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Subject[chenxing:msc313_mainlining 53/62] drivers/rtc/rtc-msc313.c:54:19: error: implicit declaration of function 'readw'
tree:   git://github.com/linux-chenxing/linux.git msc313_mainlining
head: 00ca14821cbd3f21593b24fb75d0c1a1a4ad9a26
commit: fab8dc2356bfc1a76d65a839a3b3fb9173b497a8 [53/62] rtc: Add support for the MSTAR MSC313 RTC
config: sparc-randconfig-c004-20211025 (attached as .config)
compiler: sparc64-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/linux-chenxing/linux/commit/fab8dc2356bfc1a76d65a839a3b3fb9173b497a8
git remote add chenxing git://github.com/linux-chenxing/linux.git
git fetch --no-tags chenxing msc313_mainlining
git checkout fab8dc2356bfc1a76d65a839a3b3fb9173b497a8
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross ARCH=sparc

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-msc313.c: In function 'msc313_rtc_read_alarm':
>> drivers/rtc/rtc-msc313.c:54:19: error: implicit declaration of function 'readw' [-Werror=implicit-function-declaration]
54 | seconds = readw(priv->rtc_base + REG_RTC_MATCH_VAL_L)
| ^~~~~
drivers/rtc/rtc-msc313.c: In function 'msc313_rtc_alarm_irq_enable':
>> drivers/rtc/rtc-msc313.c:75:9: error: implicit declaration of function 'writew' [-Werror=implicit-function-declaration]
75 | writew(reg, priv->rtc_base + REG_RTC_CTRL);
| ^~~~~~
cc1: some warnings being treated as errors


vim +/readw +54 drivers/rtc/rtc-msc313.c

48
49 static int msc313_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alarm)
50 {
51 struct msc313_rtc *priv = dev_get_drvdata(dev);
52 unsigned long seconds;
53
> 54 seconds = readw(priv->rtc_base + REG_RTC_MATCH_VAL_L)
55 | (readw(priv->rtc_base + REG_RTC_MATCH_VAL_H) << 16);
56
57 rtc_time64_to_tm(seconds, &alarm->time);
58
59 if (!(readw(priv->rtc_base + REG_RTC_CTRL) & INT_MASK_BIT))
60 alarm->enabled = 1;
61
62 return 0;
63 }
64
65 static int msc313_rtc_alarm_irq_enable(struct device *dev, unsigned int enabled)
66 {
67 struct msc313_rtc *priv = dev_get_drvdata(dev);
68 u16 reg;
69
70 reg = readw(priv->rtc_base + REG_RTC_CTRL);
71 if (enabled)
72 reg &= ~INT_MASK_BIT;
73 else
74 reg |= INT_MASK_BIT;
> 75 writew(reg, priv->rtc_base + REG_RTC_CTRL);
76 return 0;
77 }
78

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