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

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Message-ID: <b09e2b91-fae6-467c-8bbb-cb14cf0da8b4@kernel.org>
Date: Mon, 24 Feb 2025 08:25:46 +0100
From: Jiri Slaby <jirislaby@...nel.org>
To: Kuan-Wei Chiu <visitorckw@...il.com>, tglx@...utronix.de,
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 Yu-Chun Lin <eleanor15x@...il.com>
Subject: Re: [PATCH 07/17] serial: max3100: Replace open-coded parity
 calculation with parity8()

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