Re: [PATCH 31/51] drm/ingenic: 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>,
	Paul Cercueil <paul@crapouillou.net>,
	Laurent Pinchart <laurent.pinchart@ideasonboard.com>,
	Thomas Zimmermann <tzimmermann@suse.de>,
	Daniel Vetter <daniel.vetter@intel.com>
Subject: Re: [PATCH 31/51] drm/ingenic: Drop explicit drm_mode_config_cleanup call
Date: Fri, 6 Mar 2020 21:17:03 +0100	[thread overview]
Message-ID: <20200306201703.GD13014@ravnborg.org> (raw)
In-Reply-To: <20200302222631.3861340-32-daniel.vetter@ffwll.ch>

On Mon, Mar 02, 2020 at 11:26:11PM +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: Paul Cercueil <paul@crapouillou.net> (v2)
> Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
> Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
> Cc: Paul Cercueil <paul@crapouillou.net>

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

> ---
>  drivers/gpu/drm/ingenic/ingenic-drm.c | 11 ++++-------
>  1 file changed, 4 insertions(+), 7 deletions(-)
> 
> diff --git a/drivers/gpu/drm/ingenic/ingenic-drm.c b/drivers/gpu/drm/ingenic/ingenic-drm.c
> index 192aaa4421a3..a9bc6623b488 100644
> --- a/drivers/gpu/drm/ingenic/ingenic-drm.c
> +++ b/drivers/gpu/drm/ingenic/ingenic-drm.c
> @@ -489,11 +489,6 @@ static irqreturn_t ingenic_drm_irq_handler(int irq, void *arg)
>  	return IRQ_HANDLED;
>  }
>  
> -static void ingenic_drm_release(struct drm_device *drm)
> -{
> -	drm_mode_config_cleanup(drm);
> -}
> -
>  static int ingenic_drm_enable_vblank(struct drm_crtc *crtc)
>  {
>  	struct ingenic_drm *priv = drm_crtc_get_priv(crtc);
> @@ -537,7 +532,6 @@ static struct drm_driver ingenic_drm_driver_data = {
>  	.gem_prime_mmap		= drm_gem_cma_prime_mmap,
>  
>  	.irq_handler		= ingenic_drm_irq_handler,
> -	.release		= ingenic_drm_release,
>  };
>  
>  static const struct drm_plane_funcs ingenic_drm_primary_plane_funcs = {
> @@ -638,7 +632,10 @@ static int ingenic_drm_probe(struct platform_device *pdev)
>  	}
>  	drmm_add_final_kfree(drm, priv);
>  
> -	drm_mode_config_init(drm);
> +	ret = drmm_mode_config_init(drm);
> +	if (ret)
> +		return ret;
> +
>  	drm->mode_config.min_width = 0;
>  	drm->mode_config.min_height = 0;
>  	drm->mode_config.max_width = soc_info->max_width;
> -- 
> 2.24.1
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