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

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On Wed, May 02, 2018 at 04:10:45PM -0400, Sean Paul wrote:
> 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>

Thanks for the review, pulled all 5 patches into drm-misc-next.
-Daniel

> 
> > ---
> >  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

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