Re: [PATCH 07/17] serial: max3100: Replace open-coded parity calculation with parity8()

From: Jiri Slaby
Date: Mon Feb 24 2025 - 02:26:26 EST


On 23. 02. 25, 17:42, Kuan-Wei Chiu wrote:
--- a/drivers/tty/serial/max3100.c
+++ b/drivers/tty/serial/max3100.c
@@ -16,6 +16,7 @@
/* 4 MAX3100s should be enough for everyone */
#define MAX_MAX3100 4
+#include <linux/bitops.h>
#include <linux/container_of.h>
#include <linux/delay.h>
#include <linux/device.h>
@@ -133,7 +134,7 @@ static int max3100_do_parity(struct max3100_port *s, u16 c)
else
c &= 0xff;
- parity = parity ^ (hweight8(c) & 1);
+ parity = parity ^ (parity8(c));
return parity;

So all this should be simply:
return parity ^ parity8(c);

}

thanks,
--
js
suse labs