linux-kernel - Re: [PATCH 1/3] rtc-efi: register rtc-efi device when EFI enabled

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Message-ID: <1356742803.6113.245.camel@linux-s257.site>
Date:	Sat, 29 Dec 2012 09:00:03 +0800
From:	joeyli <jlee@...e.com>
To:	Matthew Garrett <matthew.garrett@...ula.com>
Cc:	"matt.fleming@...el.com" <matt.fleming@...el.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-efi@...r.kernel.org" <linux-efi@...r.kernel.org>,
	"H. Peter Anvin" <hpa@...or.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>, Jan Beulich <JBeulich@...e.com>
Subject: Re: [PATCH 1/3] rtc-efi: register rtc-efi device when EFI enabled

於 五，2012-12-28 於 17:43 +0000，Matthew Garrett 提到：
> On Sat, 2012-12-29 at 00:26 +0800, Lee, Chun-Yi wrote:
> > UEFI time services, GetTime(), SetTime(), GetWakeupTime(), SetWakeupTime() are also
> > supported by other non-IA64 architecutre with UEFI BIOS, e.g. x86.
> > 
> > This patch changed RTC_DRV_EFI configuration to depend on EFI but not just IA64. It
> > checks efi_enabled flag and efi-rtc driver should enabled.
> 
> In theory, certainly - but do we still have machines that explode if the
> get_time call is made? We may also want to think about disabling the
> legacy access to the RTC if the EFI calls are present.

The legacy get_time access on my test machine is work fine, not thing
explode. :-)
Just we have a function want to expose the timezone information to
userspace and also store it.


Thanks a lot!
Joey Lee


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