linux-kernel - Re: [PATCH 2/5] gpio: Cygnus: add GPIO driver

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Message-ID: <5485001A.7050909@broadcom.com>
Date:	Sun, 7 Dec 2014 17:34:18 -0800
From:	Ray Jui <rjui@...adcom.com>
To:	Joe Perches <joe@...ches.com>
CC:	Rob Herring <robh+dt@...nel.org>, Pawel Moll <pawel.moll@....com>,
	"Mark Rutland" <mark.rutland@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>,
	"Linus Walleij" <linus.walleij@...aro.org>,
	Alexandre Courbot <gnurou@...il.com>,
	Grant Likely <grant.likely@...aro.org>,
	Christian Daudt <bcm@...thebug.org>,
	Matt Porter <mporter@...aro.org>,
	Florian Fainelli <f.fainelli@...il.com>,
	Russell King <linux@....linux.org.uk>,
	Scott Branden <sbranden@...adcom.com>,
	<linux-kernel@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>,
	<linux-gpio@...r.kernel.org>,
	<bcm-kernel-feedback-list@...adcom.com>,
	<devicetree@...r.kernel.org>
Subject: Re: [PATCH 2/5] gpio: Cygnus: add GPIO driver



On 12/5/2014 8:24 PM, Joe Perches wrote:
> On Fri, 2014-12-05 at 19:41 -0800, Ray Jui wrote:
>> On 12/5/2014 6:34 PM, Joe Perches wrote:
>>> On Fri, 2014-12-05 at 18:14 -0800, Ray Jui wrote:
>>>> On 12/5/2014 5:28 PM, Joe Perches wrote:
>>>>> On Fri, 2014-12-05 at 16:40 -0800, Ray Jui wrote:
>>>>>> +			for_each_set_bit(bit, &val, 32) {
> []
>> Actually, by reviewing the code more deeply, I'm not sure why using
>> for_each_set_bit here is 'endian unsafe'.
>
> It's not.  The 32 confused me as it was long
> and sizeof(long) isn't necessarily 32.
>
> Maybe the 32 should be a #define
>
>
>
Okay, to improve readability, I will change 32 to NGPIOS_PER_BANK.
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