Hi Miodrag,

[auto build test ERROR on linus/master]
[also build test ERROR on next-20170721]
[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/Aleksandar-Markovic/MIPS-Add-virtual-Ranchu-board-as-a-generic-based-board/20170724-062318
config: sparc64-allmodconfig (attached as .config)
compiler: sparc64-linux-gnu-gcc (Debian 6.3.0-18) 6.3.0 20170516
reproduce:
        wget 
https://raw.githubusercontent.com/01org/lkp-tests/master/sbin/make.cross -O 
~/bin/make.cross
        chmod +x ~/bin/make.cross
        # save the attached .config to linux build tree
        make.cross ARCH=sparc64 

All errors (new ones prefixed by >>):

   drivers/rtc/rtc-goldfish.c: In function 'goldfish_rtc_read_alarm':
>> drivers/rtc/rtc-goldfish.c:51:18: error: implicit declaration of function 
>> 'readl' [-Werror=implicit-function-declaration]
     rtc_alarm_low = readl(base + TIMER_ALARM_LOW);
                     ^~~~~
   drivers/rtc/rtc-goldfish.c: In function 'goldfish_rtc_set_alarm':
>> drivers/rtc/rtc-goldfish.c:86:3: error: implicit declaration of function 
>> 'writel' [-Werror=implicit-function-declaration]
      writel((rtc_alarm >> 32), base + TIMER_ALARM_HIGH);
      ^~~~~~
   cc1: some warnings being treated as errors

vim +/readl +51 drivers/rtc/rtc-goldfish.c

    38  
    39  static int goldfish_rtc_read_alarm(struct device *dev,
    40                  struct rtc_wkalrm *alrm)
    41  {
    42          u64 rtc_alarm;
    43          u64 rtc_alarm_low;
    44          u64 rtc_alarm_high;
    45          void __iomem *base;
    46          struct goldfish_rtc *rtcdrv;
    47  
    48          rtcdrv = dev_get_drvdata(dev);
    49          base = rtcdrv->base;
    50  
  > 51          rtc_alarm_low = readl(base + TIMER_ALARM_LOW);
    52          rtc_alarm_high = readl(base + TIMER_ALARM_HIGH);
    53          rtc_alarm = (rtc_alarm_high << 32) | rtc_alarm_low;
    54  
    55          do_div(rtc_alarm, NSEC_PER_SEC);
    56          memset(alrm, 0, sizeof(struct rtc_wkalrm));
    57  
    58          rtc_time_to_tm(rtc_alarm, &(alrm->time));
    59  
    60          if (readl(base + TIMER_ALARM_STATUS))
    61                  alrm->enabled = 1;
    62          else
    63                  alrm->enabled = 0;
    64  
    65          return 0;
    66  }
    67  
    68  static int goldfish_rtc_set_alarm(struct device *dev,
    69                  struct rtc_wkalrm *alrm)
    70  {
    71          struct goldfish_rtc *rtcdrv;
    72          unsigned long rtc_alarm;
    73          u64 rtc_status_reg;
    74          void __iomem *base;
    75          int ret = 0;
    76  
    77          rtcdrv = dev_get_drvdata(dev);
    78          base = rtcdrv->base;
    79  
    80          if (alrm->enabled) {
    81                  ret = rtc_tm_to_time(&(alrm->time), &rtc_alarm);
    82                  if (ret != 0)
    83                          return ret;
    84  
    85                  rtc_alarm *= NSEC_PER_SEC;
  > 86                  writel((rtc_alarm >> 32), base + TIMER_ALARM_HIGH);
    87                  writel(rtc_alarm, base + TIMER_ALARM_LOW);
    88          } else {
    89                  /*
    90                   * if this function was called with enabled=0
    91                   * then it could mean that the application is
    92                   * trying to cancel an ongoing alarm
    93                   */
    94                  rtc_status_reg = readl(base + TIMER_ALARM_STATUS);
    95                  if (rtc_status_reg)
    96                          writel(1, base + TIMER_CLEAR_ALARM);
    97          }
    98  
    99          return ret;
   100  }
   101  

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation

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