Re: [PATCH v11 3/5] rtc: goldfish: use gf_ioread32()/gf_iowrite32()

[kernel test robot <lkp@intel.com>]

Hi Laurent,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on tip/timers/core]
[also build test ERROR on linux/master linus/master v5.16 next-20220120]
[cannot apply to geert-m68k/for-next]
[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/Laurent-Vivier/m68k-Add-Virtual-M68k-Machine/20220120-160832
base:   https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git 35e13e9da9afbce13c1d36465504ece4e65f24fe
config: nds32-randconfig-r014-20220120 (https://download.01.org/0day-ci/archive/20220121/202201210131.XfhBEwfV-lkp@intel.com/config)
compiler: nds32le-linux-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/0day-ci/linux/commit/82ea64fc7cab43e258085769ed1d90b0685bf091
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Laurent-Vivier/m68k-Add-Virtual-M68k-Machine/20220120-160832
        git checkout 82ea64fc7cab43e258085769ed1d90b0685bf091
        # 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=nds32 SHELL=/bin/bash drivers/

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

All errors (new ones prefixed by >>):

   drivers/rtc/rtc-goldfish.c: In function 'goldfish_rtc_read_alarm':
>> drivers/rtc/rtc-goldfish.c:44:25: error: implicit declaration of function 'gf_ioread32'; did you mean 'ioread32'? [-Werror=implicit-function-declaration]
      44 |         rtc_alarm_low = gf_ioread32(base + TIMER_ALARM_LOW);
         |                         ^~~~~~~~~~~
         |                         ioread32
   drivers/rtc/rtc-goldfish.c: In function 'goldfish_rtc_set_alarm':
>> drivers/rtc/rtc-goldfish.c:74:17: error: implicit declaration of function 'gf_iowrite32'; did you mean 'iowrite32'? [-Werror=implicit-function-declaration]
      74 |                 gf_iowrite32((rtc_alarm64 >> 32), base + TIMER_ALARM_HIGH);
         |                 ^~~~~~~~~~~~
         |                 iowrite32
   cc1: some warnings being treated as errors


vim +44 drivers/rtc/rtc-goldfish.c

    31	
    32	static int goldfish_rtc_read_alarm(struct device *dev,
    33					   struct rtc_wkalrm *alrm)
    34	{
    35		u64 rtc_alarm;
    36		u64 rtc_alarm_low;
    37		u64 rtc_alarm_high;
    38		void __iomem *base;
    39		struct goldfish_rtc *rtcdrv;
    40	
    41		rtcdrv = dev_get_drvdata(dev);
    42		base = rtcdrv->base;
    43	
  > 44		rtc_alarm_low = gf_ioread32(base + TIMER_ALARM_LOW);
    45		rtc_alarm_high = gf_ioread32(base + TIMER_ALARM_HIGH);
    46		rtc_alarm = (rtc_alarm_high << 32) | rtc_alarm_low;
    47	
    48		do_div(rtc_alarm, NSEC_PER_SEC);
    49		memset(alrm, 0, sizeof(struct rtc_wkalrm));
    50	
    51		rtc_time64_to_tm(rtc_alarm, &alrm->time);
    52	
    53		if (gf_ioread32(base + TIMER_ALARM_STATUS))
    54			alrm->enabled = 1;
    55		else
    56			alrm->enabled = 0;
    57	
    58		return 0;
    59	}
    60	
    61	static int goldfish_rtc_set_alarm(struct device *dev,
    62					  struct rtc_wkalrm *alrm)
    63	{
    64		struct goldfish_rtc *rtcdrv;
    65		u64 rtc_alarm64;
    66		u64 rtc_status_reg;
    67		void __iomem *base;
    68	
    69		rtcdrv = dev_get_drvdata(dev);
    70		base = rtcdrv->base;
    71	
    72		if (alrm->enabled) {
    73			rtc_alarm64 = rtc_tm_to_time64(&alrm->time) * NSEC_PER_SEC;
  > 74			gf_iowrite32((rtc_alarm64 >> 32), base + TIMER_ALARM_HIGH);
    75			gf_iowrite32(rtc_alarm64, base + TIMER_ALARM_LOW);
    76			gf_iowrite32(1, base + TIMER_IRQ_ENABLED);
    77		} else {
    78			/*
    79			 * if this function was called with enabled=0
    80			 * then it could mean that the application is
    81			 * trying to cancel an ongoing alarm
    82			 */
    83			rtc_status_reg = gf_ioread32(base + TIMER_ALARM_STATUS);
    84			if (rtc_status_reg)
    85				gf_iowrite32(1, base + TIMER_CLEAR_ALARM);
    86		}
    87	
    88		return 0;
    89	}
    90	

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