linux-kernel - drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.h:588:21: sparse: sparse: cast removes address space '_

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Date:   Mon, 17 May 2021 03:47:41 +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,
        Andrew Morton <akpm@...ux-foundation.org>,
        Linux Memory Management List <linux-mm@...ck.org>
Subject: drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.h:588:21:
 sparse: sparse: cast removes address space '__iomem' of expression

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   28183dbf54edba614a90ceb6a1e9464b27845309
commit: d991bb1c8da842a2a0b9dc83b1005e655783f861 include/linux/compiler-gcc.h: sparse can do constant folding of __builtin_bswap*()
date:   2 weeks ago
config: s390-randconfig-s032-20210517 (attached as .config)
compiler: s390-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: v0.6.3-341-g8af24329-dirty
        # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=d991bb1c8da842a2a0b9dc83b1005e655783f861
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout d991bb1c8da842a2a0b9dc83b1005e655783f861
        # 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__' W=1 ARCH=s390 

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/net/ethernet/marvell/octeontx2/nic/otx2_common.c:26:16: sparse: sparse: cast removes address space '__iomem' of expression
   drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.c:29:16: sparse: sparse: cast removes address space '__iomem' of expression
   drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.c:39:16: sparse: sparse: cast removes address space '__iomem' of expression
   drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.c:42:16: sparse: sparse: cast removes address space '__iomem' of expression
   drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.c:720:16: sparse: sparse: cast removes address space '__iomem' of expression
   drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.c: note: in included file (through arch/s390/include/asm/io.h, include/linux/io.h, include/linux/pci.h):
   include/asm-generic/io.h:193:15: sparse: sparse: cast to restricted __le64
   include/asm-generic/io.h:193:15: sparse: sparse: cast to restricted __le64
   include/asm-generic/io.h:193:15: sparse: sparse: cast to restricted __le64
   include/asm-generic/io.h:193:15: sparse: sparse: cast to restricted __le64
   include/asm-generic/io.h:193:15: sparse: sparse: cast to restricted __le64
   include/asm-generic/io.h:193:15: sparse: sparse: cast to restricted __le64
   include/asm-generic/io.h:193:15: sparse: sparse: cast to restricted __le64
   include/asm-generic/io.h:193:15: sparse: sparse: cast to restricted __le64
   include/asm-generic/io.h:193:15: sparse: sparse: cast to restricted __le64
   include/asm-generic/io.h:193:15: sparse: sparse: cast to restricted __le64
   include/asm-generic/io.h:236:22: sparse: sparse: incorrect type in argument 1 (different base types) @@     expected unsigned long long [usertype] val @@     got restricted __le64 [usertype] @@
   include/asm-generic/io.h:236:22: sparse:     expected unsigned long long [usertype] val
   include/asm-generic/io.h:236:22: sparse:     got restricted __le64 [usertype]
   include/asm-generic/io.h:236:22: sparse: sparse: incorrect type in argument 1 (different base types) @@     expected unsigned long long [usertype] val @@     got restricted __le64 [usertype] @@
   include/asm-generic/io.h:236:22: sparse:     expected unsigned long long [usertype] val
   include/asm-generic/io.h:236:22: sparse:     got restricted __le64 [usertype]
   include/asm-generic/io.h:236:22: sparse: sparse: incorrect type in argument 1 (different base types) @@     expected unsigned long long [usertype] val @@     got restricted __le64 [usertype] @@
   include/asm-generic/io.h:236:22: sparse:     expected unsigned long long [usertype] val
   include/asm-generic/io.h:236:22: sparse:     got restricted __le64 [usertype]
   drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.c: note: in included file:
>> drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.h:588:21: sparse: sparse: cast removes address space '__iomem' of expression
>> drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.h:588:21: sparse: sparse: cast removes address space '__iomem' of expression
   drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.c: note: in included file (through arch/s390/include/asm/io.h, include/linux/io.h, include/linux/pci.h):
   include/asm-generic/io.h:193:15: sparse: sparse: cast to restricted __le64

vim +/__iomem +588 drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.h

4c236d5dc8b862 Geetha sowjanya 2021-02-11  584  
caa2da34fd25a3 Sunil Goutham   2020-01-27  585  /* Alloc pointer from pool/aura */
caa2da34fd25a3 Sunil Goutham   2020-01-27  586  static inline u64 otx2_aura_allocptr(struct otx2_nic *pfvf, int aura)
caa2da34fd25a3 Sunil Goutham   2020-01-27  587  {
caa2da34fd25a3 Sunil Goutham   2020-01-27 @588  	u64 *ptr = (u64 *)otx2_get_regaddr(pfvf,
caa2da34fd25a3 Sunil Goutham   2020-01-27  589  			   NPA_LF_AURA_OP_ALLOCX(0));
caa2da34fd25a3 Sunil Goutham   2020-01-27  590  	u64 incr = (u64)aura | BIT_ULL(63);
caa2da34fd25a3 Sunil Goutham   2020-01-27  591  
caa2da34fd25a3 Sunil Goutham   2020-01-27  592  	return otx2_atomic64_add(incr, ptr);
caa2da34fd25a3 Sunil Goutham   2020-01-27  593  }
caa2da34fd25a3 Sunil Goutham   2020-01-27  594  

:::::: The code at line 588 was first introduced by commit
:::::: caa2da34fd25a37e9fd43343b6966fb9d730a6d5 octeontx2-pf: Initialize and config queues

:::::: TO: Sunil Goutham <sgoutham@...vell.com>
:::::: CC: David S. Miller <davem@...emloft.net>

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

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