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

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Message-ID: <20140618140821.GK24049@console-pimps.org>
Date:	Wed, 18 Jun 2014 15:08:21 +0100
From:	Matt Fleming <matt@...sole-pimps.org>
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, at 07:00:23PM, 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
>  
>  void efi_get_time(struct timespec *now)
>  {

As others have said in this thread - just delete this sucker.

I did make an attempt to get rid of all the time functions recently, but
chickened out at the last minute because we were nearing the merge
window,

  http://article.gmane.org/gmane.linux.kernel.janitors/30082

So yes, please go ahead and delete this function.

-- 
Matt Fleming, Intel Open Source Technology Center
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