linux-kernel - Re: [PATCH v4 14/27] drm/bridge: ti-sn65dsi86: Move all the chip-related init to the start

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <YILclD/XF1Ww6H7g@builder.lan>
Date:   Fri, 23 Apr 2021 09:41:24 -0500
From:   Bjorn Andersson <bjorn.andersson@...aro.org>
To:     Douglas Anderson <dianders@...omium.org>
Cc:     Andrzej Hajda <a.hajda@...sung.com>,
        Neil Armstrong <narmstrong@...libre.com>,
        Laurent Pinchart <Laurent.pinchart@...asonboard.com>,
        Jonas Karlman <jonas@...boo.se>,
        Jernej Skrabec <jernej.skrabec@...l.net>,
        Sam Ravnborg <sam@...nborg.org>, Wolfram Sang <wsa@...nel.org>,
        Stephen Boyd <swboyd@...omium.org>, robdclark@...omium.org,
        Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
        Stanislav Lisovskiy <stanislav.lisovskiy@...el.com>,
        Steev Klimaszewski <steev@...i.org>,
        linux-arm-msm@...r.kernel.org, Linus W <linus.walleij@...aro.org>,
        Daniel Vetter <daniel@...ll.ch>,
        David Airlie <airlied@...ux.ie>,
        Robert Foss <robert.foss@...aro.org>,
        dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v4 14/27] drm/bridge: ti-sn65dsi86: Move all the
 chip-related init to the start

On Fri 16 Apr 17:39 CDT 2021, Douglas Anderson wrote:

> This is just code motion of the probe routine to move all the things
> that are for the "whole chip" (instead of the GPIO parts or the
> MIPI-to-eDP parts) together at the start of probe. This is in
> preparation for breaking the driver into sub-drivers.
> 
> Since we're using devm for all of the "whole chip" stuff this is
> actually quite easy now.
> 

Reviewed-by: Bjorn Andersson <bjorn.andersson@...aro.org>

Regards,
Bjorn

> Signed-off-by: Douglas Anderson <dianders@...omium.org>
> ---
> 
> (no changes since v1)
> 
>  drivers/gpu/drm/bridge/ti-sn65dsi86.c | 26 +++++++++++++-------------
>  1 file changed, 13 insertions(+), 13 deletions(-)
> 
> diff --git a/drivers/gpu/drm/bridge/ti-sn65dsi86.c b/drivers/gpu/drm/bridge/ti-sn65dsi86.c
> index 53f1f7b3022f..57bc489a0412 100644
> --- a/drivers/gpu/drm/bridge/ti-sn65dsi86.c
> +++ b/drivers/gpu/drm/bridge/ti-sn65dsi86.c
> @@ -1253,12 +1253,6 @@ static int ti_sn65dsi86_probe(struct i2c_client *client,
>  		return PTR_ERR(pdata->regmap);
>  	}
>  
> -	ret = drm_of_find_panel_or_bridge(dev->of_node, 1, 0, &pdata->panel, NULL);
> -	if (ret) {
> -		DRM_ERROR("could not find any panel node\n");
> -		return ret;
> -	}
> -
>  	pdata->enable_gpio = devm_gpiod_get(dev, "enable", GPIOD_OUT_LOW);
>  	if (IS_ERR(pdata->enable_gpio)) {
>  		DRM_ERROR("failed to get enable gpio from DT\n");
> @@ -1266,8 +1260,6 @@ static int ti_sn65dsi86_probe(struct i2c_client *client,
>  		return ret;
>  	}
>  
> -	ti_sn_bridge_parse_lanes(pdata, dev->of_node);
> -
>  	ret = ti_sn65dsi86_parse_regulators(pdata);
>  	if (ret) {
>  		DRM_ERROR("failed to parse regulators\n");
> @@ -1278,12 +1270,22 @@ static int ti_sn65dsi86_probe(struct i2c_client *client,
>  	if (IS_ERR(pdata->refclk))
>  		return PTR_ERR(pdata->refclk);
>  
> -	ret = ti_sn_bridge_parse_dsi_host(pdata);
> +	pm_runtime_enable(dev);
> +	ret = devm_add_action_or_reset(dev, ti_sn65dsi86_runtime_disable, dev);
>  	if (ret)
>  		return ret;
>  
> -	pm_runtime_enable(dev);
> -	ret = devm_add_action_or_reset(dev, ti_sn65dsi86_runtime_disable, dev);
> +	ti_sn65dsi86_debugfs_init(pdata);
> +
> +	ret = drm_of_find_panel_or_bridge(dev->of_node, 1, 0, &pdata->panel, NULL);
> +	if (ret) {
> +		DRM_ERROR("could not find any panel node\n");
> +		return ret;
> +	}
> +
> +	ti_sn_bridge_parse_lanes(pdata, dev->of_node);
> +
> +	ret = ti_sn_bridge_parse_dsi_host(pdata);
>  	if (ret)
>  		return ret;
>  
> @@ -1301,8 +1303,6 @@ static int ti_sn65dsi86_probe(struct i2c_client *client,
>  
>  	drm_bridge_add(&pdata->bridge);
>  
> -	ti_sn65dsi86_debugfs_init(pdata);
> -
>  	return 0;
>  }
>  
> -- 
> 2.31.1.368.gbe11c130af-goog
>