[PATCH v2 4/4] hwmon: Support Aspeed AST2600 PWM/Fan tachometer

[Troy Lee]

Hi Kernel test robot,
The 01/13/2021 17:48, kernel test robot wrote:
> Hi Troy,
> 
> Thank you for the patch! Perhaps something to improve:
> 
> [auto build test WARNING on hwmon/hwmon-next]
> [also build test WARNING on joel-aspeed/for-next v5.11-rc3 next-20210113]
> [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/Troy-Lee/hwmon-aspeed2600-pwm-tacho-Add-driver-support/20210113-151325
> base:   https://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging.git hwmon-next
> config: sparc-randconfig-r021-20210113 (attached as .config)
> compiler: sparc-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
>         # https://github.com/0day-ci/linux/commit/19a51124badf28349d26657b611da77d5dfba2f1
>         git remote add linux-review https://github.com/0day-ci/linux
>         git fetch --no-tags linux-review Troy-Lee/hwmon-aspeed2600-pwm-tacho-Add-driver-support/20210113-151325
>         git checkout 19a51124badf28349d26657b611da77d5dfba2f1
>         # save the attached .config to linux build tree
>         COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=sparc 
> 
> If you fix the issue, kindly add following tag as appropriate
> Reported-by: kernel test robot <lkp at intel.com>
> 
> All warnings (new ones prefixed by >>):
> 
> >> drivers/hwmon/aspeed2600-pwm-tacho.c:581:5: warning: no previous prototype for 'aspeed_pwm_tacho_read' [-Wmissing-prototypes]
>      581 | int aspeed_pwm_tacho_read(struct device *dev, enum hwmon_sensor_types type,
>          |     ^~~~~~~~~~~~~~~~~~~~~
> >> drivers/hwmon/aspeed2600-pwm-tacho.c:615:5: warning: no previous prototype for 'aspeed_pwm_tacho_write' [-Wmissing-prototypes]
>      615 | int aspeed_pwm_tacho_write(struct device *dev, enum hwmon_sensor_types type,
>          |     ^~~~~~~~~~~~~~~~~~~~~~
Good catch, I'll fix it in v3 patch set.

> 
> 
> vim +/aspeed_pwm_tacho_read +581 drivers/hwmon/aspeed2600-pwm-tacho.c
> 
>    580	
>  > 581	int aspeed_pwm_tacho_read(struct device *dev, enum hwmon_sensor_types type,
>    582				u32 attr, int channel, long *val)
>    583	{
>    584		struct aspeed_pwm_tachometer_data *priv = dev_get_drvdata(dev);
>    585		long rpm;
>    586	
>    587		switch (type) {
>    588		case hwmon_pwm:
>    589			switch (attr) {
>    590			case hwmon_pwm_input:
>    591				*val = priv->pwm_channel[channel].falling;
>    592				break;
>    593			default:
>    594				return -EOPNOTSUPP;
>    595			}
>    596			break;
>    597		case hwmon_fan:
>    598			switch (attr) {
>    599			case hwmon_fan_input:
>    600				rpm = aspeed_get_fan_tach_ch_rpm(dev, priv, channel);
>    601				if (rpm < 0)
>    602					return rpm;
>    603				*val = rpm;
>    604				break;
>    605			default:
>    606				return -EOPNOTSUPP;
>    607			}
>    608			break;
>    609		default:
>    610			return -EOPNOTSUPP;
>    611		}
>    612		return 0;
>    613	}
>    614	
>  > 615	int aspeed_pwm_tacho_write(struct device *dev, enum hwmon_sensor_types type,
>    616				u32 attr, int channel, long val)
>    617	{
>    618		switch (type) {
>    619		case hwmon_pwm:
>    620			switch (attr) {
>    621			case hwmon_pwm_input:
>    622				return set_pwm(dev, channel, val);
>    623			default:
>    624				return -EOPNOTSUPP;
>    625			}
>    626			break;
>    627		default:
>    628			return -EOPNOTSUPP;
>    629		}
>    630		return -EOPNOTSUPP;
>    631	}
>    632	
> 
> ---
> 0-DAY CI Kernel Test Service, Intel Corporation
> https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

Thanks,
Troy Lee