individually.
>   *
>   * When a device is unplugged and should be removed from userspace access,
>   * call drm_connector_unregister_all(), which is the inverse of this
> diff --git a/drivers/gpu/drm/drm_drv.c b/drivers/gpu/drm/drm_drv.c
> index 40fb4352432c..2067ff089380 100644
> --- a/drivers/gpu/drm/drm_drv.c
> +++ b/drivers/gpu/drm/drm_drv.c
> @@ -650,11 +650,7 @@ EXPORT_SYMBOL(drm_dev_unref);
>   *
>   * Register the DRM device @dev with the system, advertise device to user-space
>   * and start normal device operation. @dev must be allocated via drm_dev_alloc()
> - * previously. Right after drm_dev_register() the driver should call
> - * drm_connector_register_all() to register all connectors in sysfs. This is
> - * a separate call for backward compatibility with drivers still using
> - * the deprecated ->load() callback, where connectors are registered from within
> - * the ->load() callback.
> + * previously.
>   *
>   * Never call this twice on any device!
>   *
> @@ -691,6 +687,8 @@ int drm_dev_register(struct drm_device *dev, unsigned long flags)
>  			goto err_minors;
>  	}
>  
> +	drm_connector_register_all(dev);
> +
>  	ret = 0;
>  	goto out_unlock;
>  
> @@ -721,6 +719,8 @@ void drm_dev_unregister(struct drm_device *dev)
>  
>  	drm_lastclose(dev);
>  
> +	drm_connector_unregister_all(dev);
> +
>  	if (dev->driver->unload)
>  		dev->driver->unload(dev);
>  
> -- 
> 2.8.1
> 

-- 
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch