linux-kernel - Re: [PATCH v2] x86/cpu: fix prototype warning

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Message-ID: <alpine.DEB.2.21.1811081633160.1549@nanos.tec.linutronix.de>
Date:   Thu, 8 Nov 2018 16:35:45 +0100 (CET)
From:   Thomas Gleixner <tglx@...utronix.de>
To:     Borislav Petkov <bp@...en8.de>
cc:     Yi Wang <wang.yi59@....com.cn>, Michael Matz <matz@...e.de>,
        mingo@...hat.com, hpa@...or.com, x86@...nel.org,
        suravee.suthikulpanit@....com, puwen@...on.cn,
        davidwang@...oxin.com, linux-kernel@...r.kernel.org,
        zhong.weidong@....com.cn
Subject: Re: [PATCH v2] x86/cpu: fix prototype warning

Borislav,

On Thu, 8 Nov 2018, Borislav Petkov wrote:
> And frankly, I don't see why we should be fixing all those. So what if a
> global function does't have a previous prototype declaration?!

Global function declarations must have a prototype definition, really.

Otherwise you can change the function signature and all callers which use
the old unchanged prototype are hosed.

Thanks,

	tglx