I'm curious: a duplicated modulo operation can't possibly make any difference, can it? diff -u -p ./arch/powerpc/platforms/powermac/nvram.c /tmp/nothing/arch/powerpc/platforms/powermac/nvram.c --- ./arch/powerpc/platforms/powermac/nvram.c 2011-03-31 09:52:41.674292401 +0200 +++ /tmp/nothing/arch/powerpc/platforms/powermac/nvram.c @@ -246,7 +246,6 @@ static u32 core99_calc_adler(u8 *buffer) high = 0; for (cnt=0; cnt<(NVRAM_SIZE-CORE99_ADLER_START); cnt++) { if ((cnt % 5000) == 0) { - high %= 65521UL; high %= 65521UL; } low += buffer[cnt]; Best regards, Nicolas Kaiser -- To unsubscribe from this list: send the line "unsubscribe linux-c-programming" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html