linux-kernel - Re: [PATCH v6 1/2] tty: serial: Cleanup the bit shift with macro

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Message-ID: <20231201071554.258607-2-crescentcy.hsieh@moxa.com>
Date: Tue, 16 Jan 2024 16:58:29 +0100
From: Christoph Niedermaier <cniedermaier@...electronics.com>
To: <crescentcy.hsieh@...a.com>
CC: <gregkh@...uxfoundation.org>, <jirislaby@...nel.org>,
	<linux-kernel@...r.kernel.org>, <linux-serial@...r.kernel.org>,
	<cniedermaier@...electronics.com>, <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH v6 1/2] tty: serial: Cleanup the bit shift with macro

In the old definition (1 << 3) wasn't used.

> -#define SER_RS485_RX_DURING_TX		(1 << 4)
> -#define SER_RS485_TERMINATE_BUS		(1 << 5)
> -#define SER_RS485_ADDRB			(1 << 6)
> -#define SER_RS485_ADDR_RECV		(1 << 7)
> -#define SER_RS485_ADDR_DEST		(1 << 8)
> +#define SER_RS485_ENABLED		_BITUL(0)
> +#define SER_RS485_RTS_ON_SEND		_BITUL(1)
> +#define SER_RS485_RTS_AFTER_SEND	_BITUL(2)
> +#define SER_RS485_RX_DURING_TX		_BITUL(3)

Isn't it a break if number 3 isn't skipped here as well?

Regards
Christoph