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SubjectRe: [PATCH] pch_uart: Add eg20t_port lock field, avoid recursive spinlocks


On 09/05/2012 05:18 PM, Greg Kroah-Hartman wrote:
> On Wed, Sep 05, 2012 at 05:14:48PM -0700, Greg Kroah-Hartman wrote:
>> On Wed, Sep 05, 2012 at 05:04:07PM -0700, Darren Hart wrote:
>>> The following patch has been included in linux-next
>>> (fe89def79c48e2149abdd1e816523e69a9067191) but has not yet landed in mainline
>>> nor been queued for stable so far as I can determine. This patch addresses a
>>> deadlock in mainline and is a prerequisite for an additional fix required by the
>>> PREEMPT_RT kernel. Can we get this pulled into 3.4.11 please?
>>
>> 3.4.11? It has to hit Linus's tree first.
>>
>>> Perhaps I am
>>> jumping the gun, but this patch was originally pulled on June 19, 2012.
>>
>> Remember, we missed a pull cycle for tty due to other problems, I
>> thought I picked all of the different pieces needed for 3.6, but I must
>> of missed this one.
>
> Nope, it made it, it is commit 2588aba002d14e938c2f56d299ecf3e7ce1302a5.

Doh, I pulled master and stable, but only checked stable. Sigh. My
apologies Greg.

>
> Now, do you want that patch in the -stable releases? If so, how far
> back? :)

Yes, back to 3.0 would be ideal. It needs mangling for 3.2 and back
though. I will send patches for 3.4, 3.2 and possibly 3.0 following the
stable_kernel_rules.txt procedure.

>
> Sorry for the mess,

Looks like it was my mess today :-)

--
Darren Hart
Intel Open Source Technology Center
Yocto Project - Technical Lead - Linux Kernel


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