linux-kernel - Re: [PATCH] ARM: sa1100: make sa1100_register_uart

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Date:	Thu, 25 Feb 2016 14:18:44 +0100
From:	Linus Walleij <linus.walleij@...aro.org>
To:	Arnd Bergmann <arnd@...db.de>
Cc:	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	Dmitry Eremin-Solenikov <dbaryshkov@...il.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] ARM: sa1100: make sa1100_register_uart_fns a function

On Tue, Feb 23, 2016 at 3:34 PM, Arnd Bergmann <arnd@...db.de> wrote:

> Calling sa1100_register_uart_fns() leaves the port structure
> unused when CONFIG_SERIAL_SA1100 is disabled, and we get a
> compiler warning about that:
>
> arch/arm/mach-sa1100/badge4.c:317:31: warning: 'badge4_port_fns' defined but not used [-Wunused-variable]
>  static struct sa1100_port_fns badge4_port_fns __initdata = {
>
> This turns the two empty macros into empty inline functions,
> which has the same effect, but lets the compiler know that the
> variables are intentionally unused.
>
> Signed-off-by: Arnd Bergmann <arnd@...db.de>

Acked-by: Linus Walleij <linus.walleij@...aro.org>

>  include/linux/platform_data/sa11x0-serial.h | 8 ++++++--

It looks like you should send this to Greg?

Yours,
Linus Walleij