[PATCH v6 0/7] PCI: get DMA configuration from parent device

[Bjorn Helgaas]

On Mon, Feb 23, 2015 at 4:08 PM, Murali Karicheri <m-karicheri2 at ti.com> wrote:
> On 02/11/2015 11:58 AM, Murali Karicheri wrote:
>>
>> On 02/11/2015 11:54 AM, Murali Karicheri wrote:
>>>
>>> On 02/06/2015 01:36 PM, Murali Karicheri wrote:
>>>>
>>>> On 02/06/2015 12:53 PM, Bjorn Helgaas wrote:
>>>>>
>>>>> On Fri, Feb 6, 2015 at 9:28 AM, Murali Karicheri<m-karicheri2 at ti.com>
>>>>> wrote:
>>>>>>
>>>>>> On 02/06/2015 10:15 AM, Catalin Marinas wrote:
>>>>>>>
>>>>>>>
>>>>>>> On Thu, Feb 05, 2015 at 09:52:52PM +0000, Murali Karicheri wrote:
>>>>>>>>
>>>>>>>>
>>>>>>>> This patch add an important capability to PCI driver on Keystone. I
>>>>>>>> hope
>>>>>>>> to
>>>>>>>> have this merged to the upstream branch so that it is available for
>>>>>>>> v3.20.
>>>>>>>
>>>>>>>
>>>>>>> It's very late for 3.20 and the code hasn't been in linux-next at all
>>>>>>> (but it's not me who's merging this code), unless you can squeeze
>>>>>>> it in
>>>>>>> as a bug-fix.
>>>>>>
>>>>>>
>>>>>> This is in fact a bug fix as PCI on Keystone is broken without this.
>>>>>
>>>>>
>>>>> Oh, sorry, I didn't realize that this was so urgent. I guess I read
>>>>> "this adds an important capability" in the cover letter and concluded
>>>>> that it was new functionality.
>>>>
>>>> Bjorn,
>>>>
>>>> Thanks for responding.
>>>>
>>>> Let me give you some context on this without which my explanation won't
>>>> be complete. For using PCI driver on Keystone, I had submitted patches
>>>> related to machine and DTS to the arm mailing list to enable the driver
>>>> on Keystone. Subsequenty one of the patch from my series was Nack-ed and
>>>> I was asked to implememented in a different way and started this series.
>>>> You can refer to the discussion of this at
>>>>
>>>> http://www.gossamer-threads.com/lists/linux/kernel/2024591
>>>>
>>>> The PCI driver enablement on Keystone is still a working in progress and
>>>> I am trying to get it fully functional on the upstream. Another missing
>>>> piece is the SerDes phy driver patch. We have started working on the
>>>> other part (SerDes phy driver) already as the initial one was not
>>>> accepted. So it is fine if we are too late for the v3.20 merge window to
>>>> merge this series and this can be applied to the next branch for v3.21.
>>>>
>>>>>
>>>>> Anyway, if it's broken, presumably PCI on Keystone *did* work at one
>>>>> point. Can you identify the commit that broke it and requires these
>>>>> fixes, so we can figure out how far the fixes need to be backported?
>>>>>
>>>>
>>>> I am trying to get this driver enabled on Keystone by adding the missing
>>>> pieces as described above. So I guess we don't have to back port
>>>> anything here.
>>>>
>>>>> If I merge it, I would like to get into my for-linus branch and get a
>>>>> little time in -next before asking Linus to pull it. The merge window
>>>>> is a little wrinkle there -- I don't like to add new things to the mix
>>>>> during the window. But if it's an important fix we can still get it
>>>>> in before the final v3.20.
>>>>
>>>>
>>>> Please apply this to next branch for v3.21. It currently apply cleanly
>>>> to v3.19-rc7. If you want me rebase to another branch, let me know I can
>>>> apply and send you an updated patch.
>>>>
>>> Bjorn, Arnd,
>>>
>>> I am assuming, Bjorn is going to merge this to his next branch for
>>> v3.21. If not, it might have to be merged through the arm soc? There are
>>> a couple of Tested-by and Acked-by received after v7. Do you want me to
>>> post v8 with these updated in the patches?
>>
>> FYI.
>>
>> These are the updates.
>> Series was
>>
>> 1) Tested-by: Suravee Suthikulpanit <Suravee.Suthikulpanit at amd.com>
>> (on AMD Seattle platform w/ PCI Generic Host controller)
>> 2) Acked-by: Will Deacon <will.deacon at arm.com>
>> 3) Reviewed-by: Catalin Marinas <catalin.marinas at arm.com>
>>
> Bjorn,
>
> I haven't seen a reply from my above email. As soon as you are ready to pull
> this to v4.1 next (originally requested for v3.21 as per above email)branch,
> please let me know and I can send you an updated version rebased to your
> next branch and with the above acks.

My "next" and "for-linus" branches will be based on v4.0-rc1, so
that's the ideal base for patches.  I don't expect any significant
changes that would require a rebase, so unless something in your
patches themselves has changed since you last posted them, you don't
need to repost them just for a rebase.

Bjorn