Re: [PATCH 4/4] drm: remove all control node code

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On Fri, Apr 20, 2018 at 08:51:59AM +0200, Daniel Vetter wrote:
> With the ioctl and driver prep done, we can remove everything else.
> 
> Signed-off-by: Daniel Vetter <daniel.vetter@xxxxxxxxx>
> Cc: Gustavo Padovan <gustavo@xxxxxxxxxxx>
> Cc: Maarten Lankhorst <maarten.lankhorst@xxxxxxxxxxxxxxx>
> Cc: Sean Paul <seanpaul@xxxxxxxxxxxx>
> Cc: David Airlie <airlied@xxxxxxxx>

Sorry, I missed this on my first pass.

Reviewed-by: Sean Paul <seanpaul@xxxxxxxxxxxx>

> ---
>  drivers/gpu/drm/drm_drv.c         | 10 ----------
>  drivers/gpu/drm/drm_framebuffer.c |  3 +--
>  drivers/gpu/drm/drm_ioctl.c       |  8 +-------
>  drivers/gpu/drm/drm_sysfs.c       |  4 +---
>  include/drm/drm_device.h          |  1 -
>  include/drm/drm_file.h            | 13 -------------
>  include/drm/drm_ioctl.h           |  7 -------
>  7 files changed, 3 insertions(+), 43 deletions(-)
> 
> diff --git a/drivers/gpu/drm/drm_drv.c b/drivers/gpu/drm/drm_drv.c
> index 32a83b41ab61..f6910ebe4d0e 100644
> --- a/drivers/gpu/drm/drm_drv.c
> +++ b/drivers/gpu/drm/drm_drv.c
> @@ -99,8 +99,6 @@ static struct drm_minor **drm_minor_get_slot(struct drm_device *dev,
>  		return &dev->primary;
>  	case DRM_MINOR_RENDER:
>  		return &dev->render;
> -	case DRM_MINOR_CONTROL:
> -		return &dev->control;
>  	default:
>  		BUG();
>  	}
> @@ -567,7 +565,6 @@ int drm_dev_init(struct drm_device *dev,
>  err_minors:
>  	drm_minor_free(dev, DRM_MINOR_PRIMARY);
>  	drm_minor_free(dev, DRM_MINOR_RENDER);
> -	drm_minor_free(dev, DRM_MINOR_CONTROL);
>  	drm_fs_inode_free(dev->anon_inode);
>  err_free:
>  	mutex_destroy(&dev->master_mutex);
> @@ -603,7 +600,6 @@ void drm_dev_fini(struct drm_device *dev)
>  
>  	drm_minor_free(dev, DRM_MINOR_PRIMARY);
>  	drm_minor_free(dev, DRM_MINOR_RENDER);
> -	drm_minor_free(dev, DRM_MINOR_CONTROL);
>  
>  	mutex_destroy(&dev->master_mutex);
>  	mutex_destroy(&dev->ctxlist_mutex);
> @@ -796,10 +792,6 @@ int drm_dev_register(struct drm_device *dev, unsigned long flags)
>  
>  	mutex_lock(&drm_global_mutex);
>  
> -	ret = drm_minor_register(dev, DRM_MINOR_CONTROL);
> -	if (ret)
> -		goto err_minors;
> -
>  	ret = drm_minor_register(dev, DRM_MINOR_RENDER);
>  	if (ret)
>  		goto err_minors;
> @@ -837,7 +829,6 @@ int drm_dev_register(struct drm_device *dev, unsigned long flags)
>  	remove_compat_control_link(dev);
>  	drm_minor_unregister(dev, DRM_MINOR_PRIMARY);
>  	drm_minor_unregister(dev, DRM_MINOR_RENDER);
> -	drm_minor_unregister(dev, DRM_MINOR_CONTROL);
>  out_unlock:
>  	mutex_unlock(&drm_global_mutex);
>  	return ret;
> @@ -882,7 +873,6 @@ void drm_dev_unregister(struct drm_device *dev)
>  	remove_compat_control_link(dev);
>  	drm_minor_unregister(dev, DRM_MINOR_PRIMARY);
>  	drm_minor_unregister(dev, DRM_MINOR_RENDER);
> -	drm_minor_unregister(dev, DRM_MINOR_CONTROL);
>  }
>  EXPORT_SYMBOL(drm_dev_unregister);
>  
> diff --git a/drivers/gpu/drm/drm_framebuffer.c b/drivers/gpu/drm/drm_framebuffer.c
> index 8c4d32adcc17..bfedceff87bb 100644
> --- a/drivers/gpu/drm/drm_framebuffer.c
> +++ b/drivers/gpu/drm/drm_framebuffer.c
> @@ -484,8 +484,7 @@ int drm_mode_getfb(struct drm_device *dev,
>  	 * backwards-compatibility reasons, we cannot make GET_FB() privileged,
>  	 * so just return an invalid handle for non-masters.
>  	 */
> -	if (!drm_is_current_master(file_priv) && !capable(CAP_SYS_ADMIN) &&
> -	    !drm_is_control_client(file_priv)) {
> +	if (!drm_is_current_master(file_priv) && !capable(CAP_SYS_ADMIN)) {
>  		r->handle = 0;
