linux-kernel - Re: linux-next: build failure after merge of the gpio tree

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Message-ID: <20150813105037.129ef75f@canb.auug.org.au>
Date:	Thu, 13 Aug 2015 10:50:37 +1000
From:	Stephen Rothwell <sfr@...b.auug.org.au>
To:	Chanwoo Choi <cw00.choi@...sung.com>
Cc:	Uwe Kleine-König 
	<u.kleine-koenig@...gutronix.de>,
	Linus Walleij <linus.walleij@...aro.org>,
	linux-next@...r.kernel.org, linux-kernel@...r.kernel.org,
	Roger Quadros <rogerq@...com>
Subject: Re: linux-next: build failure after merge of the gpio tree

Hi Chanwoo,

On Thu, 13 Aug 2015 09:19:12 +0900 Chanwoo Choi <cw00.choi@...sung.com> wrote:
>
> Hi Stephen,
> 
> On 08/13/2015 08:02 AM, Stephen Rothwell wrote:
> > Hi Uwe,
> > 
> > On Wed, 12 Aug 2015 22:16:42 +0200 Uwe Kleine-König <u.kleine-koenig@...gutronix.de> wrote:
> >>
> >> On Wed, Aug 12, 2015 at 06:10:45PM +1000, Stephen Rothwell wrote:
> >>> After merging the gpio tree, today's linux-next build (powerpc
> >>> allyesconfig) failed like this:
> >>>
> >>> drivers/extcon/extcon-palmas.c:211:25: error: too few arguments to function 'devm_gpiod_get_optional'
> >>>   palmas_usb->id_gpiod = devm_gpiod_get_optional(&pdev->dev, "id");
> >>>                          ^
> >>> In file included from /home/sfr/next/next/include/asm-generic/gpio.h:13:0,
> >>>                  from /home/sfr/next/next/include/linux/gpio.h:51,
> >>>                  from /home/sfr/next/next/include/linux/of_gpio.h:20,
> >>>                  from /home/sfr/next/next/include/linux/mfd/palmas.h:24,
> >>>                  from /home/sfr/next/next/drivers/extcon/extcon-palmas.c:28:
> >>> /home/sfr/next/next/include/linux/gpio/consumer.h:80:32: note: declared here
> >>>  struct gpio_desc *__must_check devm_gpiod_get_optional(struct device *dev,
> >>>                                 ^
> >>>
> >>> Caused by commit
> >>>
> >>>   b17d1bf16cc7 ("gpio: make flags mandatory for gpiod_get functions")
> >>>
> >>> interacting with commit
> >>>
> >>>   92b7cb5dc885 ("extcon: palmas: Support GPIO based USB ID detection")
> >> that commit is not correct. After
> >>
> >> 	palmas_usb->id_gpiod = devm_gpiod_get_optional(&pdev->dev, "id");
> >>
> >> it does
> >>
> >> 	palmas_usb->gpio_id_irq = gpiod_to_irq(palmas_usb->id_gpiod);
> >>
> >> without setting the gpio to input. So the right fix is not to add
> >> GPIOD_ASIS but GPIOD_IN.
> > 
> > OK, I have fixed my merge fix patch, but can you submit a correct patch
> > to the extcon tree maintainer, please?  I assume it can be fixed in
> > that tree right now, right?
> > 
> 
> I'll fix it as Uwe comment as following:
> 
> --- a/drivers/extcon/extcon-palmas.c
> +++ b/drivers/extcon/extcon-palmas.c
> @@ -208,7 +208,8 @@ static int palmas_usb_probe(struct platform_device *pdev)
>                         palmas_usb->wakeup = pdata->wakeup;
>         }
>  
> -       palmas_usb->id_gpiod = devm_gpiod_get_optional(&pdev->dev, "id");
> +       palmas_usb->id_gpiod =
> +               devm_gpiod_get_optional(&pdev->dev, "id", GPIOD_IN);
>         if (IS_ERR(palmas_usb->id_gpiod)) {
>                 dev_err(&pdev->dev, "failed to get id gpio\n");
>                 return PTR_ERR(palmas_usb->id_gpiod);
> 
> I'll send it to LKML and apply it on extcon-next tree.

Thanks.

-- 
Cheers,
Stephen Rothwell                    sfr@...b.auug.org.au
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