linux-kernel - Re: [PATCH] iio: inv_mpu6050: Add support for auxiliary I2C master

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Message-ID: <5718A53E.90101@intel.com>
Date:	Thu, 21 Apr 2016 13:02:38 +0300
From:	Crestez Dan Leonard <leonard.crestez@...el.com>
To:	linux-iio@...r.kernel.org
Cc:	kbuild-all@...org, linux-kernel@...r.kernel.org,
	Hartmut Knaack <knaack.h@....de>,
	Lars-Peter Clausen <lars@...afoo.de>,
	Peter Meerwald-Stadler <pmeerw@...erw.net>,
	Daniel Baluta <daniel.baluta@...el.com>,
	linux-i2c@...r.kernel.org, Wolfram Sang <wsa@...-dreams.de>,
	Peter Rosin <peda@...ntia.se>,
	Jonathan Cameron <jic23@...nel.org>
Subject: Re: [PATCH] iio: inv_mpu6050: Add support for auxiliary I2C master

On 04/20/2016 09:17 PM, kbuild test robot wrote:
> Hi,
> 
> [auto build test ERROR on iio/togreg]
> [also build test ERROR on v4.6-rc4 next-20160420]
> [if your patch is applied to the wrong git tree, please drop us a note to help improving the system]
> 
> url:    https://github.com/0day-ci/linux/commits/Crestez-Dan-Leonard/iio-inv_mpu6050-Add-support-for-auxiliary-I2C-master/20160421-012042
> base:   https://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio.git togreg
> config: i386-randconfig-i1-201616 (attached as .config)
> reproduce:
>         # save the attached .config to linux build tree
>         make ARCH=i386 
> 
> All errors (new ones prefixed by >>):
> 
>    drivers/iio/imu/inv_mpu6050/inv_mpu_core.c: In function 'inv_mpu_core_probe':
>>> drivers/iio/imu/inv_mpu6050/inv_mpu_core.c:966:11: error: implicit declaration of function 'i2c_add_adapter' [-Werror=implicit-function-declaration]
>      result = i2c_add_adapter(&st->aux_master_adapter);
>               ^
>>> drivers/iio/imu/inv_mpu6050/inv_mpu_core.c:983:2: error: implicit declaration of function 'i2c_del_adapter' [-Werror=implicit-function-declaration]
>      i2c_del_adapter(&st->aux_master_adapter);
>      ^
>    cc1: some warnings being treated as errors

This error happens if you disable CONFIG_I2C and only compile with SPI
support. I will add a bunch of #ifdef CONFIG_I2C in the next version.