Re: [PATCH] checkpatch.pl: Add warning for new __packed additions

[Heiko Carstens <heiko.carstens@de.ibm.com>]

On Mon, Feb 24, 2014 at 05:04:57PM -0500, Tom Rini wrote:
> On 02/24/2014 05:02 PM, Joe Perches wrote:
> > On Mon, 2014-02-24 at 16:52 -0500, Tom Rini wrote:
> >> I've been lead to
> >> believe that most cases now people should be using regmap instead, which
> >> just leaves the case of having to match on-disk formats or similar cases
> >> I believe as the things that must stay __packed.
> > 
> > __packed is also necessary for on-wire networking protocols.
> 
> Indeed, and there's probably a few other valid cases I'm also
> forgetting.  But the common case is hardware, where regmap is now preferred.

Except on s390 which doesn't use regmap. So this will give us a lot of false
positives with a warning message that isn't helpful at all.
It doesn't even tell us why it could be problematic and what would be the
better choice.
 
> I've got this modified to a CHK and only for non-file usage.  Anything
> else we want to talk about before I repost?

/me thinks this patch should be dropped. It would cause too many false
positives, since there are lot of valid use cases for __packed.