Re: [PATCH 1/3] drm/bridge: anx7625: Convert to use devm_kzalloc

From: Xin Ji <xji@analogixsemi.com>
To: Hsin-Yi Wang <hsinyi@chromium.org>,
	Robert Foss <robert.foss@linaro.org>,
	Rob Herring <robh+dt@kernel.org>
Cc: David Airlie <airlied@linux.ie>, Daniel Vetter <daniel@ffwll.ch>,
	Laurent Pinchart <laurent.pinchart@ideasonboard.com>,
	dri-devel@lists.freedesktop.org, devicetree@vger.kernel.org,
	linux-kernel@vger.kernel.org, Andrzej Hajda <a.hajda@samsung.com>,
	Neil Armstrong <narmstrong@baylibre.com>,
	Jonas Karlman <jonas@kwiboo.se>,
	Jernej Skrabec <jernej.skrabec@gmail.com>,
	Sam Ravnborg <sam@ravnborg.org>,
	Maxime Ripard <maxime@cerno.tech>
Subject: Re: [PATCH 1/3] drm/bridge: anx7625: Convert to use devm_kzalloc
Date: Thu, 13 Jan 2022 11:30:33 +0800	[thread overview]
Message-ID: <20220113033033.GA2478030@anxtwsw-Precision-3640-Tower> (raw)
In-Reply-To: <20220111112701.1064458-1-hsinyi@chromium.org>

Hi Hsin-Yi, thanks for the patch!
Reviewed-by: Xin Ji <xji@analogixsemi.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@chromium.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