Hi Masahiro,

First bad commit (maybe != root cause):

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 
master
head:   7af08140979a6e7e12b78c93b8625c8d25b084e2
commit: ea29b20a828511de3348334e529a3d046a180416 init/Kconfig: make 
COMPILE_TEST depend on HAS_IOMEM
date:   5 weeks ago
config: s390-randconfig-s032-20210420 (attached as .config)
compiler: s390-linux-gcc (GCC) 9.3.0
reproduce:
        wget 
https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O 
~/bin/make.cross
        chmod +x ~/bin/make.cross
        # apt-get install sparse
        # sparse version: v0.6.3-330-g09ec74f6-dirty
        # 
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ea29b20a828511de3348334e529a3d046a180416
        git remote add linus 
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout ea29b20a828511de3348334e529a3d046a180416
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross C=1 
CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' W=1 ARCH=s390 

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


sparse warnings: (new ones prefixed by >>)
>> drivers/watchdog/at91rm9200_wdt.c:219:27: sparse: sparse: incorrect type in 
>> initializer (incompatible argument 2 (different address spaces)) @@     
>> expected long ( *write )( ... ) @@     got long ( * )( ... ) @@
   drivers/watchdog/at91rm9200_wdt.c:219:27: sparse:     expected long ( *write 
)( ... )
   drivers/watchdog/at91rm9200_wdt.c:219:27: sparse:     got long ( * )( ... )

vim +219 drivers/watchdog/at91rm9200_wdt.c

853807fb500a94 drivers/char/watchdog/at91_wdt.c  Andrew Victor    2006-03-14  
211  
62322d2554d2f9 drivers/char/watchdog/at91_wdt.c  Arjan van de Ven 2006-07-03  
212  static const struct file_operations at91wdt_fops = {
853807fb500a94 drivers/char/watchdog/at91_wdt.c  Andrew Victor    2006-03-14  
213       .owner          = THIS_MODULE,
853807fb500a94 drivers/char/watchdog/at91_wdt.c  Andrew Victor    2006-03-14  
214       .llseek         = no_llseek,
2760600da2a13d drivers/watchdog/at91rm9200_wdt.c Alan Cox         2008-05-19  
215       .unlocked_ioctl = at91_wdt_ioctl,
b6dfb2477fb0bf drivers/watchdog/at91rm9200_wdt.c Arnd Bergmann    2019-06-03  
216       .compat_ioctl   = compat_ptr_ioctl,
853807fb500a94 drivers/char/watchdog/at91_wdt.c  Andrew Victor    2006-03-14  
217       .open           = at91_wdt_open,
853807fb500a94 drivers/char/watchdog/at91_wdt.c  Andrew Victor    2006-03-14  
218       .release        = at91_wdt_close,
853807fb500a94 drivers/char/watchdog/at91_wdt.c  Andrew Victor    2006-03-14 
@219       .write          = at91_wdt_write,
853807fb500a94 drivers/char/watchdog/at91_wdt.c  Andrew Victor    2006-03-14  
220  };
853807fb500a94 drivers/char/watchdog/at91_wdt.c  Andrew Victor    2006-03-14  
221  

:::::: The code at line 219 was first introduced by commit
:::::: 853807fb500a9442d88646b7be92bfa51334f8e8 [WATCHDOG] at91_wdt.c - Atmel 
AT91RM9200 watchdog driver

:::::: TO: Andrew Victor <and...@sanpeople.com>
:::::: CC: Wim Van Sebroeck <w...@iguana.be>

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

Attachment: .config.gz
Description: application/gzip

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