linux-kernel - Re: [PATCH] drm: panel: nt36523: use devm_mipi_dsi

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Message-ID: <e6d37d13-a150-468f-93c8-f8109996b974@linaro.org>
Date: Fri, 13 Sep 2024 11:09:19 +0200
From: Neil Armstrong <neil.armstrong@...aro.org>
To: Jianhua Lu <lujianhua000@...il.com>,
 Jessica Zhang <quic_jesszhan@...cinc.com>,
 Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
 Maxime Ripard <mripard@...nel.org>, Thomas Zimmermann <tzimmermann@...e.de>,
 David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>
Cc: dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] drm: panel: nt36523: use devm_mipi_dsi_* function to
 register and attach dsi

On 04/09/2024 16:29, Jianhua Lu wrote:
> Switch to devm_mipi_dsi_* function, we don't need to detach and
> unregister dsi manually any more.
> 
> Signed-off-by: Jianhua Lu <lujianhua000@...il.com>
> ---
>   drivers/gpu/drm/panel/panel-novatek-nt36523.c | 16 ++--------------
>   1 file changed, 2 insertions(+), 14 deletions(-)
> 
> diff --git a/drivers/gpu/drm/panel/panel-novatek-nt36523.c b/drivers/gpu/drm/panel/panel-novatek-nt36523.c
> index 18bd2ee71201..04f1d2676c78 100644
> --- a/drivers/gpu/drm/panel/panel-novatek-nt36523.c
> +++ b/drivers/gpu/drm/panel/panel-novatek-nt36523.c
> @@ -1095,18 +1095,6 @@ static int nt36523_unprepare(struct drm_panel *panel)
>   static void nt36523_remove(struct mipi_dsi_device *dsi)
>   {
>   	struct panel_info *pinfo = mipi_dsi_get_drvdata(dsi);
> -	int ret;
> -
> -	ret = mipi_dsi_detach(pinfo->dsi[0]);
> -	if (ret < 0)
> -		dev_err(&dsi->dev, "failed to detach from DSI0 host: %d\n", ret);
> -
> -	if (pinfo->desc->is_dual_dsi) {
> -		ret = mipi_dsi_detach(pinfo->dsi[1]);
> -		if (ret < 0)
> -			dev_err(&pinfo->dsi[1]->dev, "failed to detach from DSI1 host: %d\n", ret);
> -		mipi_dsi_device_unregister(pinfo->dsi[1]);
> -	}
>   
>   	drm_panel_remove(&pinfo->panel);
>   }
> @@ -1251,7 +1239,7 @@ static int nt36523_probe(struct mipi_dsi_device *dsi)
>   		if (!dsi1_host)
>   			return dev_err_probe(dev, -EPROBE_DEFER, "cannot get secondary DSI host\n");
>   
> -		pinfo->dsi[1] = mipi_dsi_device_register_full(dsi1_host, info);
> +		pinfo->dsi[1] = devm_mipi_dsi_device_register_full(dev, dsi1_host, info);
>   		if (IS_ERR(pinfo->dsi[1])) {
>   			dev_err(dev, "cannot get secondary DSI device\n");
>   			return PTR_ERR(pinfo->dsi[1]);
> @@ -1288,7 +1276,7 @@ static int nt36523_probe(struct mipi_dsi_device *dsi)
>   		pinfo->dsi[i]->format = pinfo->desc->format;
>   		pinfo->dsi[i]->mode_flags = pinfo->desc->mode_flags;
>   
> -		ret = mipi_dsi_attach(pinfo->dsi[i]);
> +		ret = devm_mipi_dsi_attach(dev, pinfo->dsi[i]);
>   		if (ret < 0)
>   			return dev_err_probe(dev, ret, "cannot attach to DSI%d host.\n", i);
>   	}

Reviewed-by: Neil Armstrong <neil.armstrong@...aro.org>