linux-kernel - Re: [PATCH] regulator: rk808: make better use of the gpiod API

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Date:	Tue, 21 Jul 2015 16:21:49 +0200
From:	Uwe Kleine-König 
	<u.kleine-koenig@...gutronix.de>
To:	Mark Brown <broonie@...nel.org>
Cc:	Linus Walleij <linus.walleij@...aro.org>,
	Liam Girdwood <lgirdwood@...il.com>,
	linux-next@...r.kernel.org, linux-kernel@...r.kernel.org,
	Chris Zhong <zyw@...k-chips.com>, kernel@...gutronix.de,
	Krzysztof Kozlowski <k.kozlowski@...sung.com>
Subject: Re: [PATCH] regulator: rk808: make better use of the gpiod API

On Tue, Jul 21, 2015 at 12:04:15PM +0100, Mark Brown wrote:
> On Tue, Jul 21, 2015 at 11:56:49AM +0200, Linus Walleij wrote:
> > On Tue, Jul 21, 2015 at 8:59 AM, Uwe Kleine-König
> 
> > > The gpiod functions include variants for managed gpiod resources. Use it
> > > to simplify the remove function.
> 
> > > As the driver handles a device node without a specification of dvs gpios
> > > just fine, additionally use the variant of gpiod_get exactly for this
> > > use case. This makes error checking more strict.
> 
> > > As a third benefit this patch makes the driver use the flags parameter
> > > of gpiod_get* which will not be optional any more after 4.2 and so
> > > prevents a build failure when the respective gpiod commit is merged.
> 
> > Reviewed-by: Linus Walleij <linus.walleij@...aro.org>
> > 
> > Mark, please apply this.
> 
> ...and reverted since it doesn't build as it's adding a use of a new API
> which doesn't actually exist in Linus' tree yet (hopefully it's in
> -next).  I need a tag to pull if I'm going to use this patch.
If you're refering to the build bot warning I got, too, then the problem
is just a missing #include and the problem existed already before e.g.
for gpiod_get_value with the .config used by the build bot.

In reply to this mail I'll send a fixup patch for the missing include
and a reworked version of my patch that fixes the reference leak pointed
out by Krzysztof Kozlowski.

Best regards
Uwe

-- 
Pengutronix e.K.                           | Uwe Kleine-König            |
Industrial Linux Solutions                 | http://www.pengutronix.de/  |
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