netdev - Re: [PATCH 1] net: fix and typo's

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Date:	Fri, 26 Oct 2007 11:25:58 -0700
From:	Stephen Hemminger <shemminger@...ux-foundation.org>
To:	Roel Kluin <12o3l@...cali.nl>
Cc:	netdev@...r.kernel.org
Subject: Re: [PATCH 1] net: fix and typo's

On Fri, 26 Oct 2007 19:07:10 +0200
Roel Kluin <12o3l@...cali.nl> wrote:

> A few patches with changes to net code. I have sent these to the lkml
> previously, but they were not yet merged. I am fairly new to kernel 
> programming, so it is possible that I make some mistakes. I'll explain my
> rationale, please nack if incorrect, an additional bit of explanation is
> appreciated even more.
> 
> The condition '!x & y,' does make little sense: the '!' has a higher
> priority than '&'. It behaves therefore like '!x && y'. In the case 
> bitanding flags, however, '!(x & y)' appears to be desired.
> 
> Warning: the change of '!x & y,' to '!(x & y)' may change behavior. if
> not desired, I propose changing this to '!x && y', to make it explicitly
> clear.
> 
> These '&' typo's can be spotted with:
> a="A-Za-z0-9_"
> git-grep "\![^$a()]*[$a]\+\([$a.]*\|->\)*\(\[[$a.]*\]\)\?[ \W]*&[^&]\+"
> 
> --
>         Fix priority mistakes similar to '!x & y'
>     
>         Signed-off-by: Roel Kluin <12o3l@...cali.nl>

I agree these look good, but maybe they should be broken into separate patches to
make bisection of any induced regressions easier.

Stephen Hemminger <shemminger@...ux-foundation.org>
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