From: kernel test robot <lkp@intel.com>
To: Daniel Zahka <daniel.zahka@gmail.com>
Cc: oe-kbuild-all@lists.linux.dev, Paolo Abeni <pabeni@redhat.com>
Subject: [linux-next:master 10013/15343] include/linux/io-64-nonatomic-lo-hi.h:21:9: sparse: sparse: cast truncates bits from constant value (1f000000000000 becomes 0)
Date: Fri, 09 Oct 2026 10:52:12 +0200 [thread overview]
Message-ID: <202610091003.EgYObgiu-lkp@intel.com> (raw)
tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head: aac26bee2287c88af5be5a5ff96d783b19a28790
commit: 3d4e4ad43aa455353067cf004d0618009ac39205 [10013/15343] eth: mpnic: implement Tx queue allocation and cleanup
config: csky-randconfig-r2300-20261009 (https://download.01.org/0day-ci/archive/20261009/202610091003.EgYObgiu-lkp@intel.com/config)
compiler: csky-linux-gcc (GCC) 11.5.0
sparse: v0.6.5-rc1
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20261009/202610091003.EgYObgiu-lkp@intel.com/reproduce)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202610091003.EgYObgiu-lkp@intel.com/
sparse warnings: (new ones prefixed by >>)
drivers/net/ethernet/meta/mpnic/mpnic_txrx.c: note: in included file (through drivers/net/ethernet/meta/mpnic/mpnic.h):
>> include/linux/io-64-nonatomic-lo-hi.h:21:9: sparse: sparse: cast truncates bits from constant value (1f000000000000 becomes 0)
include/linux/io-64-nonatomic-lo-hi.h:21:9: sparse: sparse: cast truncates bits from constant value (17000000000000 becomes 0)
include/linux/io-64-nonatomic-lo-hi.h:21:9: sparse: sparse: cast truncates bits from constant value (37000000000000 becomes 0)
vim +21 include/linux/io-64-nonatomic-lo-hi.h
797a796a13df6b include/asm-generic/io-64-nonatomic-lo-hi.h Hitoshi Mitake 2012-02-07 18
3a044178cccfeb include/asm-generic/io-64-nonatomic-lo-hi.h Jason Baron 2014-07-04 19 static inline void lo_hi_writeq(__u64 val, volatile void __iomem *addr)
797a796a13df6b include/asm-generic/io-64-nonatomic-lo-hi.h Hitoshi Mitake 2012-02-07 20 {
797a796a13df6b include/asm-generic/io-64-nonatomic-lo-hi.h Hitoshi Mitake 2012-02-07 @21 writel(val, addr);
797a796a13df6b include/asm-generic/io-64-nonatomic-lo-hi.h Hitoshi Mitake 2012-02-07 22 writel(val >> 32, addr + 4);
797a796a13df6b include/asm-generic/io-64-nonatomic-lo-hi.h Hitoshi Mitake 2012-02-07 23 }
3a044178cccfeb include/asm-generic/io-64-nonatomic-lo-hi.h Jason Baron 2014-07-04 24
:::::: The code at line 21 was first introduced by commit
:::::: 797a796a13df6b84a4791e57306737059b5b2384 asm-generic: architecture independent readq/writeq for 32bit environment
:::::: TO: Hitoshi Mitake <mitake@dcl.info.waseda.ac.jp>
:::::: CC: Linus Torvalds <torvalds@linux-foundation.org>
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
reply other threads:[~2026-10-09 8:52 UTC|newest]
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