linux-kernel - Re: [PATCH 2/8] rtc: max77686: Use usleep

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Message-ID: <56A0F0AA.6080202@osg.samsung.com>
Date:	Thu, 21 Jan 2016 11:52:26 -0300
From:	Javier Martinez Canillas <javier@....samsung.com>
To:	Krzysztof Kozlowski <k.kozlowski@...sung.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>,
	Laxman Dewangan <ldewangan@...dia.com>,
	linux-samsung-soc@...r.kernel.org
Subject: Re: [PATCH 2/8] rtc: max77686: Use usleep_range() instead of msleep()

Hello Krzysztof,

On 01/20/2016 09:37 PM, Krzysztof Kozlowski wrote:
> On 21.01.2016 02:14, Javier Martinez Canillas wrote:
>> Documentation/timers/timers-howto.txt suggest to use usleep_range()
>> instead of msleep() for small msec (1ms - 20ms) since msleep() will
>> often sleep for 20ms for any value in that range.
>>
>> This is fine in this case since 16ms is the _minimum_ delay required
>> by max77686 for an RTC update but by using usleep_range() instead of
>> msleep(), the driver can support other RTC IP blocks with a shorter
>> minium delay (i.e: in the range of usecs insted of msecs).
>
> s/minium/minimum/
> s/insted/instead/
>

Fixed.

>>
>> Signed-off-by: Javier Martinez Canillas <javier@....samsung.com>
>> ---
>>
>>   drivers/rtc/rtc-max77686.c | 5 +++--
>>   1 file changed, 3 insertions(+), 2 deletions(-)
>
> Reviewed-by: Krzysztof Kozlowski <k.kozlowski@...sung.com>
>

Thanks a lot for your review.
  
> Best regards,
> Krzysztof
>

Best regards,
-- 
Javier Martinez Canillas
Open Source Group
Samsung Research America