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Re: [PATCH] cfg80211: Fix changing regulatory from userspace

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On Mon, Nov 28, 2011 at 1:45 PM, John W. Linville
<linville@xxxxxxxxxxxxx> wrote:
> On Wed, Nov 23, 2011 at 06:58:00AM -0800, Luis R. Rodriguez wrote:
>> On Wed, Nov 23, 2011 at 6:42 AM, John W. Linville
>> <linville@xxxxxxxxxxxxx> wrote:
>> > On Wed, Nov 23, 2011 at 09:34:56AM -0500, John W. Linville wrote:
>> >> On Wed, Nov 23, 2011 at 06:28:57AM -0800, Luis R. Rodriguez wrote:
>> >> > On Tue, Nov 22, 2011 at 6:30 PM, Timo Lindhorst <tlnd@xxxxxxxxx> wrote:
>> >> > > The commit de3584bd62d87b4c250129fbc46ca52c80330add -
>> >> > > "cfg80211: fix regulatory NULL dereference" prevents the regulatory
>> >> > > domain from being changed by user space. A wiphy is only present
>> >> > > if the request comes from driver or is set by country IE, thus
>> >> > > check only those cases.
>> >> > >
>> >> > > Signed-off-by: Timo Lindhorst <tlnd@xxxxxxxxx>
>> >> >
>> >> > Yup but at this point I'd prefer we revert the original patch instead
>> >> > given that the patch also had some other short comings. John is it too
>> >> > late?
>> >>
>> >> No, it isn't too late to revert it.  But can we have a new fix soon?
>> >
>> > Hmmm...actually, the original patch was sent in the batch yesterday.
>> > And it was Cc: stable.  It would be a lot less confusing to merge a
>> > correct fix on top (and Cc: stable on that too).  What is wrong with
>> > this one?
>>
>> This one is a correct fix to one of the issues present in the original
>> patch, the other issue is the original patch overlooks the fact that
>> last_request would be left with stale data. Let me post my fixes as
>> RFCs on top of Johannes's original patch to clarify. Unfortunately
>> this doesn't have much testing but I'll post for review at least.
>
> Looks like the RFCs got some comments.  Will there be a respin
> of those?  Or should I just apply this one for now?

John, I'll will send a respin after I dissect what Tomas mentioned. I
have one other patch added to my series also that Rajkumar Manoharan
<rmanohar@xxxxxxxxxxxxxxxx> sent to me that I will be rolling into my
series. If we are pressed my recommendation is to revert Johannes'
patch for now, but if you do, please let me know so I can amend my
patches to address that bit.

I'm working on this right now.

  Luis
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