linux-kernel - Re: randconfig build error with next-20150413, in drivers/spi/spi-bcm2835.c

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Date:	Mon, 13 Apr 2015 11:06:25 -0600
From:	Stephen Warren <swarren@...dotorg.org>
To:	Martin Sperl <kernel@...tin.sperl.org>
CC:	Jim Davis <jim.epost@...il.com>,
	Stephen Rothwell <sfr@...b.auug.org.au>,
	linux-next <linux-next@...r.kernel.org>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	broonie <broonie@...nel.org>, lee@...nel.org,
	linux-spi@...r.kernel.org, linux-rpi-kernel@...ts.infradead.org
Subject: Re: randconfig build error with next-20150413, in drivers/spi/spi-bcm2835.c

On 04/13/2015 10:52 AM, Jim Davis wrote:
> Building with the attached random configuration file,
>
> drivers/spi/spi-bcm2835.c: In function 'chip_match_name':
> drivers/spi/spi-bcm2835.c:356:21: error: dereferencing pointer to
> incomplete type
>    return !strcmp(chip->label, data);
>                       ^
> drivers/spi/spi-bcm2835.c: In function 'bcm2835_spi_setup':
> drivers/spi/spi-bcm2835.c:382:2: error: implicit declaration of
> function 'gpiochip_find' [-Werror=implicit-function-declaration]
>    chip = gpiochip_find("pinctrl-bcm2835", chip_match_name);
>    ^
> drivers/spi/spi-bcm2835.c:382:7: warning: assignment makes pointer
> from integer without a cast
>    chip = gpiochip_find("pinctrl-bcm2835", chip_match_name);
>         ^
> drivers/spi/spi-bcm2835.c:387:21: error: dereferencing pointer to
> incomplete type
>    spi->cs_gpio = chip->base + 8 - spi->chip_select;
>                       ^
> drivers/spi/spi-bcm2835.c: In function 'chip_match_name':
> drivers/spi/spi-bcm2835.c:357:1: warning: control reaches end of
> non-void function [-Wreturn-type]
>   }
>   ^

Martin,

I think you need to update spi-bcm2835's Kconfig to add a dependency on 
GPIO.
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