diff options
| author | Guodong Xu <guodong@riscstar.com> | 2026-05-05 09:53:34 -0400 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2026-05-05 11:01:22 +0900 |
| commit | 00cef7eb08c8b9af0978f667c77c6a30b71b7e22 (patch) | |
| tree | dc23e5f0d7a9dd4fc7d7fb112048b55ab49999b0 /include/linux | |
| parent | e4358093816df69b574a5632051801a881663d12 (diff) | |
spi: spacemit: add u64 cast to NSEC_PER_SEC to avoid 32-bit overflow
NSEC_PER_SEC expands to the long constant 1000000000L, so NSEC_PER_SEC *
BITS_PER_BYTE (8 * 10^9) overflows on 32-bit-long architectures
before the result reaches the u64 nsec_per_word.
Promote the multiplication to u64 by casting the first operand, which is
NSEC_PER_SEC.
Fixes: efcd8b9d1111 ("spi: spacemit: introduce SpacemiT K1 SPI controller driver")
Suggested-by: Alex Elder <elder@riscstar.com>
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202605050437.RS6mmV2b-lkp@intel.com/
Closes: https://lore.kernel.org/oe-kbuild-all/202605050317.Tf9j487w-lkp@intel.com/
Signed-off-by: Guodong Xu <guodong@riscstar.com>
Link: https://patch.msgid.link/20260505-spi-spacemit-k1-fix-overflow-v1-1-77564c2e4e86@riscstar.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'include/linux')
0 files changed, 0 insertions, 0 deletions