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SubjectRe: [PATCH v11] asus-wmi: Add support for custom fan curves
Hi "Luke,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on linus/master]
[also build test WARNING on next-20210908]
[cannot apply to linux/master v5.14]
[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]

url: https://github.com/0day-ci/linux/commits/Luke-D-Jones/asus-wmi-Add-support-for-custom-fan-curves/20210908-072520
base: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 626bf91a292e2035af5b9d9cce35c5c138dfe06d
config: x86_64-rhel-8.3-kselftests (attached as .config)
compiler: gcc-9 (Debian 9.3.0-22) 9.3.0
reproduce (this is a W=1 build):
# https://github.com/0day-ci/linux/commit/3f17887090cfe852531995edb96ad6a3580a6a55
git remote add linux-review https://github.com/0day-ci/linux
git fetch --no-tags linux-review Luke-D-Jones/asus-wmi-Add-support-for-custom-fan-curves/20210908-072520
git checkout 3f17887090cfe852531995edb96ad6a3580a6a55
# save the attached .config to linux build tree
make W=1 ARCH=x86_64

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 >>):

drivers/platform/x86/asus-wmi.c: In function 'fan_curve_store':
>> drivers/platform/x86/asus-wmi.c:2332:12: warning: variable 'old_value' set but not used [-Wunused-but-set-variable]
2332 | u8 value, old_value;
| ^~~~~~~~~


vim +/old_value +2332 drivers/platform/x86/asus-wmi.c

2325
2326 static ssize_t fan_curve_store(struct device *dev,
2327 struct device_attribute *attr, const char *buf,
2328 size_t count)
2329 {
2330 struct asus_wmi *asus = dev_get_drvdata(dev);
2331 struct fan_curve_data *data;
> 2332 u8 value, old_value;
2333 int err;
2334
2335 int index = to_sensor_dev_attr_2(attr)->index;
2336 int nr = to_sensor_dev_attr_2(attr)->nr;
2337 int pwm = nr & FAN_CURVE_PWM_MASK;
2338
2339 data = fan_curve_data_select(asus, attr);
2340
2341 err = kstrtou8(buf, 10, &value);
2342 if (err < 0)
2343 return err;
2344
2345 if (pwm) {
2346 old_value = data->percents[index];
2347 data->percents[index] = value;
2348 } else {
2349 old_value = data->temps[index];
2350 data->temps[index] = value;
2351 }
2352
2353 /*
2354 * Mark as disabled so the user has to explicitly enable to apply a
2355 * changed fan curve. This prevents potential lockups from writing out
2356 * many changes as one-write-per-change.
2357 */
2358 data->enabled = false;
2359
2360 return count;
2361 }
2362

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