linux-kernel - drivers/edac/i10nm_base.c:149:19: sparse: sparse: cast removes address space '_

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Date:   Sat, 18 Jul 2020 12:13:11 +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/edac/i10nm_base.c:149:19: sparse: sparse: cast removes
 address space '__iomem' of expression

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   4ebf8d7649cd86c41c41bf48da4b7761da2d5009
commit: 670d0a4b10704667765f7d18f7592993d02783aa sparse: use identifiers to define address spaces
date:   4 weeks ago
config: x86_64-randconfig-s021-20200718 (attached as .config)
compiler: gcc-9 (Debian 9.3.0-14) 9.3.0
reproduce:
        # apt-get install sparse
        # sparse version: v0.6.2-49-g707c5017-dirty
        git checkout 670d0a4b10704667765f7d18f7592993d02783aa
        # save the attached .config to linux build tree
        make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=x86_64 

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/edac/i10nm_base.c:149:19: sparse: sparse: cast removes address space '__iomem' of expression
   drivers/edac/i10nm_base.c:170:31: sparse: sparse: cast removes address space '__iomem' of expression
   drivers/edac/i10nm_base.c:171:37: sparse: sparse: cast removes address space '__iomem' of expression

vim +/__iomem +149 drivers/edac/i10nm_base.c

d4dc89d069aab9 Qiuxu Zhuo 2019-01-30  144  
d4dc89d069aab9 Qiuxu Zhuo 2019-01-30  145  static bool i10nm_check_ecc(struct skx_imc *imc, int chan)
d4dc89d069aab9 Qiuxu Zhuo 2019-01-30  146  {
d4dc89d069aab9 Qiuxu Zhuo 2019-01-30  147  	u32 mcmtr;
d4dc89d069aab9 Qiuxu Zhuo 2019-01-30  148  
d4dc89d069aab9 Qiuxu Zhuo 2019-01-30 @149  	mcmtr = *(u32 *)(imc->mbase + 0x20ef8 + chan * 0x4000);
d4dc89d069aab9 Qiuxu Zhuo 2019-01-30  150  	edac_dbg(1, "ch%d mcmtr reg %x\n", chan, mcmtr);
d4dc89d069aab9 Qiuxu Zhuo 2019-01-30  151  
d4dc89d069aab9 Qiuxu Zhuo 2019-01-30  152  	return !!GET_BITFIELD(mcmtr, 2, 2);
d4dc89d069aab9 Qiuxu Zhuo 2019-01-30  153  }
d4dc89d069aab9 Qiuxu Zhuo 2019-01-30  154  

:::::: The code at line 149 was first introduced by commit
:::::: d4dc89d069aab9074e2493a4c2f3969a0a0b91c1 EDAC, i10nm: Add a driver for Intel 10nm server processors

:::::: TO: Qiuxu Zhuo <qiuxu.zhuo@...el.com>
:::::: CC: Borislav Petkov <bp@...e.de>

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

Download attachment ".config.gz" of type "application/gzip" (33610 bytes)