Re: [PATCH 32/51] drm/mcde: Drop explicit drm_mode_config_cleanup call

From: Sam Ravnborg <sam@ravnborg.org>
To: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Intel Graphics Development <intel-gfx@lists.freedesktop.org>,
	DRI Development <dri-devel@lists.freedesktop.org>,
	Laurent Pinchart <laurent.pinchart@ideasonboard.com>,
	Thomas Zimmermann <tzimmermann@suse.de>,
	Daniel Vetter <daniel.vetter@intel.com>
Subject: Re: [PATCH 32/51] drm/mcde: Drop explicit drm_mode_config_cleanup call
Date: Fri, 6 Mar 2020 21:18:41 +0100	[thread overview]
Message-ID: <20200306201841.GE13014@ravnborg.org> (raw)
In-Reply-To: <20200302222631.3861340-33-daniel.vetter@ffwll.ch>

On Mon, Mar 02, 2020 at 11:26:12PM +0100, Daniel Vetter wrote:
> Allows us to drop the drm_driver.release callback.
> 
> This is made possible by a preceeding patch which added a drmm_
> cleanup action to drm_mode_config_init(), hence all we need to do to
> ensure that drm_mode_config_cleanup() is run on final drm_device
> cleanup is check the new error code for _init().
> 
> v2: Explain why this cleanup is possible (Laurent).
> 
> v3: Use drmm_mode_config_init() for more clarity (Sam, Thomas)
> 
> Cc: Sam Ravnborg <sam@ravnborg.org>
> Cc: Thomas Zimmermann <tzimmermann@suse.de>
> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> (v2)
> Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
> Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
> Cc: Linus Walleij <linus.walleij@linaro.org>

Acked-by: Sam Ravnborg <sam@ravnborg.org>

> ---
>  drivers/gpu/drm/mcde/mcde_drv.c | 22 ++++++----------------
>  1 file changed, 6 insertions(+), 16 deletions(-)
> 
> diff --git a/drivers/gpu/drm/mcde/mcde_drv.c b/drivers/gpu/drm/mcde/mcde_drv.c
> index a543ebf3d541..03d2e1a00810 100644
> --- a/drivers/gpu/drm/mcde/mcde_drv.c
> +++ b/drivers/gpu/drm/mcde/mcde_drv.c
> @@ -184,13 +184,13 @@ static int mcde_modeset_init(struct drm_device *drm)
>  	ret = drm_vblank_init(drm, 1);
>  	if (ret) {
>  		dev_err(drm->dev, "failed to init vblank\n");
> -		goto out_config;
> +		return ret;
>  	}
>  
>  	ret = mcde_display_init(drm);
>  	if (ret) {
>  		dev_err(drm->dev, "failed to init display\n");
> -		goto out_config;
> +		return ret;
>  	}
>  
>  	/*
> @@ -204,7 +204,7 @@ static int mcde_modeset_init(struct drm_device *drm)
>  						    mcde->bridge);
>  	if (ret) {
>  		dev_err(drm->dev, "failed to attach display output bridge\n");
> -		goto out_config;
> +		return ret;
>  	}
>  
>  	drm_mode_config_reset(drm);
> @@ -212,17 +212,6 @@ static int mcde_modeset_init(struct drm_device *drm)
>  	drm_fbdev_generic_setup(drm, 32);
>  
>  	return 0;
> -
> -out_config:
> -	drm_mode_config_cleanup(drm);
> -	return ret;
> -}
> -
> -static void mcde_release(struct drm_device *drm)
> -{
> -	struct mcde *mcde = drm->dev_private;
> -
> -	drm_mode_config_cleanup(drm);
>  }
>  
>  DEFINE_DRM_GEM_CMA_FOPS(drm_fops);
> @@ -230,7 +219,6 @@ DEFINE_DRM_GEM_CMA_FOPS(drm_fops);
>  static struct drm_driver mcde_drm_driver = {
>  	.driver_features =
>  		DRIVER_MODESET | DRIVER_GEM | DRIVER_ATOMIC,
> -	.release = mcde_release,
>  	.lastclose = drm_fb_helper_lastclose,
>  	.ioctls = NULL,
>  	.fops = &drm_fops,
> @@ -258,7 +246,9 @@ static int mcde_drm_bind(struct device *dev)
>  	struct drm_device *drm = dev_get_drvdata(dev);
>  	int ret;
>  
> -	drm_mode_config_init(drm);
> +	ret = drmm_mode_config_init(drm);
> +	if (ret)
> +		return ret;
>  
>  	ret = component_bind_all(drm->dev, drm);
>  	if (ret) {
> -- 
> 2.24.1
_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/dri-devel