linux-kernel - Re: [patch] extcon: use correct size

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Date:	Thu, 04 Feb 2016 13:47:41 +0100
From:	walter harms <wharms@....de>
To:	Dan Carpenter <dan.carpenter@...cle.com>
CC:	MyungJoo Ham <myungjoo.ham@...sung.com>,
	Jaewon Kim <jaewon02.kim@...sung.com>,
	Chanwoo Choi <cw00.choi@...sung.com>,
	linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org
Subject: Re: [patch] extcon: use correct size



Am 04.02.2016 12:36, schrieb Dan Carpenter:
> The info->status[] array has 3 elements.  We are using size
> MAX77843_MUIC_IRQ_NUM (16) instead of MAX77843_MUIC_STATUS_NUM (3) as
> intended.
> 
> Fixes: 135d9f7d135a ('extcon: max77843: Clear IRQ bits state before request IRQ')
> Signed-off-by: Dan Carpenter <dan.carpenter@...cle.com>
> ---
> This is from static analysis and *NOT TESTED*.  Please review carefully.
> 
> diff --git a/drivers/extcon/extcon-max77843.c b/drivers/extcon/extcon-max77843.c
> index 7bbc300..b188bd6 100644
> --- a/drivers/extcon/extcon-max77843.c
> +++ b/drivers/extcon/extcon-max77843.c
> @@ -806,7 +806,7 @@ static int max77843_muic_probe(struct platform_device *pdev)
>  	/* Clear IRQ bits before request IRQs */
>  	ret = regmap_bulk_read(max77843->regmap_muic,
>  			MAX77843_MUIC_REG_INT1, info->status,
> -			MAX77843_MUIC_IRQ_NUM);
> +			MAX77843_MUIC_STATUS_NUM);
>  	if (ret) {
>  		dev_err(&pdev->dev, "Failed to Clear IRQ bits\n");
>  		goto err_muic_irq;
> --


just for my curiosity: what is wrong with ARRAY_SIZE() ?
So far i understand is the functions intention to fill the array
completely.

re,
 wh