[kbuild-all] [linux-next:master 3267/4901] arch/powerpc/platforms/powermac/nvram.c:304:24: sparse: sparse: incorrect type in argument 1 (different address spaces)

Friday, 11 February 2022


tree:   https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head:   395a61741f7ea29e1f4a0d6e160197fe8e377572
commit: 4cfbda15d6578759c0157b18698e0c10ba598856 [3267/4901] fortify: Add Clang support
config: powerpc-allmodconfig
(https://download.01.org/0day-ci/archive/20220211/202202110552.DxobMxL7-lk...)
compiler: powerpc-linux-gcc (GCC) 11.2.0
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-dirty
        #
https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commi...
        git remote add linux-next
https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
        git fetch --no-tags linux-next master
        git checkout 4cfbda15d6578759c0157b18698e0c10ba598856
        # save the config file to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross C=1
CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=powerpc
SHELL=/bin/bash arch/powerpc/platforms/powermac/

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp(a)intel.com&gt;


sparse warnings: (new ones prefixed by >>)
...
> arch/powerpc/platforms/powermac/nvram.c:304:24: sparse: sparse:
incorrect type in argument 1 (different address spaces) @@     expected void const *const
p @@     got unsigned char [noderef] [usertype] __iomem *base @@   
arch/powerpc/platforms/powermac/nvram.c:304:24: sparse:     expected void const *const p
   arch/powerpc/platforms/powermac/nvram.c:304:24: sparse:     got unsigned char [noderef]
[usertype] __iomem *base
   arch/powerpc/platforms/powermac/nvram.c:338:20: sparse: sparse: incorrect type in
argument 1 (different address spaces) @@     expected void const *const p @@     got
unsigned char [noderef] [usertype] __iomem *base @@
   arch/powerpc/platforms/powermac/nvram.c:338:20: sparse:     expected void const *const
p
   arch/powerpc/platforms/powermac/nvram.c:338:20: sparse:     got unsigned char [noderef]
[usertype] __iomem *base
   arch/powerpc/platforms/powermac/nvram.c:384:24: sparse: sparse: incorrect type in
argument 1 (different address spaces) @@     expected void const *const p @@     got
unsigned char [noderef] [usertype] __iomem *base @@
   arch/powerpc/platforms/powermac/nvram.c:384:24: sparse:     expected void const *const
p
   arch/powerpc/platforms/powermac/nvram.c:384:24: sparse:     got unsigned char [noderef]
[usertype] __iomem *base
   arch/powerpc/platforms/powermac/nvram.c:429:20: sparse: sparse: incorrect type in
argument 1 (different address spaces) @@     expected void const *const p @@     got
unsigned char [noderef] [usertype] __iomem *base @@
   arch/powerpc/platforms/powermac/nvram.c:429:20: sparse:     expected void const *const
p
   arch/powerpc/platforms/powermac/nvram.c:429:20: sparse:     got unsigned char [noderef]
[usertype] __iomem *base
   arch/powerpc/platforms/powermac/nvram.c:480:35: sparse: sparse: cast removes address
space '__iomem' of expression
   arch/powerpc/platforms/powermac/nvram.c:526:35: sparse: sparse: cast removes address
space '__iomem' of expression
   arch/powerpc/platforms/powermac/nvram.c:527:35: sparse: sparse: cast removes address
space '__iomem' of expression
   arch/powerpc/platforms/powermac/nvram.c:534:44: sparse: sparse: dereference of noderef
expression

