netdev - Re: [patch] checkpatch: remove the ether_addr

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Date:	Fri, 03 Oct 2014 08:10:28 -0700
From:	Joe Perches <joe@...ches.com>
To:	Julia Lawall <julia.lawall@...6.fr>
Cc:	Dan Carpenter <dan.carpenter@...cle.com>,
	Andy Whitcroft <apw@...onical.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	netdev@...r.kernel.org, kernel-janitors@...r.kernel.org,
	gregkh@...uxfoundation.org
Subject: Re: [patch] checkpatch: remove the ether_addr_copy warning

On Fri, 2014-10-03 at 16:30 +0200, Julia Lawall wrote:
> On Fri, 3 Oct 2014, Joe Perches wrote:
> > On Fri, 2014-10-03 at 12:35 +0300, Dan Carpenter wrote:
> > > Most people sending checkpatch.pl fixes don't know how to verify the
> > > alignment.  This checkpatch warning just encourages newbies to try
> > > introduce bugs.  Patch submitters tell us that they just sed the code
> > > and it's the job for the maintainer to check that it's correct.
> >
> > I haven't seen many instances of bad patch submittals
> > on netdev.  Is this mostly an issue for staging?
> >
> > Maybe a downgrade to CHK requiring --strict is OK.
[]
> I think it is too bad to have a piece of knowledge that was apparent be
> made more obscure.  Why not just change the checkpatch warning to make
> more explicit that a lot of expertise is required to make the change?

Any wordsmithing appreciated.  Maybe something like:

from: Prefer ether_addr_copy() over memcpy() if the Ethernet addresses are __aligned(2)
to: Where both Ethernet addresses are guaranteed to be __aligned(2), prefer ether_addr_copy() over memcpy() 

That won't stop people from blindly following any message.



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