[ammarfaizi2-block:google/android/kernel/common/android-4.19-stable 75/9999] drivers/pwm/pwm-stm32-lp.c:63:41: warning: format '%u' expects argument of type 'unsigned int', but argument 4 has type 'u64' {aka 'long long unsigned int'}

From: kernel test robot
Date: Fri Jan 21 2022 - 19:40:15 EST

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Hi Fenglin,

FYI, the error/warning still remains.

tree: https://github.com/ammarfaizi2/linux-block google/android/kernel/common/android-4.19-stable
head: 90a691fca4c2525068d9908ac203e9f09e4e33c0
commit: d892c9f3571faa2e691fc3a9eb6ea4f4da1d7eab [75/9999] ANDROID: GKI: pwm: core: Add option to config PWM duty/period with u64 data length
config: arm-buildonly-randconfig-r002-20220121 (https://download.01.org/0day-ci/archive/20220122/202201220851.GWJU03D1-lkp@xxxxxxxxx/config)
compiler: arm-linux-gnueabi-gcc (GCC) 11.2.0
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/ammarfaizi2/linux-block/commit/d892c9f3571faa2e691fc3a9eb6ea4f4da1d7eab
git remote add ammarfaizi2-block https://github.com/ammarfaizi2/linux-block
git fetch --no-tags ammarfaizi2-block google/android/kernel/common/android-4.19-stable
git checkout d892c9f3571faa2e691fc3a9eb6ea4f4da1d7eab
# save the config file to linux build tree
mkdir build_dir
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=arm SHELL=/bin/bash drivers/pwm/

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

All warnings (new ones prefixed by >>):

In file included from include/linux/platform_device.h:14,
from drivers/pwm/pwm-stm32-lp.c:16:
drivers/pwm/pwm-stm32-lp.c: In function 'stm32_pwm_lp_apply':
>> drivers/pwm/pwm-stm32-lp.c:63:41: warning: format '%u' expects argument of type 'unsigned int', but argument 4 has type 'u64' {aka 'long long unsigned int'} [-Wformat=]
63 | dev_dbg(priv->chip.dev, "Can't reach %u ns\n", state->period);
| ^~~~~~~~~~~~~~~~~~~~~
include/linux/device.h:1426:22: note: in definition of macro 'dev_fmt'
1426 | #define dev_fmt(fmt) fmt
| ^~~
drivers/pwm/pwm-stm32-lp.c:63:17: note: in expansion of macro 'dev_dbg'
63 | dev_dbg(priv->chip.dev, "Can't reach %u ns\n", state->period);
| ^~~~~~~
drivers/pwm/pwm-stm32-lp.c:63:55: note: format string is defined here
63 | dev_dbg(priv->chip.dev, "Can't reach %u ns\n", state->period);
| ~^
| |
| unsigned int
| %llu

