Re: [PATCH v2 2/3] rtc: sophgo: add rtc support for Sophgo CV1800 SoC

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

Hi Jingbao,

kernel test robot noticed the following build errors:

[auto build test ERROR on abelloni/rtc-next]
[also build test ERROR on robh/for-next linus/master v6.7-rc5 next-20231215]
[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#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Jingbao-Qiu/dt-bindings-rtc-sophgo-add-RTC-support-for-Sophgo-CV1800-series-SoC/20231217-191123
base:   https://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux.git rtc-next
patch link:    https://lore.kernel.org/r/20231217110952.78784-3-qiujingbao.dlmu%40gmail.com
patch subject: [PATCH v2 2/3] rtc: sophgo: add rtc support for Sophgo CV1800 SoC
config: sparc-allmodconfig (https://download.01.org/0day-ci/archive/20231218/202312180655.uM6zOZlv-lkp@intel.com/config)
compiler: sparc64-linux-gcc (GCC) 13.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231218/202312180655.uM6zOZlv-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202312180655.uM6zOZlv-lkp@intel.com/

All errors (new ones prefixed by >>):

   drivers/rtc/rtc-cv1800.c: In function 'cv1800_rtc_alarm_irq_enable':
>> drivers/rtc/rtc-cv1800.c:89:17: error: implicit declaration of function 'writel' [-Werror=implicit-function-declaration]
      89 |                 writel(REG_ENABLE_FUN, info->base_data + ALARM_ENABLE);
         |                 ^~~~~~
   drivers/rtc/rtc-cv1800.c: In function 'cv1800_rtc_set_alarm':
>> drivers/rtc/rtc-cv1800.c:113:9: error: implicit declaration of function 'readl' [-Werror=implicit-function-declaration]
     113 |         readl(info->base_data + SEC_CNTR_VAL);
         |         ^~~~~
   cc1: some warnings being treated as errors


vim +/writel +89 drivers/rtc/rtc-cv1800.c

    83	
    84	static int cv1800_rtc_alarm_irq_enable(struct device *dev, unsigned int enabled)
    85	{
    86		struct cv1800_priv *info = dev_get_drvdata(dev);
    87	
    88		if (enabled)
  > 89			writel(REG_ENABLE_FUN, info->base_data + ALARM_ENABLE);
    90		else
    91			writel(REG_DISABLE_FUN, info->base_data + ALARM_ENABLE);
    92	
    93		return 0;
    94	}
    95	
    96	static int cv1800_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm)
    97	{
    98		struct cv1800_priv *info = dev_get_drvdata(dev);
    99		unsigned long alarm_time;
   100	
   101		alarm_time = rtc_tm_to_time64(&alrm->time);
   102	
   103		if (alarm_time > SEC_MAX_VAL)
   104			return -EINVAL;
   105	
   106		writel(REG_DISABLE_FUN, info->base_data + ALARM_ENABLE);
   107	
   108		udelay(DEALY_TIME_PREPARE);
   109	
   110		writel(alarm_time, info->base_data + ALARM_TIME);
   111		writel(REG_ENABLE_FUN, info->base_data + ALARM_ENABLE);
   112	
 > 113		readl(info->base_data + SEC_CNTR_VAL);
   114	
   115		return 0;
   116	}
   117	

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