reproduce (this is a W=1 build): git checkout v6.17-rc7 b4 shazam https://lore.kernel.org/r/20250926155612.2737443-1-adriana@arista.com # apt-get install sparse # sparse version: v0.6.4-66-g0196afe1 # save the config file mkdir build_dir && cp config build_dir/.config make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__ -fmax-errors=unlimited -fmax-warnings=unlimited' O=build_dir ARCH=i386 olddefconfig make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__ -fmax-errors=unlimited -fmax-warnings=unlimited' O=build_dir ARCH=i386 SHELL=/bin/bash drivers/firmware/