vim +63 drivers/pwm/pwm-stm32-lp.c

e70a540b4e0230 Fabrice Gasnier 2017-08-28 32
e70a540b4e0230 Fabrice Gasnier 2017-08-28 33 static int stm32_pwm_lp_apply(struct pwm_chip *chip, struct pwm_device *pwm,
e70a540b4e0230 Fabrice Gasnier 2017-08-28 34 struct pwm_state *state)
e70a540b4e0230 Fabrice Gasnier 2017-08-28 35 {
e70a540b4e0230 Fabrice Gasnier 2017-08-28 36 struct stm32_pwm_lp *priv = to_stm32_pwm_lp(chip);
e70a540b4e0230 Fabrice Gasnier 2017-08-28 37 unsigned long long prd, div, dty;
e70a540b4e0230 Fabrice Gasnier 2017-08-28 38 struct pwm_state cstate;
e70a540b4e0230 Fabrice Gasnier 2017-08-28 39 u32 val, mask, cfgr, presc = 0;
e70a540b4e0230 Fabrice Gasnier 2017-08-28 40 bool reenable;
e70a540b4e0230 Fabrice Gasnier 2017-08-28 41 int ret;
e70a540b4e0230 Fabrice Gasnier 2017-08-28 42
e70a540b4e0230 Fabrice Gasnier 2017-08-28 43 pwm_get_state(pwm, &cstate);
e70a540b4e0230 Fabrice Gasnier 2017-08-28 44 reenable = !cstate.enabled;
e70a540b4e0230 Fabrice Gasnier 2017-08-28 45
e70a540b4e0230 Fabrice Gasnier 2017-08-28 46 if (!state->enabled) {
e70a540b4e0230 Fabrice Gasnier 2017-08-28 47 if (cstate.enabled) {
e70a540b4e0230 Fabrice Gasnier 2017-08-28 48 /* Disable LP timer */
e70a540b4e0230 Fabrice Gasnier 2017-08-28 49 ret = regmap_write(priv->regmap, STM32_LPTIM_CR, 0);
e70a540b4e0230 Fabrice Gasnier 2017-08-28 50 if (ret)
e70a540b4e0230 Fabrice Gasnier 2017-08-28 51 return ret;
e70a540b4e0230 Fabrice Gasnier 2017-08-28 52 /* disable clock to PWM counter */
e70a540b4e0230 Fabrice Gasnier 2017-08-28 53 clk_disable(priv->clk);
e70a540b4e0230 Fabrice Gasnier 2017-08-28 54 }
e70a540b4e0230 Fabrice Gasnier 2017-08-28 55 return 0;
e70a540b4e0230 Fabrice Gasnier 2017-08-28 56 }
e70a540b4e0230 Fabrice Gasnier 2017-08-28 57
e70a540b4e0230 Fabrice Gasnier 2017-08-28 58 /* Calculate the period and prescaler value */
e70a540b4e0230 Fabrice Gasnier 2017-08-28 59 div = (unsigned long long)clk_get_rate(priv->clk) * state->period;
e70a540b4e0230 Fabrice Gasnier 2017-08-28 60 do_div(div, NSEC_PER_SEC);
65348659535d23 Fabrice Gasnier 2019-09-18 61 if (!div) {
65348659535d23 Fabrice Gasnier 2019-09-18 62 /* Clock is too slow to achieve requested period. */
65348659535d23 Fabrice Gasnier 2019-09-18 @63 dev_dbg(priv->chip.dev, "Can't reach %u ns\n", state->period);
65348659535d23 Fabrice Gasnier 2019-09-18 64 return -EINVAL;
65348659535d23 Fabrice Gasnier 2019-09-18 65 }
65348659535d23 Fabrice Gasnier 2019-09-18 66
e70a540b4e0230 Fabrice Gasnier 2017-08-28 67 prd = div;
e70a540b4e0230 Fabrice Gasnier 2017-08-28 68 while (div > STM32_LPTIM_MAX_ARR) {
e70a540b4e0230 Fabrice Gasnier 2017-08-28 69 presc++;
e70a540b4e0230 Fabrice Gasnier 2017-08-28 70 if ((1 << presc) > STM32_LPTIM_MAX_PRESCALER) {
e70a540b4e0230 Fabrice Gasnier 2017-08-28 71 dev_err(priv->chip.dev, "max prescaler exceeded\n");
e70a540b4e0230 Fabrice Gasnier 2017-08-28 72 return -EINVAL;
e70a540b4e0230 Fabrice Gasnier 2017-08-28 73 }
e70a540b4e0230 Fabrice Gasnier 2017-08-28 74 div = prd >> presc;
