tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   92ed301919932f777713b9172e525674157e983d
commit: 670d0a4b10704667765f7d18f7592993d02783aa sparse: use identifiers to define address spaces
date:   6 weeks ago
config: arm-randconfig-s032-20200728 (attached as .config)
compiler: arm-linux-gnueabi-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: v0.6.2-94-geb6779f6-dirty
        git checkout 670d0a4b10704667765f7d18f7592993d02783aa
        # 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__' ARCH=arm 

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/video/fbdev/imsttfb.c:1513:30: sparse: sparse: cast removes address space '__iomem' of expression
   drivers/video/fbdev/imsttfb.c:1513:27: sparse: sparse: incorrect type in assignment (different address spaces) @@     expected char [noderef] __iomem *screen_base @@     got unsigned char [usertype] * @@
   drivers/video/fbdev/imsttfb.c:1513:27: sparse:     expected char [noderef] __iomem *screen_base
   drivers/video/fbdev/imsttfb.c:1513:27: sparse:     got unsigned char [usertype] *
   drivers/video/fbdev/imsttfb.c:1523:27: sparse: sparse: cast removes address space '__iomem' of expression
>> drivers/video/fbdev/imsttfb.c:1538:20: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected void volatile [noderef] __iomem *iomem_cookie @@     got unsigned char [usertype] *cmap_regs @@
>> drivers/video/fbdev/imsttfb.c:1538:20: sparse:     expected void volatile [noderef] __iomem *iomem_cookie
   drivers/video/fbdev/imsttfb.c:1538:20: sparse:     got unsigned char [usertype] *cmap_regs
   drivers/video/fbdev/imsttfb.c:1360:15: sparse: sparse: cast removes address space '__iomem' of expression
   drivers/video/fbdev/imsttfb.c:1361:16: sparse: sparse: cast removes address space '__iomem' of expression
--
>> drivers/scsi/pcmcia/nsp_cs.c:1669:34: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected void volatile [noderef] __iomem *iomem_cookie @@     got void * @@
>> drivers/scsi/pcmcia/nsp_cs.c:1669:34: sparse:     expected void volatile [noderef] __iomem *iomem_cookie
   drivers/scsi/pcmcia/nsp_cs.c:1669:34: sparse:     got void *
   drivers/scsi/pcmcia/nsp_cs.c: note: in included file:
>> drivers/scsi/pcmcia/nsp_io.h:231:24: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected void const volatile [noderef] __iomem *addr @@     got unsigned long *ptr @@
>> drivers/scsi/pcmcia/nsp_io.h:231:24: sparse:     expected void const volatile [noderef] __iomem *addr
   drivers/scsi/pcmcia/nsp_io.h:231:24: sparse:     got unsigned long *ptr
>> drivers/scsi/pcmcia/nsp_io.h:257:17: sparse: sparse: incorrect type in argument 2 (different address spaces) @@     expected void volatile [noderef] __iomem *addr @@     got unsigned long *ptr @@
>> drivers/scsi/pcmcia/nsp_io.h:257:17: sparse:     expected void volatile [noderef] __iomem *addr
   drivers/scsi/pcmcia/nsp_io.h:257:17: sparse:     got unsigned long *ptr

vim +1538 drivers/video/fbdev/imsttfb.c

^1da177e4c3f41 drivers/video/imsttfb.c Linus Torvalds     2005-04-16  1530  
48c68c4f1b5424 drivers/video/imsttfb.c Greg Kroah-Hartman 2012-12-21  1531  static void imsttfb_remove(struct pci_dev *pdev)
^1da177e4c3f41 drivers/video/imsttfb.c Linus Torvalds     2005-04-16  1532  {
^1da177e4c3f41 drivers/video/imsttfb.c Linus Torvalds     2005-04-16  1533  	struct fb_info *info = pci_get_drvdata(pdev);
94f9e09ce531d4 drivers/video/imsttfb.c Antonino A. Daplas 2006-01-09  1534  	struct imstt_par *par = info->par;
^1da177e4c3f41 drivers/video/imsttfb.c Linus Torvalds     2005-04-16  1535  	int size = pci_resource_len(pdev, 0);
^1da177e4c3f41 drivers/video/imsttfb.c Linus Torvalds     2005-04-16  1536  
^1da177e4c3f41 drivers/video/imsttfb.c Linus Torvalds     2005-04-16  1537  	unregister_framebuffer(info);
^1da177e4c3f41 drivers/video/imsttfb.c Linus Torvalds     2005-04-16 @1538  	iounmap(par->cmap_regs);
^1da177e4c3f41 drivers/video/imsttfb.c Linus Torvalds     2005-04-16  1539  	iounmap(par->dc_regs);
^1da177e4c3f41 drivers/video/imsttfb.c Linus Torvalds     2005-04-16  1540  	iounmap(info->screen_base);
^1da177e4c3f41 drivers/video/imsttfb.c Linus Torvalds     2005-04-16  1541  	release_mem_region(info->fix.smem_start, size);
94f9e09ce531d4 drivers/video/imsttfb.c Antonino A. Daplas 2006-01-09  1542  	framebuffer_release(info);
^1da177e4c3f41 drivers/video/imsttfb.c Linus Torvalds     2005-04-16  1543  }
^1da177e4c3f41 drivers/video/imsttfb.c Linus Torvalds     2005-04-16  1544  

:::::: The code at line 1538 was first introduced by commit
:::::: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Linux-2.6.12-rc2

:::::: TO: Linus Torvalds <torvalds@ppc970.osdl.org>
:::::: CC: Linus Torvalds <torvalds@ppc970.osdl.org>

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