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Date:   Sun, 14 Jun 2020 14:52:45 +0100
From:   Jonathan Cameron <jic23@...nel.org>
To:     kernel test robot <lkp@...el.com>
Cc:     Jean-Baptiste Maneyrol <jmaneyrol@...ensense.com>,
        robh+dt@...nel.org, robh@...nel.org, mchehab+huawei@...nel.org,
        davem@...emloft.net, gregkh@...uxfoundation.org,
        kbuild-all@...ts.01.org, linux-iio@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 07/13] iio: imu: add Kconfig and Makefile for
 inv_icm42600 driver


For anyone curious, this is an artefact of me failing to push the iio tree
out last weekend which included a patch to make iio_device_get_drvdata
take a const.

Sorry for the noise

Jonathan

On Tue, 9 Jun 2020 07:03:53 +0800
kernel test robot <lkp@...el.com> wrote:

> Hi Jean-Baptiste,
> 
> Thank you for the patch! Perhaps something to improve:
> 
> [auto build test WARNING on iio/togreg]
> [also build test WARNING on robh/for-next linus/master v5.7 next-20200608]
> [if your patch is applied to the wrong git tree, please drop us a note to help
> improve the system. BTW, we also suggest to use '--base' option to specify the
> base tree in git format-patch, please see https://stackoverflow.com/a/37406982]
> 
> url:    https://github.com/0day-ci/linux/commits/Jean-Baptiste-Maneyrol/iio-imu-new-inv_icm42600-driver/20200609-044917
> base:   https://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio.git togreg
> config: ia64-allmodconfig (attached as .config)
> compiler: ia64-linux-gcc (GCC) 9.3.0
> reproduce (this is a W=1 build):
>         wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
>         chmod +x ~/bin/make.cross
>         # save the attached .config to linux build tree
>         COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=ia64 
> 
> If you fix the issue, kindly add following tag as appropriate
> Reported-by: kernel test robot <lkp@...el.com>
> 
> All warnings (new ones prefixed by >>, old ones prefixed by <<):
> 
> drivers/iio/imu/inv_icm42600/inv_icm42600_core.c: In function 'inv_icm42600_get_mount_matrix':
> >> drivers/iio/imu/inv_icm42600/inv_icm42600_core.c:91:63: warning: passing argument 1 of 'iio_device_get_drvdata' discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers]  
> 91 |  const struct inv_icm42600_state *st = iio_device_get_drvdata(indio_dev);
> |                                                               ^~~~~~~~~
> In file included from drivers/iio/imu/inv_icm42600/inv_icm42600_core.c:15:
> include/linux/iio/iio.h:672:60: note: expected 'struct iio_dev *' but argument is of type 'const struct iio_dev *'
> 672 | static inline void *iio_device_get_drvdata(struct iio_dev *indio_dev)
> |                                            ~~~~~~~~~~~~~~~~^~~~~~~~~
> 
> vim +91 drivers/iio/imu/inv_icm42600/inv_icm42600_core.c
> 
> 632e967c33fb32 Jean-Baptiste Maneyrol 2020-06-08  86  
> 632e967c33fb32 Jean-Baptiste Maneyrol 2020-06-08  87  const struct iio_mount_matrix *
> 632e967c33fb32 Jean-Baptiste Maneyrol 2020-06-08  88  inv_icm42600_get_mount_matrix(const struct iio_dev *indio_dev,
> 632e967c33fb32 Jean-Baptiste Maneyrol 2020-06-08  89  			      const struct iio_chan_spec *chan)
> 632e967c33fb32 Jean-Baptiste Maneyrol 2020-06-08  90  {
> 632e967c33fb32 Jean-Baptiste Maneyrol 2020-06-08 @91  	const struct inv_icm42600_state *st = iio_device_get_drvdata(indio_dev);
> 632e967c33fb32 Jean-Baptiste Maneyrol 2020-06-08  92  
> 632e967c33fb32 Jean-Baptiste Maneyrol 2020-06-08  93  	return &st->orientation;
> 632e967c33fb32 Jean-Baptiste Maneyrol 2020-06-08  94  }
> 632e967c33fb32 Jean-Baptiste Maneyrol 2020-06-08  95  
> 
> :::::: The code at line 91 was first introduced by commit
> :::::: 632e967c33fb32bb0a2a2f85a2a8d2e6d2b125f3 iio: imu: inv_icm42600: add core of new inv_icm42600 driver
> 
> :::::: TO: Jean-Baptiste Maneyrol <jmaneyrol@...ensense.com>
> :::::: CC: 0day robot <lkp@...el.com>
> 
> ---
> 0-DAY CI Kernel Test Service, Intel Corporation
> https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

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