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SubjectRe: [PATCH v3 07/13] iio: imu: add Kconfig and Makefile for inv_icm42600 driver
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@intel.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@invensense.com>
:::::: CC: 0day robot <lkp@intel.com>

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
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