linux-kernel - Re: [PATCH] serial: sunzilog: Mark sunzilog_putchar() __maybe

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Date:   Tue, 26 Oct 2021 13:32:04 +0100 (BST)
From:   David Miller <davem@...emloft.net>
To:     geert@...ux-m68k.org
Cc:     gregkh@...uxfoundation.org, jirislaby@...nel.org, arnd@...db.de,
        sparclinux@...r.kernel.org, linux-serial@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] serial: sunzilog: Mark sunzilog_putchar()
 __maybe_unused

From: Geert Uytterhoeven <geert@...ux-m68k.org>
Date: Tue, 26 Oct 2021 10:04:26 +0200

> If CONSOLE_POLL=n, CONFIG_SERIAL_SUNZILOG_CONSOLE=n, and CONFIG_SERIO=m:
> 
>     drivers/tty/serial/sunzilog.c:1128:13: error: ‘sunzilog_putchar’ defined but not used [-Werror=unused-function]
>      1128 | static void sunzilog_putchar(struct uart_port *port, int ch)
> 	  |             ^~~~~~~~~~~~~~~~
> 
> Fix this by marking sunzilog_putchar() __maybe_unused.
> 
> Signed-off-by: Geert Uytterhoeven <geert@...ux-m68k.org>

Acked-by: David S. Miller <davem@...emloft.net>