e70a540b4e0230 Fabrice Gasnier 2017-08-28 75 }
e70a540b4e0230 Fabrice Gasnier 2017-08-28 76 prd = div;
e70a540b4e0230 Fabrice Gasnier 2017-08-28 77
e70a540b4e0230 Fabrice Gasnier 2017-08-28 78 /* Calculate the duty cycle */
e70a540b4e0230 Fabrice Gasnier 2017-08-28 79 dty = prd * state->duty_cycle;
e70a540b4e0230 Fabrice Gasnier 2017-08-28 80 do_div(dty, state->period);
e70a540b4e0230 Fabrice Gasnier 2017-08-28 81
e70a540b4e0230 Fabrice Gasnier 2017-08-28 82 if (!cstate.enabled) {
e70a540b4e0230 Fabrice Gasnier 2017-08-28 83 /* enable clock to drive PWM counter */
e70a540b4e0230 Fabrice Gasnier 2017-08-28 84 ret = clk_enable(priv->clk);
e70a540b4e0230 Fabrice Gasnier 2017-08-28 85 if (ret)
e70a540b4e0230 Fabrice Gasnier 2017-08-28 86 return ret;
e70a540b4e0230 Fabrice Gasnier 2017-08-28 87 }
e70a540b4e0230 Fabrice Gasnier 2017-08-28 88
e70a540b4e0230 Fabrice Gasnier 2017-08-28 89 ret = regmap_read(priv->regmap, STM32_LPTIM_CFGR, &cfgr);
e70a540b4e0230 Fabrice Gasnier 2017-08-28 90 if (ret)
e70a540b4e0230 Fabrice Gasnier 2017-08-28 91 goto err;
e70a540b4e0230 Fabrice Gasnier 2017-08-28 92
e70a540b4e0230 Fabrice Gasnier 2017-08-28 93 if ((FIELD_GET(STM32_LPTIM_PRESC, cfgr) != presc) ||
e70a540b4e0230 Fabrice Gasnier 2017-08-28 94 (FIELD_GET(STM32_LPTIM_WAVPOL, cfgr) != state->polarity)) {
e70a540b4e0230 Fabrice Gasnier 2017-08-28 95 val = FIELD_PREP(STM32_LPTIM_PRESC, presc);
e70a540b4e0230 Fabrice Gasnier 2017-08-28 96 val |= FIELD_PREP(STM32_LPTIM_WAVPOL, state->polarity);
e70a540b4e0230 Fabrice Gasnier 2017-08-28 97 mask = STM32_LPTIM_PRESC | STM32_LPTIM_WAVPOL;
e70a540b4e0230 Fabrice Gasnier 2017-08-28 98
e70a540b4e0230 Fabrice Gasnier 2017-08-28 99 /* Must disable LP timer to modify CFGR */
e70a540b4e0230 Fabrice Gasnier 2017-08-28 100 reenable = true;
e70a540b4e0230 Fabrice Gasnier 2017-08-28 101 ret = regmap_write(priv->regmap, STM32_LPTIM_CR, 0);
e70a540b4e0230 Fabrice Gasnier 2017-08-28 102 if (ret)
e70a540b4e0230 Fabrice Gasnier 2017-08-28 103 goto err;
e70a540b4e0230 Fabrice Gasnier 2017-08-28 104
e70a540b4e0230 Fabrice Gasnier 2017-08-28 105 ret = regmap_update_bits(priv->regmap, STM32_LPTIM_CFGR, mask,
e70a540b4e0230 Fabrice Gasnier 2017-08-28 106 val);
e70a540b4e0230 Fabrice Gasnier 2017-08-28 107 if (ret)
e70a540b4e0230 Fabrice Gasnier 2017-08-28 108 goto err;
e70a540b4e0230 Fabrice Gasnier 2017-08-28 109 }
e70a540b4e0230 Fabrice Gasnier 2017-08-28 110
e70a540b4e0230 Fabrice Gasnier 2017-08-28 111 if (reenable) {
e70a540b4e0230 Fabrice Gasnier 2017-08-28 112 /* Must (re)enable LP timer to modify CMP & ARR */
e70a540b4e0230 Fabrice Gasnier 2017-08-28 113 ret = regmap_write(priv->regmap, STM32_LPTIM_CR,
e70a540b4e0230 Fabrice Gasnier 2017-08-28 114 STM32_LPTIM_ENABLE);
e70a540b4e0230 Fabrice Gasnier 2017-08-28 115 if (ret)
e70a540b4e0230 Fabrice Gasnier 2017-08-28 116 goto err;
e70a540b4e0230 Fabrice Gasnier 2017-08-28 117 }
e70a540b4e0230 Fabrice Gasnier 2017-08-28 118
e70a540b4e0230 Fabrice Gasnier 2017-08-28 119 ret = regmap_write(priv->regmap, STM32_LPTIM_ARR, prd - 1);
