linux-kernel - drivers/video/fbdev/sstfb.c:337:23: sparse: sparse: incorrect type in argument 1 (different address spaces)

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Message-ID: <202302050615.2F4POBYV-lkp@intel.com>
Date:   Sun, 5 Feb 2023 06:15:41 +0800
From:   kernel test robot <lkp@...el.com>
To:     Stafford Horne <shorne@...il.com>
Cc:     oe-kbuild-all@...ts.linux.dev, linux-kernel@...r.kernel.org
Subject: drivers/video/fbdev/sstfb.c:337:23: sparse: sparse: incorrect type
 in argument 1 (different address spaces)

Hi Stafford,

First bad commit (maybe != root cause):

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   db27c22251e7c8f3a9d5bfb55c9c8c701a70bbb3
commit: ded2ee36313c941f1a12b6f85cde295b575264ae openrisc: Add pci bus support
date:   6 months ago
config: openrisc-randconfig-s032-20230205 (https://download.01.org/0day-ci/archive/20230205/202302050615.2F4POBYV-lkp@intel.com/config)
compiler: or1k-linux-gcc (GCC) 12.1.0
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: v0.6.4-39-gce1a6720-dirty
        # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ded2ee36313c941f1a12b6f85cde295b575264ae
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout ded2ee36313c941f1a12b6f85cde295b575264ae
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=openrisc olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=openrisc SHELL=/bin/bash drivers/video/fbdev/

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@...el.com>

sparse warnings: (new ones prefixed by >>)
>> drivers/video/fbdev/sstfb.c:337:23: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected void *s @@     got char [noderef] __iomem *screen_base @@
   drivers/video/fbdev/sstfb.c:337:23: sparse:     expected void *s
   drivers/video/fbdev/sstfb.c:337:23: sparse:     got char [noderef] __iomem *screen_base

vim +337 drivers/video/fbdev/sstfb.c

^1da177e4c3f41 drivers/video/sstfb.c Linus Torvalds 2005-04-16  330  
^1da177e4c3f41 drivers/video/sstfb.c Linus Torvalds 2005-04-16  331  /*
^1da177e4c3f41 drivers/video/sstfb.c Linus Torvalds 2005-04-16  332   * clear lfb screen
^1da177e4c3f41 drivers/video/sstfb.c Linus Torvalds 2005-04-16  333   */
^1da177e4c3f41 drivers/video/sstfb.c Linus Torvalds 2005-04-16  334  static void sstfb_clear_screen(struct fb_info *info)
^1da177e4c3f41 drivers/video/sstfb.c Linus Torvalds 2005-04-16  335  {
^1da177e4c3f41 drivers/video/sstfb.c Linus Torvalds 2005-04-16  336  	/* clear screen */
^1da177e4c3f41 drivers/video/sstfb.c Linus Torvalds 2005-04-16 @337  	fb_memset(info->screen_base, 0, info->fix.smem_len);
^1da177e4c3f41 drivers/video/sstfb.c Linus Torvalds 2005-04-16  338  }
^1da177e4c3f41 drivers/video/sstfb.c Linus Torvalds 2005-04-16  339  

:::::: The code at line 337 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