>  		ret = 0;
>  		goto out;
> diff --git a/drivers/gpu/drm/drm_ioctl.c b/drivers/gpu/drm/drm_ioctl.c
> index 920279666cae..01b61c12d635 100644
> --- a/drivers/gpu/drm/drm_ioctl.c
> +++ b/drivers/gpu/drm/drm_ioctl.c
> @@ -510,13 +510,7 @@ int drm_ioctl_permit(u32 flags, struct drm_file *file_priv)
>  
>  	/* MASTER is only for master or control clients */
>  	if (unlikely((flags & DRM_MASTER) &&
> -		     !drm_is_current_master(file_priv) &&
> -		     !drm_is_control_client(file_priv)))
> -		return -EACCES;
> -
> -	/* Control clients must be explicitly allowed */
> -	if (unlikely(!(flags & DRM_CONTROL_ALLOW) &&
> -		     drm_is_control_client(file_priv)))
> +		     !drm_is_current_master(file_priv)))
>  		return -EACCES;
>  
>  	/* Render clients must be explicitly allowed */
> diff --git a/drivers/gpu/drm/drm_sysfs.c b/drivers/gpu/drm/drm_sysfs.c
> index 1c5b5ce1fd7f..b3c1daad1169 100644
> --- a/drivers/gpu/drm/drm_sysfs.c
> +++ b/drivers/gpu/drm/drm_sysfs.c
> @@ -331,9 +331,7 @@ struct device *drm_sysfs_minor_alloc(struct drm_minor *minor)
>  	struct device *kdev;
>  	int r;
>  
> -	if (minor->type == DRM_MINOR_CONTROL)
> -		minor_str = "controlD%d";
> -	else if (minor->type == DRM_MINOR_RENDER)
> +	if (minor->type == DRM_MINOR_RENDER)
>  		minor_str = "renderD%d";
>  	else
>  		minor_str = "card%d";
> diff --git a/include/drm/drm_device.h b/include/drm/drm_device.h
> index 3a0eac2885b7..858ba19a3e29 100644
> --- a/include/drm/drm_device.h
> +++ b/include/drm/drm_device.h
> @@ -38,7 +38,6 @@ struct drm_device {
>  	struct device *dev;		/**< Device structure of bus-device */
>  	struct drm_driver *driver;	/**< DRM driver managing the device */
>  	void *dev_private;		/**< DRM driver private data */
> -	struct drm_minor *control;		/**< Control node */
>  	struct drm_minor *primary;		/**< Primary node */
>  	struct drm_minor *render;		/**< Render node */
>  	bool registered;
> diff --git a/include/drm/drm_file.h b/include/drm/drm_file.h
> index 5176c3797680..99ab50cbab00 100644
> --- a/include/drm/drm_file.h
> +++ b/include/drm/drm_file.h
> @@ -49,7 +49,6 @@ struct device;
>  
>  enum drm_minor_type {
>  	DRM_MINOR_PRIMARY,
> -	DRM_MINOR_CONTROL,
>  	DRM_MINOR_RENDER,
>  };
>  
> @@ -348,18 +347,6 @@ static inline bool drm_is_render_client(const struct drm_file *file_priv)
>  	return file_priv->minor->type == DRM_MINOR_RENDER;
>  }
>  
> -/**
> - * drm_is_control_client - is this an open file of the control node
> - * @file_priv: DRM file
> - *
> - * Control nodes are deprecated and in the process of getting removed from the
> - * DRM userspace API. Do not ever use!
> - */
> -static inline bool drm_is_control_client(const struct drm_file *file_priv)
> -{
> -	return file_priv->minor->type == DRM_MINOR_CONTROL;
> -}
> -
>  int drm_open(struct inode *inode, struct file *filp);
>  ssize_t drm_read(struct file *filp, char __user *buffer,
>  		 size_t count, loff_t *offset);
> diff --git a/include/drm/drm_ioctl.h b/include/drm/drm_ioctl.h
> index add42809642a..fafb6f592c4b 100644
> --- a/include/drm/drm_ioctl.h
> +++ b/include/drm/drm_ioctl.h
> @@ -108,13 +108,6 @@ enum drm_ioctl_flags {
>  	 * This is equivalent to callers with the SYSADMIN capability.
>  	 */
>  	DRM_ROOT_ONLY		= BIT(2),
> -	/**
> -	 * @DRM_CONTROL_ALLOW:
> -	 *
> -	 * Deprecated, do not use. Control nodes are in the process of getting
> -	 * removed.
> -	 */
> -	DRM_CONTROL_ALLOW	= BIT(3),
>  	/**
>  	 * @DRM_UNLOCKED:
>  	 *
> -- 
> 2.16.2
> 

-- 
Sean Paul, Software Engineer, Google / Chromium OS
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