linux-kernel - Re: [PATCH v2 2/2] checkpatch: suggest using eth_zero_addr() and eth_broadcast

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Message-ID: <1429655247.31675.20.camel@perches.com>
Date:	Tue, 21 Apr 2015 15:27:27 -0700
From:	Joe Perches <joe@...ches.com>
To:	Mateusz Kulikowski <mateusz.kulikowski@...il.com>
Cc:	apw@...onical.com, davem@...emloft.net, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 2/2] checkpatch: suggest using eth_zero_addr() and
 eth_broadcast_addr()

On Tue, 2015-04-21 at 23:44 +0200, Mateusz Kulikowski wrote:
> On 21.04.2015 23:22, Joe Perches wrote:
> > On Tue, 2015-04-21 at 22:57 +0200, Mateusz Kulikowski wrote:
> (...)
> >>
> >> Perhaps it would be smarter to use (for both patches) $stat instead.
> >> This applies also to existing checks (like PREFER_ETHER_ADDR_COPY) 
> >> so we can catch calls formatted like
> >>
> >> memset(very.long.structure->something.something_different42,
> >>        0xFF, ETH_ALEN);
> > 
> > Yes, likely that's true.
> > 
> > checkpatch couldn't --fix it easily unless it's on a
> > single line though.
> 
> True, True; If you prefer $line and ability to --fix - I'll use that in v3

I suppose you could do both $line and $stat
and the fix would only work when it's on a
single line.

Perhaps something like this would work:

	if ($line =~ /whatever/ ||
	    (defined($stat) && $stat =~ /whatever/)) {
		if (WARN(...) &&
		    $fix) {
			fixed[$fixlinenr] =~ s/whatever/appropriate/;
		}
	}

No worries about getting 'round the the list.
It'll get got eventually.

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