Re: [PATCH] hwmon: constify struct hwmon_chip_info info member harder
From: kernel test robot
Date: Thu Mar 09 2023 - 06:45:35 EST
Hi Jani,
I love your patch! Perhaps something to improve:
[auto build test WARNING on groeck-staging/hwmon-next]
[also build test WARNING on linus/master v6.3-rc1 next-20230309]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]
url: https://github.com/intel-lab-lkp/linux/commits/Jani-Nikula/hwmon-constify-struct-hwmon_chip_info-info-member-harder/20230309-163328
base: https://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging.git hwmon-next
patch link: https://lore.kernel.org/r/20230309082841.400118-1-jani.nikula%40intel.com
patch subject: [PATCH] hwmon: constify struct hwmon_chip_info info member harder
config: x86_64-randconfig-a011 (https://download.01.org/0day-ci/archive/20230309/202303091901.0BoQeZI2-lkp@xxxxxxxxx/config)
compiler: gcc-11 (Debian 11.3.0-8) 11.3.0
reproduce (this is a W=1 build):
# https://github.com/intel-lab-lkp/linux/commit/1ec9eaf0281f0a40044492700b7cdfe99d35d35e
git remote add linux-review https://github.com/intel-lab-lkp/linux
git fetch --no-tags linux-review Jani-Nikula/hwmon-constify-struct-hwmon_chip_info-info-member-harder/20230309-163328
git checkout 1ec9eaf0281f0a40044492700b7cdfe99d35d35e
# save the config file
mkdir build_dir && cp config build_dir/.config
make W=1 O=build_dir ARCH=x86_64 olddefconfig
make W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash drivers/hwmon/
If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@xxxxxxxxx>
| Link: https://lore.kernel.org/oe-kbuild-all/202303091901.0BoQeZI2-lkp@xxxxxxxxx/
All warnings (new ones prefixed by >>):
drivers/hwmon/hwmon.c: In function 'hwmon_thermal_set_trips':
>> drivers/hwmon/hwmon.c:177:50: warning: initialization discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers]
177 | const struct hwmon_channel_info **info = chip->info;
| ^~~~
drivers/hwmon/hwmon.c: In function 'hwmon_thermal_register_sensors':
drivers/hwmon/hwmon.c:256:50: warning: initialization discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers]
256 | const struct hwmon_channel_info **info = chip->info;
| ^~~~
vim +/const +177 drivers/hwmon/hwmon.c
d560168b5d0fb4a Guenter Roeck 2015-08-26 171
e5181331359d931 Daniel Lezcano 2022-08-05 172 static int hwmon_thermal_set_trips(struct thermal_zone_device *tz, int low, int high)
a5f6c0f85a09f46 Dmitry Osipenko 2021-06-23 173 {
e5181331359d931 Daniel Lezcano 2022-08-05 174 struct hwmon_thermal_data *tdata = tz->devdata;
a5f6c0f85a09f46 Dmitry Osipenko 2021-06-23 175 struct hwmon_device *hwdev = to_hwmon_device(tdata->dev);
a5f6c0f85a09f46 Dmitry Osipenko 2021-06-23 176 const struct hwmon_chip_info *chip = hwdev->chip;
a5f6c0f85a09f46 Dmitry Osipenko 2021-06-23 @177 const struct hwmon_channel_info **info = chip->info;
a5f6c0f85a09f46 Dmitry Osipenko 2021-06-23 178 unsigned int i;
a5f6c0f85a09f46 Dmitry Osipenko 2021-06-23 179 int err;
a5f6c0f85a09f46 Dmitry Osipenko 2021-06-23 180
a5f6c0f85a09f46 Dmitry Osipenko 2021-06-23 181 if (!chip->ops->write)
a5f6c0f85a09f46 Dmitry Osipenko 2021-06-23 182 return 0;
a5f6c0f85a09f46 Dmitry Osipenko 2021-06-23 183
a5f6c0f85a09f46 Dmitry Osipenko 2021-06-23 184 for (i = 0; info[i] && info[i]->type != hwmon_temp; i++)
a5f6c0f85a09f46 Dmitry Osipenko 2021-06-23 185 continue;
a5f6c0f85a09f46 Dmitry Osipenko 2021-06-23 186
a5f6c0f85a09f46 Dmitry Osipenko 2021-06-23 187 if (!info[i])
a5f6c0f85a09f46 Dmitry Osipenko 2021-06-23 188 return 0;
a5f6c0f85a09f46 Dmitry Osipenko 2021-06-23 189
a5f6c0f85a09f46 Dmitry Osipenko 2021-06-23 190 if (info[i]->config[tdata->index] & HWMON_T_MIN) {
a5f6c0f85a09f46 Dmitry Osipenko 2021-06-23 191 err = chip->ops->write(tdata->dev, hwmon_temp,
a5f6c0f85a09f46 Dmitry Osipenko 2021-06-23 192 hwmon_temp_min, tdata->index, low);
a5f6c0f85a09f46 Dmitry Osipenko 2021-06-23 193 if (err && err != -EOPNOTSUPP)
a5f6c0f85a09f46 Dmitry Osipenko 2021-06-23 194 return err;
a5f6c0f85a09f46 Dmitry Osipenko 2021-06-23 195 }
a5f6c0f85a09f46 Dmitry Osipenko 2021-06-23 196
a5f6c0f85a09f46 Dmitry Osipenko 2021-06-23 197 if (info[i]->config[tdata->index] & HWMON_T_MAX) {
a5f6c0f85a09f46 Dmitry Osipenko 2021-06-23 198 err = chip->ops->write(tdata->dev, hwmon_temp,
a5f6c0f85a09f46 Dmitry Osipenko 2021-06-23 199 hwmon_temp_max, tdata->index, high);
a5f6c0f85a09f46 Dmitry Osipenko 2021-06-23 200 if (err && err != -EOPNOTSUPP)
a5f6c0f85a09f46 Dmitry Osipenko 2021-06-23 201 return err;
a5f6c0f85a09f46 Dmitry Osipenko 2021-06-23 202 }
a5f6c0f85a09f46 Dmitry Osipenko 2021-06-23 203
a5f6c0f85a09f46 Dmitry Osipenko 2021-06-23 204 return 0;
a5f6c0f85a09f46 Dmitry Osipenko 2021-06-23 205 }
a5f6c0f85a09f46 Dmitry Osipenko 2021-06-23 206
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