linux-kernel - Re: [PATCH] rtc: pl030: Use devm

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Date:	Tue, 08 Oct 2013 21:07:29 -0700
From:	Joe Perches <joe@...ches.com>
To:	Sangjung Woo <sangjung.woo@...sung.com>
Cc:	Alessandro Rubini <rubini@...dd.com>,
	Russell King <rmk+kernel@....linux.org.uk>,
	rtc-linux@...glegroups.com, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] rtc: pl030: Use devm_kzalloc() instead of kmalloc()

On Wed, 2013-10-09 at 13:00 +0900, Sangjung Woo wrote:
> In order to be free automatically and make the cleanup paths more
> simple, use devm_kzalloc() instead of kzalloc().
[]
> diff --git a/drivers/rtc/rtc-pl030.c b/drivers/rtc/rtc-pl030.c
[]
> @@ -106,7 +106,7 @@ static int pl030_probe(struct amba_device *dev, const struct amba_id *id)
>  	if (ret)
>  		goto err_req;
>  
> -	rtc = kmalloc(sizeof(*rtc), GFP_KERNEL);
> +	rtc = devm_kzalloc(&dev->dev, sizeof(*rtc), GFP_KERNEL);

You're not deleting a memset and you're
converting a kmalloc.

Why do you need the zalloc version?

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