linux-kernel - Re: [PATCH] iio: mma8452: add support for MMA8451Q

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Date:	Thu, 14 Jan 2016 19:15:45 +0800
From:	kbuild test robot <lkp@...el.com>
To:	Martin Kepplinger <martink@...teo.de>
Cc:	kbuild-all@...org, jic23@...nel.org, knaack.h@....de,
	lars@...afoo.de, pmeerw@...erw.net,
	christoph.muellner@...obroma-systems.com, mfuzzey@...keon.com,
	linux-iio@...r.kernel.org, linux-kernel@...r.kernel.org,
	Martin Kepplinger <martink@...teo.de>,
	Martin Kepplinger <martin.kepplinger@...obroma-systems.com>
Subject: Re: [PATCH] iio: mma8452: add support for MMA8451Q

Hi Martin,

[auto build test ERROR on next-20160114]
[also build test ERROR on v4.4]
[cannot apply to robh/for-next v4.4-rc8 v4.4-rc7 v4.4-rc6]
[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/Martin-Kepplinger/iio-mma8452-add-support-for-MMA8451Q/20160114-190548
config: x86_64-randconfig-x015-01140842 (attached as .config)
reproduce:
        # save the attached .config to linux build tree
        make ARCH=x86_64 

All error/warnings (new ones prefixed by >>):

>> drivers/iio/accel/mma8452.c:832:2: error: implicit declaration of function 'MMA8452_FREEFALL_CHANNEL' [-Werror=implicit-function-declaration]
     MMA8452_FREEFALL_CHANNEL(IIO_MOD_X_AND_Y_AND_Z),
     ^
>> drivers/iio/accel/mma8452.c:832:2: error: initializer element is not constant
   drivers/iio/accel/mma8452.c:832:2: note: (near initialization for 'mma8451_channels[4].type')
>> drivers/iio/accel/mma8452.c:827:56: warning: missing braces around initializer [-Wmissing-braces]
    static const struct iio_chan_spec mma8451_channels[] = {
                                                           ^
   drivers/iio/accel/mma8452.c:827:56: note: (near initialization for 'mma8451_channels')
   cc1: some warnings being treated as errors

vim +/MMA8452_FREEFALL_CHANNEL +832 drivers/iio/accel/mma8452.c

   821			.endianness = IIO_BE, \
   822		}, \
   823		.event_spec = mma8452_motion_event, \
   824		.num_event_specs = ARRAY_SIZE(mma8452_motion_event), \
   825	}
   826	
 > 827	static const struct iio_chan_spec mma8451_channels[] = {
   828		MMA8452_CHANNEL(X, idx_x, 14),
   829		MMA8452_CHANNEL(Y, idx_y, 14),
   830		MMA8452_CHANNEL(Z, idx_z, 14),
   831		IIO_CHAN_SOFT_TIMESTAMP(idx_ts),
 > 832		MMA8452_FREEFALL_CHANNEL(IIO_MOD_X_AND_Y_AND_Z),
   833	};
   834	
   835	static const struct iio_chan_spec mma8452_channels[] = {

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