nios2: fix __wsum type degradation in csum_fold()

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csum_fold() shifts a bitwise __wsum type, which sparse reports as
"restricted __wsum degrades to integer". Sparse only checks the body of
a static inline once something instantiates it, so this went unnoticed
until a recent block layer change added the first csum_fold() caller to
a file built on this architecture.

Force cast to a __u32 for the shift, as the other architectures do.

Fixes: eea9507a69 ("nios2: Library functions")
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202609222053.5gjiJjtb-lkp@intel.com/
Signed-off-by: Keith Busch <kbusch@kernel.org>
Signed-off-by: Dinh Nguyen <dinguyen@kernel.org>

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Keith Busch 2026-09-22 08:34:16 -07:00 • committed by Dinh Nguyen

parent cee9395acd

commit b963f2345f

1 changed files with 1 additions and 1 deletions

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arch/nios2/include/asm/checksum.h

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