e70a540b4e0230 Fabrice Gasnier 2017-08-28 120 if (ret)
e70a540b4e0230 Fabrice Gasnier 2017-08-28 121 goto err;
e70a540b4e0230 Fabrice Gasnier 2017-08-28 122
e70a540b4e0230 Fabrice Gasnier 2017-08-28 123 ret = regmap_write(priv->regmap, STM32_LPTIM_CMP, prd - (1 + dty));
e70a540b4e0230 Fabrice Gasnier 2017-08-28 124 if (ret)
e70a540b4e0230 Fabrice Gasnier 2017-08-28 125 goto err;
e70a540b4e0230 Fabrice Gasnier 2017-08-28 126
e70a540b4e0230 Fabrice Gasnier 2017-08-28 127 /* ensure CMP & ARR registers are properly written */
e70a540b4e0230 Fabrice Gasnier 2017-08-28 128 ret = regmap_read_poll_timeout(priv->regmap, STM32_LPTIM_ISR, val,
e70a540b4e0230 Fabrice Gasnier 2017-08-28 129 (val & STM32_LPTIM_CMPOK_ARROK),
e70a540b4e0230 Fabrice Gasnier 2017-08-28 130 100, 1000);
e70a540b4e0230 Fabrice Gasnier 2017-08-28 131 if (ret) {
e70a540b4e0230 Fabrice Gasnier 2017-08-28 132 dev_err(priv->chip.dev, "ARR/CMP registers write issue\n");
e70a540b4e0230 Fabrice Gasnier 2017-08-28 133 goto err;
e70a540b4e0230 Fabrice Gasnier 2017-08-28 134 }
e70a540b4e0230 Fabrice Gasnier 2017-08-28 135 ret = regmap_write(priv->regmap, STM32_LPTIM_ICR,
e70a540b4e0230 Fabrice Gasnier 2017-08-28 136 STM32_LPTIM_CMPOKCF_ARROKCF);
e70a540b4e0230 Fabrice Gasnier 2017-08-28 137 if (ret)
e70a540b4e0230 Fabrice Gasnier 2017-08-28 138 goto err;
e70a540b4e0230 Fabrice Gasnier 2017-08-28 139
e70a540b4e0230 Fabrice Gasnier 2017-08-28 140 if (reenable) {
e70a540b4e0230 Fabrice Gasnier 2017-08-28 141 /* Start LP timer in continuous mode */
e70a540b4e0230 Fabrice Gasnier 2017-08-28 142 ret = regmap_update_bits(priv->regmap, STM32_LPTIM_CR,
e70a540b4e0230 Fabrice Gasnier 2017-08-28 143 STM32_LPTIM_CNTSTRT,
e70a540b4e0230 Fabrice Gasnier 2017-08-28 144 STM32_LPTIM_CNTSTRT);
e70a540b4e0230 Fabrice Gasnier 2017-08-28 145 if (ret) {
e70a540b4e0230 Fabrice Gasnier 2017-08-28 146 regmap_write(priv->regmap, STM32_LPTIM_CR, 0);
e70a540b4e0230 Fabrice Gasnier 2017-08-28 147 goto err;
e70a540b4e0230 Fabrice Gasnier 2017-08-28 148 }
e70a540b4e0230 Fabrice Gasnier 2017-08-28 149 }
e70a540b4e0230 Fabrice Gasnier 2017-08-28 150
e70a540b4e0230 Fabrice Gasnier 2017-08-28 151 return 0;
e70a540b4e0230 Fabrice Gasnier 2017-08-28 152 err:
e70a540b4e0230 Fabrice Gasnier 2017-08-28 153 if (!cstate.enabled)
e70a540b4e0230 Fabrice Gasnier 2017-08-28 154 clk_disable(priv->clk);
e70a540b4e0230 Fabrice Gasnier 2017-08-28 155
e70a540b4e0230 Fabrice Gasnier 2017-08-28 156 return ret;
e70a540b4e0230 Fabrice Gasnier 2017-08-28 157 }
e70a540b4e0230 Fabrice Gasnier 2017-08-28 158

:::::: The code at line 63 was first introduced by commit
:::::: 65348659535d23e6fb7a79aa9d54332479cf980e pwm: stm32-lp: Add check in case requested period cannot be achieved

:::::: TO: Fabrice Gasnier <fabrice.gasnier@xxxxxx>
:::::: CC: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

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

Next message: Jane Chu: "Re: Phantom PMEM poison issue"
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