linux-kernel - Re: [PATCH] ARM: imx: hide unused variable in #ifdef

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Date:   Mon, 23 Jan 2017 14:59:01 +0800
From:   Shawn Guo <shawnguo@...nel.org>
To:     Arnd Bergmann <arnd@...db.de>
Cc:     Thomas Gleixner <tglx@...utronix.de>,
        Sascha Hauer <kernel@...gutronix.de>,
        Fabio Estevam <fabio.estevam@....com>,
        Russell King <linux@...linux.org.uk>,
        Frank Li <Frank.Li@....com>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] ARM: imx: hide unused variable in #ifdef

On Tue, Jan 10, 2017 at 01:19:05PM +0100, Arnd Bergmann wrote:
> A bugfix added a new local variable that is only used inside of an #ifdef
> section, and unused if CONFIG_PERF_EVENTS is disabled:
> 
> arch/arm/mach-imx/mmdc.c:63:25: warning: 'cpuhp_mmdc_state' defined but not used [-Wunused-variable]
> 
> This moves the variable down inside that same ifdef.
> 
> Fixes: a051f220d6b9 ("ARM/imx/mmcd: Fix broken cpu hotplug handling")
> Signed-off-by: Arnd Bergmann <arnd@...db.de>

Applied, thanks.