Re: [PATCH 2/2] pwm: core: Add option to config PWM duty/period with u64 data length

From: kbuild test robot
Date: Mon Sep 16 2019 - 10:00:58 EST


Hi Guru,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on linus/master]
[cannot apply to v5.3 next-20190915]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url: https://github.com/0day-ci/linux/commits/Guru-Das-Srinagesh/pwm-Add-different-PWM-output-types-support/20190916-151008
config: i386-randconfig-h004-201937 (attached as .config)
compiler: gcc-7 (Debian 7.4.0-11) 7.4.0
reproduce:
# save the attached .config to linux build tree
make ARCH=i386

If you fix the issue, kindly add following tag
Reported-by: kbuild test robot <lkp@xxxxxxxxx>

All errors (new ones prefixed by >>):

ld: drivers/hwmon/pwm-fan.o: in function `pwm_fan_resume':
>> drivers/hwmon/pwm-fan.c:440: undefined reference to `__udivdi3'

vim +440 drivers/hwmon/pwm-fan.c

d82d57767c8598 Kamil Debski 2014-07-16 420
d82d57767c8598 Kamil Debski 2014-07-16 421 static int pwm_fan_resume(struct device *dev)
d82d57767c8598 Kamil Debski 2014-07-16 422 {
d82d57767c8598 Kamil Debski 2014-07-16 423 struct pwm_fan_ctx *ctx = dev_get_drvdata(dev);
2289711c9d4d58 Boris Brezillon 2016-04-14 424 struct pwm_args pargs;
48b9d5b4f40825 Kamil Debski 2014-11-03 425 unsigned long duty;
48b9d5b4f40825 Kamil Debski 2014-11-03 426 int ret;
d82d57767c8598 Kamil Debski 2014-07-16 427
b57e1d42939721 Stefan Wahren 2019-02-22 428 if (ctx->reg_en) {
b57e1d42939721 Stefan Wahren 2019-02-22 429 ret = regulator_enable(ctx->reg_en);
b57e1d42939721 Stefan Wahren 2019-02-22 430 if (ret) {
b57e1d42939721 Stefan Wahren 2019-02-22 431 dev_err(dev, "Failed to enable fan supply: %d\n", ret);
b57e1d42939721 Stefan Wahren 2019-02-22 432 return ret;
b57e1d42939721 Stefan Wahren 2019-02-22 433 }
b57e1d42939721 Stefan Wahren 2019-02-22 434 }
b57e1d42939721 Stefan Wahren 2019-02-22 435
48b9d5b4f40825 Kamil Debski 2014-11-03 436 if (ctx->pwm_value == 0)
d82d57767c8598 Kamil Debski 2014-07-16 437 return 0;
48b9d5b4f40825 Kamil Debski 2014-11-03 438
2289711c9d4d58 Boris Brezillon 2016-04-14 439 pwm_get_args(ctx->pwm, &pargs);
2289711c9d4d58 Boris Brezillon 2016-04-14 @440 duty = DIV_ROUND_UP(ctx->pwm_value * (pargs.period - 1), MAX_PWM);
2289711c9d4d58 Boris Brezillon 2016-04-14 441 ret = pwm_config(ctx->pwm, duty, pargs.period);
48b9d5b4f40825 Kamil Debski 2014-11-03 442 if (ret)
48b9d5b4f40825 Kamil Debski 2014-11-03 443 return ret;
48b9d5b4f40825 Kamil Debski 2014-11-03 444 return pwm_enable(ctx->pwm);
d82d57767c8598 Kamil Debski 2014-07-16 445 }
d82d57767c8598 Kamil Debski 2014-07-16 446 #endif
d82d57767c8598 Kamil Debski 2014-07-16 447

:::::: The code at line 440 was first introduced by commit
:::::: 2289711c9d4d588954ff86a06685f1579bf6c446 hwmon: pwm-fan: Use pwm_get_args() where appropriate

:::::: TO: Boris Brezillon <boris.brezillon@xxxxxxxxxxxxxxxxxx>
:::::: CC: Thierry Reding <thierry.reding@xxxxxxxxx>

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