linux-kernel - Re: [PATCH] drivers/pinctrl/pinctrl-at91.c: convert kfree to devm

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Date:	Tue, 11 Dec 2012 17:00:37 +0400
From:	Sergei Shtylyov <sshtylyov@...sta.com>
To:	Julia Lawall <Julia.Lawall@...6.fr>
CC:	Jean-Christophe Plagniol-Villard <plagnioj@...osoft.com>,
	Linus Walleij <linus.walleij@...aro.org>,
	kernel-janitors@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH] drivers/pinctrl/pinctrl-at91.c: convert kfree to devm_kfree

Hello.

On 11-12-2012 14:58, Julia Lawall wrote:

> From: Julia Lawall <Julia.Lawall@...6.fr>

> The function at91_dt_node_to_map is ultimately called by the function
> pinctrl_get, which is an exported function.  Since it is possible that this
> function is not called from within a probe function, for safety, the kfree
> is converted to a devm_kfree, to both free the data and remove it from the
> device in a failure situation.

> A newline is added in the call to devm_kfree to avoid exceeding the 80

    devm_kzalloc() you mean?

> character limit.

> Signed-off-by: Julia Lawall <Julia.Lawall@...6.fr>

> ---
>   drivers/pinctrl/pinctrl-at91.c |    5 +++--
>   1 file changed, 3 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/pinctrl/pinctrl-at91.c b/drivers/pinctrl/pinctrl-at91.c
> index c5e7571..0da8a5f 100644
> --- a/drivers/pinctrl/pinctrl-at91.c
> +++ b/drivers/pinctrl/pinctrl-at91.c
> @@ -255,7 +255,8 @@ static int at91_dt_node_to_map(struct pinctrl_dev *pctldev,
>   	}
>
>   	map_num += grp->npins;
> -	new_map = devm_kzalloc(pctldev->dev, sizeof(*new_map) * map_num, GFP_KERNEL);
> +	new_map = devm_kzalloc(pctldev->dev, sizeof(*new_map) * map_num,
> +			       GFP_KERNEL);

WBR, Sergei


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