linux-kernel - Re: [PATCH 1/3] drm/bridge: anx7625: Convert to use devm

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Message-ID: <20220113033033.GA2478030@anxtwsw-Precision-3640-Tower>
Date:   Thu, 13 Jan 2022 11:30:33 +0800
From:   Xin Ji <xji@...logixsemi.com>
To:     Hsin-Yi Wang <hsinyi@...omium.org>,
        Robert Foss <robert.foss@...aro.org>,
        Rob Herring <robh+dt@...nel.org>
Cc:     David Airlie <airlied@...ux.ie>, Daniel Vetter <daniel@...ll.ch>,
        Laurent Pinchart <laurent.pinchart@...asonboard.com>,
        dri-devel@...ts.freedesktop.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, Andrzej Hajda <a.hajda@...sung.com>,
        Neil Armstrong <narmstrong@...libre.com>,
        Jonas Karlman <jonas@...boo.se>,
        Jernej Skrabec <jernej.skrabec@...il.com>,
        Sam Ravnborg <sam@...nborg.org>,
        Maxime Ripard <maxime@...no.tech>
Subject: Re: [PATCH 1/3] drm/bridge: anx7625: Convert to use devm_kzalloc

Hi Hsin-Yi, thanks for the patch!
Reviewed-by: Xin Ji <xji@...logixsemi.com>

Thanks,
Xin

On Tue, Jan 11, 2022 at 07:26:59PM +0800, Hsin-Yi Wang wrote:
> Use devm_kzalloc instead of kzalloc and drop kfree(). Let the memory
> handled by driver detach.
> 
> Signed-off-by: Hsin-Yi Wang <hsinyi@...omium.org>
> ---
>  drivers/gpu/drm/bridge/analogix/anx7625.c | 9 +++------
>  1 file changed, 3 insertions(+), 6 deletions(-)
> 
> diff --git a/drivers/gpu/drm/bridge/analogix/anx7625.c b/drivers/gpu/drm/bridge/analogix/anx7625.c
> index 0b858c78abe8b6..dbe708eb3bcf11 100644
> --- a/drivers/gpu/drm/bridge/analogix/anx7625.c
> +++ b/drivers/gpu/drm/bridge/analogix/anx7625.c
> @@ -2515,7 +2515,7 @@ static int anx7625_i2c_probe(struct i2c_client *client,
>  		return -ENODEV;
>  	}
>  
> -	platform = kzalloc(sizeof(*platform), GFP_KERNEL);
> +	platform = devm_kzalloc(dev, sizeof(*platform), GFP_KERNEL);
>  	if (!platform) {
>  		DRM_DEV_ERROR(dev, "fail to allocate driver data\n");
>  		return -ENOMEM;
> @@ -2527,7 +2527,7 @@ static int anx7625_i2c_probe(struct i2c_client *client,
>  	if (ret) {
>  		if (ret != -EPROBE_DEFER)
>  			DRM_DEV_ERROR(dev, "fail to parse DT : %d\n", ret);
> -		goto free_platform;
> +		return ret;
>  	}
>  
>  	platform->client = client;
> @@ -2552,7 +2552,7 @@ static int anx7625_i2c_probe(struct i2c_client *client,
>  	if (!platform->hdcp_workqueue) {
>  		dev_err(dev, "fail to create work queue\n");
>  		ret = -ENOMEM;
> -		goto free_platform;
> +		return ret;
>  	}
>  
>  	platform->pdata.intp_irq = client->irq;
> @@ -2637,9 +2637,6 @@ static int anx7625_i2c_probe(struct i2c_client *client,
>  	if (platform->hdcp_workqueue)
>  		destroy_workqueue(platform->hdcp_workqueue);
>  
> -free_platform:
> -	kfree(platform);
> -
>  	return ret;
>  }
>  
> -- 
> 2.34.1.575.g55b058a8bb-goog