linux-kernel - Re: [GIT PULL] time/ntp fix

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Date:	Sat, 21 Feb 2015 06:49:02 +0100
From:	Ingo Molnar <mingo@...nel.org>
To:	John Stultz <john.stultz@...aro.org>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [GIT PULL] time/ntp fix


* John Stultz <john.stultz@...aro.org> wrote:

> On Fri, Feb 20, 2015 at 2:26 PM, Linus Torvalds
> <torvalds@...ux-foundation.org> wrote:
> > On Fri, Feb 20, 2015 at 5:44 AM, Ingo Molnar <mingo@...nel.org> wrote:
> >>
> >> John Stultz (1):
> >>       ntp: Fixup adjtimex freq validation on 32-bit systems
> >
> > This is confusing. 32-bit?
> 
> Right, so the check that was added in a previous commit 
> is really only a concern for 64bit systems, but was 
> applied to both 32 and 64bit systems, which results in 
> breaking 32bit systems.
> 
> Thus the "fix" here is to make the check only apply to 
> 64bit systems.

Yeah, perhaps a better commit title would have been to 
write:

     time/ntp: Fix adjtimex freq validation code build warning on 32-bit systems

To make it clear that the problem fixed is a 32-bit 
warning, and that the fix for that is to only check on 
64-bit systems.

I agreed with your BITS_PER_LONG check when I reviewed your 
patch, people usually do an ugly #ifdef, I think this 
in line check form is nicer.

Thanks,

	Ingo
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