Re: [PATCH v3] iio: dac: ds4422/ds4424 dac driver

From: kbuild test robot
Date: Tue Sep 19 2017 - 09:35:06 EST

Hi Ismail,

[auto build test WARNING on iio/togreg]
[also build test WARNING on v4.14-rc1 next-20170919]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

base: togreg
config: ia64-allyesconfig (attached as .config)
compiler: ia64-linux-gcc (GCC) 6.2.0
wget -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# save the attached .config to linux build tree
make.cross ARCH=ia64

All warnings (new ones prefixed by >>):

>> drivers/iio/dac/ds4424.c:62:2: warning: 'unused' attribute ignored [-Wattributes]
__maybe_unused uint16_t save[DS4424_MAX_DAC_CHANNELS];
drivers/iio/dac/ds4424.c: In function 'ds4424_parse_dt':
drivers/iio/dac/ds4424.c:232:6: warning: unused variable 'count' [-Wunused-variable]
int count;

vim +/unused +62 drivers/iio/dac/ds4424.c

59 struct ds4424_data {
60 struct i2c_client *client;
61 struct mutex lock;
> 62 __maybe_unused uint16_t save[DS4424_MAX_DAC_CHANNELS];
63 uint32_t rfs_res[DS4424_MAX_DAC_CHANNELS];
64 struct regulator *vcc_reg;
65 uint8_t raw[DS4424_MAX_DAC_CHANNELS];
66 };

0-DAY kernel test infrastructure Open Source Technology Center Intel Corporation

Attachment: .config.gz
Description: application/gzip