From: Zhaoxiu Zeng <zhaoxiu.zeng@xxxxxxxxx> Use parity8(c) instead "hweight8(c) & 1" to improve readability, and improve performance on some CPUs that without popcount support. Signed-off-by: Zhaoxiu Zeng <zhaoxiu.zeng@xxxxxxxxx> --- drivers/tty/serial/max3100.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/tty/serial/max3100.c b/drivers/tty/serial/max3100.c index 5c4c280..a0cc84a 100644 --- a/drivers/tty/serial/max3100.c +++ b/drivers/tty/serial/max3100.c @@ -155,7 +155,7 @@ static int max3100_do_parity(struct max3100_port *s, u16 c) else c &= 0xff; - parity = parity ^ (hweight8(c) & 1); + parity ^= parity8(c); return parity; } -- 2.7.4 -- To unsubscribe from this list: send the line "unsubscribe linux-serial" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
