linux-kernel - Re: [PATCH v5 7/7] arch/x86: Comment out efi_set_rtc

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Date:	Mon, 16 Jun 2014 12:43:26 +0100
From:	Stefano Stabellini <stefano.stabellini@...citrix.com>
To:	Daniel Kiper <daniel.kiper@...cle.com>
CC:	<linux-efi@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
	<x86@...nel.org>, <xen-devel@...ts.xenproject.org>,
	<andrew.cooper3@...rix.com>, <boris.ostrovsky@...cle.com>,
	<david.vrabel@...rix.com>, <eshelton@...ox.com>, <hpa@...or.com>,
	<ian.campbell@...rix.com>, <jbeulich@...e.com>, <jeremy@...p.org>,
	<konrad.wilk@...cle.com>, <matt.fleming@...el.com>,
	<mingo@...hat.com>, <mjg59@...f.ucam.org>,
	<stefano.stabellini@...citrix.com>, <tglx@...utronix.de>
Subject: Re: [PATCH v5 7/7] arch/x86: Comment out efi_set_rtc_mmss()

On Fri, 13 Jun 2014, Daniel Kiper wrote:
> efi_set_rtc_mmss() is never used to set RTC due to bugs found
> on many EFI platforms. It is set directly by mach_set_rtc_mmss().
> 
> Signed-off-by: Daniel Kiper <daniel.kiper@...cle.com>
> ---
>  arch/x86/platform/efi/efi.c |    6 ++++++
>  1 file changed, 6 insertions(+)
> 
> diff --git a/arch/x86/platform/efi/efi.c b/arch/x86/platform/efi/efi.c
> index deb4f05..bd3e080 100644
> --- a/arch/x86/platform/efi/efi.c
> +++ b/arch/x86/platform/efi/efi.c
> @@ -244,6 +244,11 @@ static efi_status_t __init phys_efi_set_virtual_address_map(
>  	return status;
>  }
>  
> +#if 0
> +/*
> + * efi_set_rtc_mmss() is never used to set RTC due to bugs found
> + * on many EFI platforms. It is set directly by mach_set_rtc_mmss().
> + */
>  int efi_set_rtc_mmss(const struct timespec *now)
>  {
>  	unsigned long nowtime = now->tv_sec;
> @@ -279,6 +284,7 @@ int efi_set_rtc_mmss(const struct timespec *now)
>  	}
>  	return 0;
>  }
> +#endif

"Commenting out" code like that is not a good idea: it leaves
dead-rotting functions in the middle of your source file.

If the function is not used, just go ahead and remove it. We can use git
to get it back.
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