linux-kernel - drivers/video/fbdev/chipsfb.c:334:9: sparse: sparse: incorrect type in argument 1 (different address spaces)

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Date:   Mon, 17 Aug 2020 06:40:51 +0800
From:   kernel test robot <lkp@...el.com>
To:     Luc Van Oostenryck <luc.vanoostenryck@...il.com>
Cc:     kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org
Subject: drivers/video/fbdev/chipsfb.c:334:9: 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:   9123e3a74ec7b934a4a099e98af6a61c2f80bbf5
commit: 670d0a4b10704667765f7d18f7592993d02783aa sparse: use identifiers to define address spaces
date:   8 weeks ago
config: powerpc64-randconfig-s032-20200817 (attached as .config)
compiler: powerpc-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: v0.6.2-180-g49f7e13a-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=powerpc64 

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


sparse warnings: (new ones prefixed by >>)

>> drivers/video/fbdev/chipsfb.c:334:9: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected void *s @@     got char [noderef] __iomem *screen_base @@
   drivers/video/fbdev/chipsfb.c:334:9: sparse:     expected void *s
>> drivers/video/fbdev/chipsfb.c:334:9: sparse:     got char [noderef] __iomem *screen_base
--
>> drivers/soc/fsl/qe/usb.c:46:9: sparse: sparse: incorrect type in argument 1 (different base types) @@     expected unsigned int volatile [noderef] [usertype] __iomem *addr @@     got restricted __be32 [noderef] __iomem * @@
>> drivers/soc/fsl/qe/usb.c:46:9: sparse:     expected unsigned int volatile [noderef] [usertype] __iomem *addr
>> drivers/soc/fsl/qe/usb.c:46:9: sparse:     got restricted __be32 [noderef] __iomem *
>> drivers/soc/fsl/qe/usb.c:46:9: sparse: sparse: incorrect type in argument 1 (different base types) @@     expected unsigned int const volatile [noderef] [usertype] __iomem *addr @@     got restricted __be32 [noderef] __iomem * @@
>> drivers/soc/fsl/qe/usb.c:46:9: sparse:     expected unsigned int const volatile [noderef] [usertype] __iomem *addr
>> drivers/soc/fsl/qe/usb.c:46:9: sparse:     got restricted __be32 [noderef] __iomem *

# https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=670d0a4b10704667765f7d18f7592993d02783aa
git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git fetch --no-tags linus master
git checkout 670d0a4b10704667765f7d18f7592993d02783aa
vim +334 drivers/video/fbdev/chipsfb.c

^1da177e4c3f41 drivers/video/chipsfb.c Linus Torvalds         2005-04-16  331  
48c68c4f1b5424 drivers/video/chipsfb.c Greg Kroah-Hartman     2012-12-21  332  static void init_chips(struct fb_info *p, unsigned long addr)
^1da177e4c3f41 drivers/video/chipsfb.c Linus Torvalds         2005-04-16  333  {
8c8709334cec80 drivers/video/chipsfb.c Benjamin Herrenschmidt 2005-06-27 @334  	memset(p->screen_base, 0, 0x100000);
8c8709334cec80 drivers/video/chipsfb.c Benjamin Herrenschmidt 2005-06-27  335  
^1da177e4c3f41 drivers/video/chipsfb.c Linus Torvalds         2005-04-16  336  	p->fix = chipsfb_fix;
^1da177e4c3f41 drivers/video/chipsfb.c Linus Torvalds         2005-04-16  337  	p->fix.smem_start = addr;
^1da177e4c3f41 drivers/video/chipsfb.c Linus Torvalds         2005-04-16  338  
^1da177e4c3f41 drivers/video/chipsfb.c Linus Torvalds         2005-04-16  339  	p->var = chipsfb_var;
^1da177e4c3f41 drivers/video/chipsfb.c Linus Torvalds         2005-04-16  340  
^1da177e4c3f41 drivers/video/chipsfb.c Linus Torvalds         2005-04-16  341  	p->fbops = &chipsfb_ops;
^1da177e4c3f41 drivers/video/chipsfb.c Linus Torvalds         2005-04-16  342  	p->flags = FBINFO_DEFAULT;
^1da177e4c3f41 drivers/video/chipsfb.c Linus Torvalds         2005-04-16  343  
^1da177e4c3f41 drivers/video/chipsfb.c Linus Torvalds         2005-04-16  344  	fb_alloc_cmap(&p->cmap, 256, 0);
^1da177e4c3f41 drivers/video/chipsfb.c Linus Torvalds         2005-04-16  345  
^1da177e4c3f41 drivers/video/chipsfb.c Linus Torvalds         2005-04-16  346  	chips_hw_init();
^1da177e4c3f41 drivers/video/chipsfb.c Linus Torvalds         2005-04-16  347  }
^1da177e4c3f41 drivers/video/chipsfb.c Linus Torvalds         2005-04-16  348  

:::::: The code at line 334 was first introduced by commit
:::::: 8c8709334cec803368a432a33e0f2e116d48fe07 [PATCH] ppc32: Remove CONFIG_PMAC_PBOOK

:::::: TO: Benjamin Herrenschmidt <benh@...nel.crashing.org>
:::::: CC: Linus Torvalds <torvalds@...970.osdl.org>

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

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