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Date:   Thu, 9 Apr 2020 09:17:49 +0200
From:   Daniel Vetter <daniel@ffwll.ch>
To:     John Stultz <john.stultz@linaro.org>
Cc:     lkml <linux-kernel@vger.kernel.org>,
        Xu YiPing <xuyiping@hisilicon.com>,
        Rongrong Zou <zourongrong@gmail.com>,
        Xinliang Liu <xinliang.liu@linaro.org>,
        Xinwei Kong <kong.kongxinwei@hisilicon.com>,
        Chen Feng <puck.chen@hisilicon.com>,
        David Airlie <airlied@linux.ie>,
        Daniel Vetter <daniel@ffwll.ch>,
        Sam Ravnborg <sam@ravnborg.org>,
        dri-devel <dri-devel@lists.freedesktop.org>
Subject: Re: [PATCH] drm: kirin: Revert change to add register connect helper
 functions
Message-ID: <20200409071749.GQ3456981@phenom.ffwll.local>
Mail-Followup-To: John Stultz <john.stultz@linaro.org>,
        lkml <linux-kernel@vger.kernel.org>,
        Xu YiPing <xuyiping@hisilicon.com>,
        Rongrong Zou <zourongrong@gmail.com>,
        Xinliang Liu <xinliang.liu@linaro.org>,
        Xinwei Kong <kong.kongxinwei@hisilicon.com>,
        Chen Feng <puck.chen@hisilicon.com>,
        David Airlie <airlied@linux.ie>, Sam Ravnborg <sam@ravnborg.org>,
        dri-devel <dri-devel@lists.freedesktop.org>
References: <20200409004306.18541-1-john.stultz@linaro.org>
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On Thu, Apr 09, 2020 at 12:43:06AM +0000, John Stultz wrote:
> Daniel noted[1] that commit d606dc9a6323 ("drm: kirin: Add
> register connect helper functions in drm init") was unnecessary
> and incorrect, as drm_dev_register does register connectors for
> us.
> 
> Thus, this patch reverts the change as suggested by Daniel.
> 
> [1]: https://lore.kernel.org/lkml/CAKMK7uHr5U-pPsxdQ4MpfK5v8iLjphDFug_3VTiUAf06nhS=yQ@mail.gmail.com/
> 
> Cc: Xu YiPing <xuyiping@hisilicon.com>
> Cc: Rongrong Zou <zourongrong@gmail.com>
> Cc: Xinliang Liu <xinliang.liu@linaro.org>
> Cc: Xinwei Kong <kong.kongxinwei@hisilicon.com>
> Cc: Chen Feng <puck.chen@hisilicon.com>
> Cc: David Airlie <airlied@linux.ie>
> Cc: Daniel Vetter <daniel@ffwll.ch>
> Cc: Sam Ravnborg <sam@ravnborg.org>
> Cc: dri-devel <dri-devel@lists.freedesktop.org>
> Signed-off-by: John Stultz <john.stultz@linaro.org>

Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>

Thanks for the quick fix!

Cheers, Daniel

> ---
>  .../gpu/drm/hisilicon/kirin/kirin_drm_ade.c   |  1 -
>  .../gpu/drm/hisilicon/kirin/kirin_drm_drv.c   | 43 -------------------
>  .../gpu/drm/hisilicon/kirin/kirin_drm_drv.h   |  1 -
>  3 files changed, 45 deletions(-)
> 
> diff --git a/drivers/gpu/drm/hisilicon/kirin/kirin_drm_ade.c b/drivers/gpu/drm/hisilicon/kirin/kirin_drm_ade.c
> index 86000127d4ee..c339e632522a 100644
> --- a/drivers/gpu/drm/hisilicon/kirin/kirin_drm_ade.c
> +++ b/drivers/gpu/drm/hisilicon/kirin/kirin_drm_ade.c
> @@ -940,7 +940,6 @@ static struct drm_driver ade_driver = {
>  };
>  
>  struct kirin_drm_data ade_driver_data = {
> -	.register_connects = false,
>  	.num_planes = ADE_CH_NUM,
>  	.prim_plane = ADE_CH1,
>  	.channel_formats = channel_formats,
> diff --git a/drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.c b/drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.c
> index d3145ae877d7..4349da3e2379 100644
> --- a/drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.c
> +++ b/drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.c
> @@ -219,40 +219,6 @@ static int kirin_drm_kms_cleanup(struct drm_device *dev)
>  	return 0;
>  }
>  
> -static int kirin_drm_connectors_register(struct drm_device *dev)
> -{
> -	struct drm_connector *connector;
> -	struct drm_connector *failed_connector;
> -	struct drm_connector_list_iter conn_iter;
> -	int ret;
> -
> -	mutex_lock(&dev->mode_config.mutex);
> -	drm_connector_list_iter_begin(dev, &conn_iter);
> -	drm_for_each_connector_iter(connector, &conn_iter) {
> -		ret = drm_connector_register(connector);
> -		if (ret) {
> -			failed_connector = connector;
> -			goto err;
> -		}
> -	}
> -	drm_connector_list_iter_end(&conn_iter);
> -	mutex_unlock(&dev->mode_config.mutex);
> -
> -	return 0;
> -
> -err:
> -	drm_connector_list_iter_begin(dev, &conn_iter);
> -	drm_for_each_connector_iter(connector, &conn_iter) {
> -		if (failed_connector == connector)
> -			break;
> -		drm_connector_unregister(connector);
> -	}
> -	drm_connector_list_iter_end(&conn_iter);
> -	mutex_unlock(&dev->mode_config.mutex);
> -
> -	return ret;
> -}
> -
>  static int kirin_drm_bind(struct device *dev)
>  {
>  	struct kirin_drm_data *driver_data;
> @@ -279,17 +245,8 @@ static int kirin_drm_bind(struct device *dev)
>  
>  	drm_fbdev_generic_setup(drm_dev, 32);
>  
> -	/* connectors should be registered after drm device register */
> -	if (driver_data->register_connects) {
> -		ret = kirin_drm_connectors_register(drm_dev);
> -		if (ret)
> -			goto err_drm_dev_unregister;
> -	}
> -
>  	return 0;
>  
> -err_drm_dev_unregister:
> -	drm_dev_unregister(drm_dev);
>  err_kms_cleanup:
>  	kirin_drm_kms_cleanup(drm_dev);
>  err_drm_dev_put:
> diff --git a/drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.h b/drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.h
> index 4d5c05a24065..dee8ec2f7f2e 100644
> --- a/drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.h
> +++ b/drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.h
> @@ -37,7 +37,6 @@ struct kirin_drm_data {
>  	u32 channel_formats_cnt;
>  	int config_max_width;
>  	int config_max_height;
> -	bool register_connects;
>  	u32 num_planes;
>  	u32 prim_plane;
>  
> -- 
> 2.17.1
> 

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