linux-kernel - drivers/video/fbdev/imsttfb.c:1561:20: sparse: sparse: incorrect type in argument 1 (different address spaces)

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Message-ID: <202311302054.loV1YuMw-lkp@intel.com>
Date:   Thu, 30 Nov 2023 20:55:37 +0800
From:   kernel test robot <lkp@...el.com>
To:     Baoquan He <bhe@...hat.com>
Cc:     oe-kbuild-all@...ts.linux.dev, linux-kernel@...r.kernel.org,
        Andrew Morton <akpm@...ux-foundation.org>,
        Linux Memory Management List <linux-mm@...ck.org>,
        Christoph Hellwig <hch@....de>,
        "Mike Rapoport (IBM)" <rppt@...nel.org>
Subject: drivers/video/fbdev/imsttfb.c:1561:20: sparse: sparse: incorrect
 type in argument 1 (different address spaces)

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   3b47bc037bd44f142ac09848e8d3ecccc726be99
commit: 426b313f356a314af335899c51250dc0f49cd4a7 parisc: mm: convert to GENERIC_IOREMAP
date:   3 months ago
config: parisc-randconfig-m041-20230821 (https://download.01.org/0day-ci/archive/20231130/202311302054.loV1YuMw-lkp@intel.com/config)
compiler: hppa-linux-gcc (GCC) 12.3.0
reproduce: (https://download.01.org/0day-ci/archive/20231130/202311302054.loV1YuMw-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202311302054.loV1YuMw-lkp@intel.com/

sparse warnings: (new ones prefixed by >>)
   drivers/video/fbdev/imsttfb.c:1524:30: sparse: sparse: cast removes address space '__iomem' of expression
   drivers/video/fbdev/imsttfb.c:1524:27: sparse: sparse: incorrect type in assignment (different address spaces) @@     expected char [noderef] __iomem *screen_base @@     got unsigned char [usertype] * @@
   drivers/video/fbdev/imsttfb.c:1524:27: sparse:     expected char [noderef] __iomem *screen_base
   drivers/video/fbdev/imsttfb.c:1524:27: sparse:     got unsigned char [usertype] *
   drivers/video/fbdev/imsttfb.c:1533:27: sparse: sparse: cast removes address space '__iomem' of expression
>> drivers/video/fbdev/imsttfb.c:1561:20: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected void volatile [noderef] __iomem *addr @@     got unsigned char [usertype] *cmap_regs @@
   drivers/video/fbdev/imsttfb.c:1561:20: sparse:     expected void volatile [noderef] __iomem *addr
   drivers/video/fbdev/imsttfb.c:1561:20: sparse:     got unsigned char [usertype] *cmap_regs
   drivers/video/fbdev/imsttfb.c:1361:15: sparse: sparse: cast removes address space '__iomem' of expression
   drivers/video/fbdev/imsttfb.c:1362:16: sparse: sparse: cast removes address space '__iomem' of expression
--
>> drivers/video/fbdev/aty/atyfb_base.c:3734:37: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected void volatile [noderef] __iomem *addr @@     got unsigned char [usertype] *addr @@
   drivers/video/fbdev/aty/atyfb_base.c:3734:37: sparse:     expected void volatile [noderef] __iomem *addr
   drivers/video/fbdev/aty/atyfb_base.c:3734:37: sparse:     got unsigned char [usertype] *addr
   drivers/video/fbdev/aty/atyfb_base.c:1787:15: sparse: sparse: self-comparison always evaluates to false

vim +1561 drivers/video/fbdev/imsttfb.c

^1da177e4c3f41 drivers/video/imsttfb.c Linus Torvalds     2005-04-16  1553  
48c68c4f1b5424 drivers/video/imsttfb.c Greg Kroah-Hartman 2012-12-21  1554  static void imsttfb_remove(struct pci_dev *pdev)
^1da177e4c3f41 drivers/video/imsttfb.c Linus Torvalds     2005-04-16  1555  {
^1da177e4c3f41 drivers/video/imsttfb.c Linus Torvalds     2005-04-16  1556  	struct fb_info *info = pci_get_drvdata(pdev);
94f9e09ce531d4 drivers/video/imsttfb.c Antonino A. Daplas 2006-01-09  1557  	struct imstt_par *par = info->par;
^1da177e4c3f41 drivers/video/imsttfb.c Linus Torvalds     2005-04-16  1558  	int size = pci_resource_len(pdev, 0);
^1da177e4c3f41 drivers/video/imsttfb.c Linus Torvalds     2005-04-16  1559  
^1da177e4c3f41 drivers/video/imsttfb.c Linus Torvalds     2005-04-16  1560  	unregister_framebuffer(info);
^1da177e4c3f41 drivers/video/imsttfb.c Linus Torvalds     2005-04-16 @1561  	iounmap(par->cmap_regs);
^1da177e4c3f41 drivers/video/imsttfb.c Linus Torvalds     2005-04-16  1562  	iounmap(par->dc_regs);
^1da177e4c3f41 drivers/video/imsttfb.c Linus Torvalds     2005-04-16  1563  	iounmap(info->screen_base);
^1da177e4c3f41 drivers/video/imsttfb.c Linus Torvalds     2005-04-16  1564  	release_mem_region(info->fix.smem_start, size);
94f9e09ce531d4 drivers/video/imsttfb.c Antonino A. Daplas 2006-01-09  1565  	framebuffer_release(info);
^1da177e4c3f41 drivers/video/imsttfb.c Linus Torvalds     2005-04-16  1566  }
^1da177e4c3f41 drivers/video/imsttfb.c Linus Torvalds     2005-04-16  1567  

:::::: The code at line 1561 was first introduced by commit
:::::: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Linux-2.6.12-rc2

:::::: TO: Linus Torvalds <torvalds@...970.osdl.org>
:::::: CC: Linus Torvalds <torvalds@...970.osdl.org>

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki