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Subjectarch/mips/n64/init.c:57:38: sparse: sparse: incorrect type in argument 2 (different address spaces)
tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 348949d9a4440abdab3b1dc99a9bb660e8c7da7c
commit: baec970aa5ba11099ad7a91773350c91fb2113f0 mips: Add N64 machine type
date: 9 months ago
config: mips-randconfig-s032-20211014 (attached as .config)
compiler: mips-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/torvalds/linux.git/commit/?id=baec970aa5ba11099ad7a91773350c91fb2113f0
git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git fetch --no-tags linus master
git checkout baec970aa5ba11099ad7a91773350c91fb2113f0
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=mips

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


sparse warnings: (new ones prefixed by >>)
command-line: note: in included file:
builtin:1:9: sparse: sparse: preprocessor token __ATOMIC_ACQUIRE redefined
builtin:0:0: sparse: this was the original definition
builtin:1:9: sparse: sparse: preprocessor token __ATOMIC_SEQ_CST redefined
builtin:0:0: sparse: this was the original definition
builtin:1:9: sparse: sparse: preprocessor token __ATOMIC_ACQ_REL redefined
builtin:0:0: sparse: this was the original definition
builtin:1:9: sparse: sparse: preprocessor token __ATOMIC_RELEASE redefined
builtin:0:0: sparse: this was the original definition
>> arch/mips/n64/init.c:57:38: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void volatile [noderef] __iomem *mem @@ got unsigned int [usertype] * @@
arch/mips/n64/init.c:57:38: sparse: expected void volatile [noderef] __iomem *mem
arch/mips/n64/init.c:57:38: sparse: got unsigned int [usertype] *

vim +57 arch/mips/n64/init.c

54
55 static void __init n64rdp_write_reg(const u8 reg, const u32 value)
56 {
> 57 __raw_writel(value, REG_BASE + reg);
58 }
59

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