linux-kernel - Re: [PATCH] serial: pic32: Fix build warning when CONFIG

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Message-ID: <Z5da0aCupnXRvjr9@eleanor-wkdl>
Date: Mon, 27 Jan 2025 18:07:13 +0800
From: Yu-Chun Lin <eleanor15x@...il.com>
To: Greg KH <gregkh@...uxfoundation.org>
Cc: jirislaby@...nel.org, linux-kernel@...r.kernel.org,
	linux-serial@...r.kernel.org, jserv@...s.ncku.edu.tw,
	visitorckw@...il.com, kernel test robot <lkp@...el.com>
Subject: Re: [PATCH] serial: pic32: Fix build warning when CONFIG_OF is
 disabled

On Mon, Jan 27, 2025 at 10:12:47AM +0100, Greg KH wrote:
> > So I should remove of_match_ptr and add the CONFIG_OF as a dependency
> > for the configuration. Correct?
> 
> I don't know, but putting #ifdef in .c files is not the correct solution
> at all.

I fixed the build warning this way because I saw it was done the same way
in these three files:

drivers/tty/serial/samsung_tty.c 
drivers/tty/serial/mps2-uart.c
drivers/tty/serial/altera_jtaguart.c

Or maybe we can add __maybe_unused to avoid the warning?

Yu-Chun Lin