vim +304 arch/powerpc/platforms/powermac/nvram.c

14cf11af6cf608 arch/powerpc/platforms/powermac/pmac_nvram.c Paul Mackerras   2005-09-26 
279  
14cf11af6cf608 arch/powerpc/platforms/powermac/pmac_nvram.c Paul Mackerras   2005-09-26 
280  static int sm_erase_bank(int bank)
14cf11af6cf608 arch/powerpc/platforms/powermac/pmac_nvram.c Paul Mackerras   2005-09-26 
281  {
2d4b971287cbce arch/powerpc/platforms/powermac/nvram.c      Akinobu Mita     2012-01-27 
282  	int stat;
14cf11af6cf608 arch/powerpc/platforms/powermac/pmac_nvram.c Paul Mackerras   2005-09-26 
283  	unsigned long timeout;
14cf11af6cf608 arch/powerpc/platforms/powermac/pmac_nvram.c Paul Mackerras   2005-09-26 
284  
af308377e204e2 arch/powerpc/platforms/powermac/nvram.c      Stephen Rothwell 2006-03-23 
285  	u8 __iomem *base = (u8 __iomem *)nvram_data + core99_bank*NVRAM_SIZE;
14cf11af6cf608 arch/powerpc/platforms/powermac/pmac_nvram.c Paul Mackerras   2005-09-26 
286  
14cf11af6cf608 arch/powerpc/platforms/powermac/pmac_nvram.c Paul Mackerras   2005-09-26 
287         	DBG("nvram: Sharp/Micron Erasing bank %d...\n", bank);
14cf11af6cf608 arch/powerpc/platforms/powermac/pmac_nvram.c Paul Mackerras   2005-09-26 
288  
14cf11af6cf608 arch/powerpc/platforms/powermac/pmac_nvram.c Paul Mackerras   2005-09-26 
289  	out_8(base, SM_FLASH_CMD_ERASE_SETUP);
14cf11af6cf608 arch/powerpc/platforms/powermac/pmac_nvram.c Paul Mackerras   2005-09-26 
290  	out_8(base, SM_FLASH_CMD_ERASE_CONFIRM);
14cf11af6cf608 arch/powerpc/platforms/powermac/pmac_nvram.c Paul Mackerras   2005-09-26 
291  	timeout = 0;
14cf11af6cf608 arch/powerpc/platforms/powermac/pmac_nvram.c Paul Mackerras   2005-09-26 
292  	do {
14cf11af6cf608 arch/powerpc/platforms/powermac/pmac_nvram.c Paul Mackerras   2005-09-26 
293  		if (++timeout > 1000000) {
35499c0195e46f arch/powerpc/platforms/powermac/nvram.c      Paul Mackerras   2005-10-22 
294  			printk(KERN_ERR "nvram: Sharp/Micron flash erase timeout !\n");
14cf11af6cf608 arch/powerpc/platforms/powermac/pmac_nvram.c Paul Mackerras   2005-09-26 
295  			break;
14cf11af6cf608 arch/powerpc/platforms/powermac/pmac_nvram.c Paul Mackerras   2005-09-26 
296  		}
14cf11af6cf608 arch/powerpc/platforms/powermac/pmac_nvram.c Paul Mackerras   2005-09-26 
297  		out_8(base, SM_FLASH_CMD_READ_STATUS);
14cf11af6cf608 arch/powerpc/platforms/powermac/pmac_nvram.c Paul Mackerras   2005-09-26 
298  		stat = in_8(base);
14cf11af6cf608 arch/powerpc/platforms/powermac/pmac_nvram.c Paul Mackerras   2005-09-26 
299  	} while (!(stat & SM_FLASH_STATUS_DONE));
14cf11af6cf608 arch/powerpc/platforms/powermac/pmac_nvram.c Paul Mackerras   2005-09-26 
300  
14cf11af6cf608 arch/powerpc/platforms/powermac/pmac_nvram.c Paul Mackerras   2005-09-26 
301  	out_8(base, SM_FLASH_CMD_CLEAR_STATUS);
14cf11af6cf608 arch/powerpc/platforms/powermac/pmac_nvram.c Paul Mackerras   2005-09-26 
302  	out_8(base, SM_FLASH_CMD_RESET);
14cf11af6cf608 arch/powerpc/platforms/powermac/pmac_nvram.c Paul Mackerras   2005-09-26 
303  
2d4b971287cbce arch/powerpc/platforms/powermac/nvram.c      Akinobu Mita     2012-01-27
@304  	if (memchr_inv(base, 0xff, NVRAM_SIZE)) {
14cf11af6cf608 arch/powerpc/platforms/powermac/pmac_nvram.c Paul Mackerras   2005-09-26 
305  		printk(KERN_ERR "nvram: Sharp/Micron flash erase failed !\n");
14cf11af6cf608 arch/powerpc/platforms/powermac/pmac_nvram.c Paul Mackerras   2005-09-26 
306  		return -ENXIO;
14cf11af6cf608 arch/powerpc/platforms/powermac/pmac_nvram.c Paul Mackerras   2005-09-26 
307  	}
14cf11af6cf608 arch/powerpc/platforms/powermac/pmac_nvram.c Paul Mackerras   2005-09-26 
308  	return 0;
14cf11af6cf608 arch/powerpc/platforms/powermac/pmac_nvram.c Paul Mackerras   2005-09-26 
309  }
14cf11af6cf608 arch/powerpc/platforms/powermac/pmac_nvram.c Paul Mackerras   2005-09-26 
310  

:::::: The code at line 304 was first introduced by commit
:::::: 2d4b971287cbce16585acda4b76308faa8da0950 powerpc/pmac: Use string library in nvram
code

:::::: TO: Akinobu Mita <akinobu.mita(a)gmail.com&gt;
:::::: CC: Benjamin Herrenschmidt <benh(a)kernel.crashing.org&gt;

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

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[kbuild-all] [linux-next:master 3267/4901] arch/powerpc/platforms/powermac/nvram.c:304:24: sparse: sparse: incorrect type in argument 1 (different address spaces)