drivers/rtc/rtc-pcf8523.c:288:24: sparse: sparse: incorrect type in initializer (different address spaces)

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

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CC: kbuild-all(a)lists.01.org
CC: linux-kernel(a)vger.kernel.org
TO: Alexandre Belloni <alexandre.belloni@bootlin.com>

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   df2fbf5bfa0e7fff8b4784507e4d68f200454318
commit: 244cf8f0ed2778e1897b64b9043367b7263f5590 rtc: pcf8523: return meaningful value for RTC_VL_READ
date:   6 months ago
:::::: branch date: 16 hours ago
:::::: commit date: 6 months ago
config: openrisc-randconfig-s032-20200613 (attached as .config)
compiler: or1k-linux-gcc (GCC) 9.3.0
reproduce:
        # apt-get install sparse
        # sparse version: v0.6.1-250-g42323db3-dirty
        git checkout 244cf8f0ed2778e1897b64b9043367b7263f5590
        # save the attached .config to linux build tree
        make W=1 C=1 ARCH=openrisc CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__'

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


sparse warnings: (new ones prefixed by >>)

>> drivers/rtc/rtc-pcf8523.c:288:24: sparse: sparse: incorrect type in initializer (different address spaces) @@     expected unsigned int *__pu_addr @@     got unsigned int [noderef] <asn:1> * @@
>> drivers/rtc/rtc-pcf8523.c:288:24: sparse:     expected unsigned int *__pu_addr
>> drivers/rtc/rtc-pcf8523.c:288:24: sparse:     got unsigned int [noderef] <asn:1> *

# https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=244cf8f0ed2778e1897b64b9043367b7263f5590
git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git remote update linus
git checkout 244cf8f0ed2778e1897b64b9043367b7263f5590
vim +288 drivers/rtc/rtc-pcf8523.c

f803f0d079ded4 Thierry Reding    2012-12-17  272  
f32bc70d5f938c Jesper Nilsson    2013-02-21  273  #ifdef CONFIG_RTC_INTF_DEV
f32bc70d5f938c Jesper Nilsson    2013-02-21  274  static int pcf8523_rtc_ioctl(struct device *dev, unsigned int cmd,
f32bc70d5f938c Jesper Nilsson    2013-02-21  275  			     unsigned long arg)
f32bc70d5f938c Jesper Nilsson    2013-02-21  276  {
f32bc70d5f938c Jesper Nilsson    2013-02-21  277  	struct i2c_client *client = to_i2c_client(dev);
ecb4a353d3afd4 Baruch Siach      2018-12-05  278  	int ret;
f32bc70d5f938c Jesper Nilsson    2013-02-21  279  
f32bc70d5f938c Jesper Nilsson    2013-02-21  280  	switch (cmd) {
f32bc70d5f938c Jesper Nilsson    2013-02-21  281  	case RTC_VL_READ:
ecb4a353d3afd4 Baruch Siach      2018-12-05  282  		ret = pcf8523_voltage_low(client);
ecb4a353d3afd4 Baruch Siach      2018-12-05  283  		if (ret < 0)
ecb4a353d3afd4 Baruch Siach      2018-12-05  284  			return ret;
244cf8f0ed2778 Alexandre Belloni 2019-12-14  285  		if (ret)
244cf8f0ed2778 Alexandre Belloni 2019-12-14  286  			ret = RTC_VL_BACKUP_LOW;
f32bc70d5f938c Jesper Nilsson    2013-02-21  287  
244cf8f0ed2778 Alexandre Belloni 2019-12-14 @288  		return put_user(ret, (unsigned int __user *)arg);
f32bc70d5f938c Jesper Nilsson    2013-02-21  289  
f32bc70d5f938c Jesper Nilsson    2013-02-21  290  	default:
f32bc70d5f938c Jesper Nilsson    2013-02-21  291  		return -ENOIOCTLCMD;
f32bc70d5f938c Jesper Nilsson    2013-02-21  292  	}
f32bc70d5f938c Jesper Nilsson    2013-02-21  293  }
f32bc70d5f938c Jesper Nilsson    2013-02-21  294  #else
f32bc70d5f938c Jesper Nilsson    2013-02-21  295  #define pcf8523_rtc_ioctl NULL
f32bc70d5f938c Jesper Nilsson    2013-02-21  296  #endif
f32bc70d5f938c Jesper Nilsson    2013-02-21  297  

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

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