linux-kernel - Re: [PATCH v2 02/10] rtc: max77686: Use ARRAY

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Message-ID: <56A1F8BB.9090803@nvidia.com>
Date:	Fri, 22 Jan 2016 15:09:07 +0530
From:	Laxman Dewangan <ldewangan@...dia.com>
To:	Javier Martinez Canillas <javier@....samsung.com>,
	<linux-kernel@...r.kernel.org>
CC:	Kukjin Kim <kgene@...nel.org>, <rtc-linux@...glegroups.com>,
	Chanwoo Choi <cw00.choi@...sung.com>,
	Alexandre Belloni <alexandre.belloni@...e-electrons.com>,
	Krzysztof Kozlowski <k.kozlowski@...sung.com>,
	<linux-samsung-soc@...r.kernel.org>
Subject: Re: [PATCH v2 02/10] rtc: max77686: Use ARRAY_SIZE() instead of current
 array length


On Friday 22 January 2016 01:53 AM, Javier Martinez Canillas wrote:
> It is better to use the ARRAY_SIZE() macro instead of the array length
> to avoid bugs if the array is later changed and the length not updated.
>
> Signed-off-by: Javier Martinez Canillas <javier@....samsung.com>
> Reviewed-by: Krzysztof Kozlowski <k.kozlowski@...sung.com>
>
>
Acked-by: Laxman Dewangan <ldewangan@...dia.com>


Similar stuffs are there on multiple places:
u8 data[RTC_NR_TIME];

:::
ret = regmap_bulk_read(info->max77686->rtc_regmap,
                                  MAX77686_ALARM1_SEC, data, RTC_NR_TIME);


Should we say:
ret = regmap_bulk_read(info->max77686->rtc_regmap,
                                  MAX77686_ALARM1_SEC, data, 
ARRAY_SIZE(data));