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Message-ID: <202202160144.hjSHJs2v-lkp@intel.com>
Date: Wed, 16 Feb 2022 01:42:05 +0800
From: kernel test robot <lkp@...el.com>
To: Kevin Kim <ckkim@...dkernel.com>
Cc: llvm@...ts.linux.dev, kbuild-all@...ts.01.org,
linux-kernel@...r.kernel.org, Dongjin Kim <tobetter@...il.com>,
Olliver Schinagl <oliver@...inagl.nl>
Subject: [tobetter:odroid-5.17.y 7/41] drivers/pwm/pwm-gpio.c:60:22: warning:
no previous prototype for function 'gpio_pwm_timer'
tree: https://github.com/tobetter/linux odroid-5.17.y
head: 992855288ffabfafb16c8ed7ce9a81fc64cfc89a
commit: 380f2027a31094e1f64a78ce0e424f02dea66bc7 [7/41] ODROID-COMMON: pwm: gpio: Add a generic gpio based PWM driver
config: hexagon-allyesconfig (https://download.01.org/0day-ci/archive/20220216/202202160144.hjSHJs2v-lkp@intel.com/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project 37f422f4ac31c8b8041c6b62065263314282dab6)
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/tobetter/linux/commit/380f2027a31094e1f64a78ce0e424f02dea66bc7
git remote add tobetter https://github.com/tobetter/linux
git fetch --no-tags tobetter odroid-5.17.y
git checkout 380f2027a31094e1f64a78ce0e424f02dea66bc7
# save the config file to linux build tree
mkdir build_dir
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=hexagon SHELL=/bin/bash drivers/pwm/
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@...el.com>
All warnings (new ones prefixed by >>):
>> drivers/pwm/pwm-gpio.c:60:22: warning: no previous prototype for function 'gpio_pwm_timer' [-Wmissing-prototypes]
enum hrtimer_restart gpio_pwm_timer(struct hrtimer *timer)
^
drivers/pwm/pwm-gpio.c:60:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
enum hrtimer_restart gpio_pwm_timer(struct hrtimer *timer)
^
static
1 warning generated.
vim +/gpio_pwm_timer +60 drivers/pwm/pwm-gpio.c
59
> 60 enum hrtimer_restart gpio_pwm_timer(struct hrtimer *timer)
61 {
62 struct gpio_pwm_data *gpio_data = container_of(timer,
63 struct gpio_pwm_data,
64 timer);
65 if (!gpio_data->run) {
66 gpio_pwm_off(gpio_data);
67 gpio_data->pin_on = false;
68 return HRTIMER_NORESTART;
69 }
70
71 if (!gpio_data->pin_on) {
72 hrtimer_forward_now(&gpio_data->timer,
73 ns_to_ktime(gpio_data->on_time));
74 gpio_pwm_on(gpio_data);
75 gpio_data->pin_on = true;
76 } else {
77 hrtimer_forward_now(&gpio_data->timer,
78 ns_to_ktime(gpio_data->off_time));
79 gpio_pwm_off(gpio_data);
80 gpio_data->pin_on = false;
81 }
82
83 return HRTIMER_RESTART;
84 }
85
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
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