linux-kernel - Re: [PATCH v2] x86/boot/KASLR: Fix unused variable warning

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Message-ID: <8736cne9or.fsf@nanos.tec.linutronix.de>
Date:   Fri, 10 Jan 2020 14:13:24 +0100
From:   Thomas Gleixner <tglx@...utronix.de>
To:     Zhenzhong Duan <zhenzhong.duan@...il.com>
Cc:     linux-kernel@...r.kernel.org, x86@...nel.org,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...e.de>,
        "H. Peter Anvin" <hpa@...or.com>,
        Chao Fan <fanc.fnst@...fujitsu.com>,
        Dave Hansen <dave.hansen@...ux.intel.com>,
        "Rafael J. Wysocki" <rafael.j.wysocki@...el.com>
Subject: Re: [PATCH v2] x86/boot/KASLR: Fix unused variable warning

Zhenzhong Duan <zhenzhong.duan@...il.com> writes:

> On Fri, Jan 10, 2020 at 5:00 AM Thomas Gleixner <tglx@...utronix.de> wrote:
>>
>> Zhenzhong Duan <zhenzhong.duan@...il.com> writes:
>>
>> > Local variable 'i' is referenced only when CONFIG_MEMORY_HOTREMOVE and
>> > CONFIG_ACPI are defined, but definition of variable 'i' is out of guard.
>> > If any of the two macros is undefined, below warning triggers during
>> > build, fix it by moving 'i' in the guard.
>> >
>> > arch/x86/boot/compressed/kaslr.c:698:6: warning: unused variable ‘i’ [-Wunused-variable]
>> >
>> > Also use true/false instead of 1/0 for boolean return.
>>
>> No. This is not the scope of the unused variable issue. This want's to
>> be a separate patch.
>
> I'm trying to combine trivial changes into one, so you maintainers
> don't mind to pick two trivial patches? :)

See Documentation/process/submitting-patches.rst:

  Solve only one problem per patch.

Thanks,

        tglx