linux-kernel - Re: [PATCH v4 13/27] drm/bridge: ti-sn65dsi86: Use devm to do our runtime

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Message-ID: <YILcGg9tBRUasU5Q@builder.lan>
Date:   Fri, 23 Apr 2021 09:39:22 -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 13/27] drm/bridge: ti-sn65dsi86: Use devm to do our
 runtime_disable

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

> There's no devm_runtime_enable(), but it's easy to use
> devm_add_action_or_reset() and means we don't need to worry about the
> disable in our remove() routine or in error paths.
> 
> No functional changes intended by this change.
> 

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 | 14 +++++++++-----
>  1 file changed, 9 insertions(+), 5 deletions(-)
> 
> diff --git a/drivers/gpu/drm/bridge/ti-sn65dsi86.c b/drivers/gpu/drm/bridge/ti-sn65dsi86.c
> index a200e88fd006..53f1f7b3022f 100644
> --- a/drivers/gpu/drm/bridge/ti-sn65dsi86.c
> +++ b/drivers/gpu/drm/bridge/ti-sn65dsi86.c
> @@ -1223,6 +1223,11 @@ static void ti_sn_bridge_parse_lanes(struct ti_sn65dsi86 *pdata,
>  	pdata->ln_polrs = ln_polrs;
>  }
>  
> +static void ti_sn65dsi86_runtime_disable(void *data)
> +{
> +	pm_runtime_disable(data);
> +}
> +
>  static int ti_sn65dsi86_probe(struct i2c_client *client,
>  			      const struct i2c_device_id *id)
>  {
> @@ -1278,12 +1283,13 @@ static int ti_sn65dsi86_probe(struct i2c_client *client,
>  		return ret;
>  
>  	pm_runtime_enable(dev);
> +	ret = devm_add_action_or_reset(dev, ti_sn65dsi86_runtime_disable, dev);
> +	if (ret)
> +		return ret;
>  
>  	ret = ti_sn_setup_gpio_controller(pdata);
> -	if (ret) {
> -		pm_runtime_disable(dev);
> +	if (ret)
>  		return ret;
> -	}
>  
>  	pdata->aux.name = "ti-sn65dsi86-aux";
>  	pdata->aux.dev = dev;
> @@ -1316,8 +1322,6 @@ static int ti_sn65dsi86_remove(struct i2c_client *client)
>  
>  	drm_bridge_remove(&pdata->bridge);
>  
> -	pm_runtime_disable(pdata->dev);
> -
>  	of_node_put(pdata->host_node);
>  
>  	return 0;
> -- 
> 2.31.1.368.gbe11c130af-goog
>