linux-kernel - Re: [PATCH] hpet: drop stale link

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Message-ID: <20160203135349-mutt-send-email-mst@redhat.com>
Date:	Wed, 3 Feb 2016 13:54:32 +0200
From:	"Michael S. Tsirkin" <mst@...hat.com>
To:	Ingo Molnar <mingo@...nel.org>
Cc:	linux-kernel@...r.kernel.org, Thomas Gleixner <tglx@...utronix.de>,
	Clemens Ladisch <clemens@...isch.de>,
	Jonathan Corbet <corbet@....net>,
	Ingo Molnar <mingo@...hat.com>,
	"H. Peter Anvin" <hpa@...or.com>, x86@...nel.org,
	Arnd Bergmann <arnd@...db.de>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	linux-doc@...r.kernel.org
Subject: Re: [PATCH] hpet: drop stale link

On Wed, Feb 03, 2016 at 11:53:07AM +0100, Ingo Molnar wrote:
> 
> * Michael S. Tsirkin <mst@...hat.com> wrote:
> 
> > Looks like the HPET spec at intel.com got moved.
> > It isn't hard to find so drop the link, just mention
> > the revision assumed.
> > 
> > Suggested-by: Thomas Gleixner <tglx@...utronix.de>
> > Signed-off-by: Michael S. Tsirkin <mst@...hat.com>
> > ---
> >  drivers/char/hpet.c           | 2 +-
> >  Documentation/timers/hpet.txt | 2 +-
> >  arch/x86/Kconfig              | 2 +-
> >  3 files changed, 3 insertions(+), 3 deletions(-)
> > 
> > diff --git a/drivers/char/hpet.c b/drivers/char/hpet.c
> > index 240b6cf..86c5f4d 100644
> > --- a/drivers/char/hpet.c
> > +++ b/drivers/char/hpet.c
> > @@ -42,7 +42,7 @@
> >  /*
> >   * The High Precision Event Timer driver.
> >   * This driver is closely modelled after the rtc.c driver.
> > - * http://www.intel.com/hardwaredesign/hpetspec_1.pdf
> > + * http://www.intel.com/content/dam/www/public/us/en/documents/technical-specifications/software-developers-hpet-spec-1-0a.pdf
> >   */
> >  #define	HPET_USER_FREQ	(64)
> >  #define	HPET_DRIFT	(500)
> > diff --git a/Documentation/timers/hpet.txt b/Documentation/timers/hpet.txt
> > index 767392f..f24e978 100644
> > --- a/Documentation/timers/hpet.txt
> > +++ b/Documentation/timers/hpet.txt
> > @@ -3,7 +3,7 @@
> >  The High Precision Event Timer (HPET) hardware follows a specification
> >  by Intel and Microsoft which can be found at
> >  
> > -	http://www.intel.com/hardwaredesign/hpetspec_1.pdf
> > +http://www.intel.com/content/dam/www/public/us/en/documents/technical-specifications/software-developers-hpet-spec-1-0a.pdf
> >  
> >  Each HPET has one fixed-rate counter (at 10+ MHz, hence "High Precision")
> >  and up to 32 comparators.  Normally three or more comparators are provided,
> > diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
> > index 9af2e63..f32faba 100644
> > --- a/arch/x86/Kconfig
> > +++ b/arch/x86/Kconfig
> > @@ -778,7 +778,7 @@ config HPET_TIMER
> >  	  The HPET provides a stable time base on SMP
> >  	  systems, unlike the TSC, but it is more expensive to access,
> >  	  as it is off-chip.  You can find the HPET spec at
> > -	  <http://www.intel.com/hardwaredesign/hpetspec_1.pdf>.
> > +	  <http://www.intel.com/content/dam/www/public/us/en/documents/technical-specifications/software-developers-hpet-spec-1-0a.pdf>.
> >  
> >  	  You can safely choose Y here.  However, HPET will only be
> >  	  activated if the platform and the BIOS support this feature.
> 
> In fact we can also remove the link from this Kconfig entry, as it's highly 
> unlikely that a user doing kernel configuration would want to start reading a 
> spec.
> 
> Thanks,
> 
> 	Ingo

Hmm looks like the patch does not match the description.
Maybe I forgot to commit, or something.
Sorry - will repost.