Re: Parser stable fix question for CFG80211_INTERNAL_REGDB

["John W. Linville" <linville-2XuSBdqkA4R54TAoqtyWWQ@public.gmane.org>]

On Mon, Jun 30, 2014 at 12:19:08PM -0700, Luis R. Rodriguez wrote:
> On Mon, Jun 30, 2014 at 11:55 AM, Luis R. Rodriguez
> <mcgrof-3uybbJdB1yH774rrrx3eTA@public.gmane.org> wrote:
> > For the current kernel we
> > could intake the patch below, and I can port the change to no use
> > dfs_cac, that would enable older kernels to use new and older versions
> > of the ASCII database file.
> 
> Personally I actually rather avoid us accept a patch upstream for a
> userspace change. The problem here is that we failed to realize the
> impact of CFG80211_INTERNAL_REGDB at build time with a userspace tool,
> in this case the db.txt file wireless-regdb provides and its format.
> 
> If we wanted to avoid a stable patch we could require a match between
> wireless-regdb input file used for a kernel when
> CFG80211_INTERNAL_REGDB is used at build time. That would require
> different ASCII files on wireless-regdb or having the users of
> CFG80211_INTERNAL_REGDB do the conversion themselves. Upstream would
> just follow the wireless-regdb latest format. This then would just
> require upstream a Kconfig update to clarify the requirements.
> 
> This seems like a rather lazy option but also one that would be rather
> more fair and honest for upstream, we could deal with a proper fix by
> reconsidering the implementation of CFG80211_INTERNAL_REGDB completely
> for future kernels.

I'm shocked that anyone actually uses CFG80211_INTERNAL_REGDB...

Anyway, I don't see the big deal.  We should keep
CFG80211_INTERNAL_REGDB (whether implemented in awk or C) up-to-date
with current kernels.  Anyone wanting to use an old kernel with an
updated wireless-regdb file is responsible for ensuring compatibility.
If they can't do that, then they should seek support from a vendor.
How is this any different from any other kernel support issue?

John
-- 
John W. Linville		Someday the world will need a hero, and you
linville-2XuSBdqkA4R54TAoqtyWWQ@public.gmane.org			might be all we have.  Be ready.
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