Re: [PATCH 1/1] firmware/dmc/icl: load v1.07 on icelake.

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On Wed, 05 Sep 2018, Rodrigo Vivi <rodrigo.vivi@xxxxxxxxx> wrote:
> On Wed, Sep 05, 2018 at 12:07:43PM +0300, Joonas Lahtinen wrote:
>> Was not the decision that we only gate the MODULE_FIRMWARE line until
>> the firmware is in linux-firmware.git?
>> 
>> So it should be no harm to support loading firmwares that are available
>> from drm-firmware.git as long as we don't add the MODULE_FIRMWARE which
>> would trigger false positives for distro packagers.
>
> As far as I can remember we had agreed on changing this and adding
> MODULE_FIRMWARE from the beginning.
>
> 1. the process gets complex
> 2. we forgot many times to add it afterwards
> 3. module_firmware changes nothing... only the fact that initrd generation
>    wont complain if firmware is not there yet.
> 4. The old issue was that patches were merged without the pull request
>    being sent... We fixed that by only accepting patches after pull request
>    is sent.
> 5. By the time that all lands to distros linux-firmware.git will have
> the firmware because of 4.
> 6. We have now drm-firmware to mirror what official linux-firmware.git will
> be in few weeks from now.
>
> So I don't see a reason anymore why to keep with complicated process with
> split MODULE_FIRMWARE.

I've changed my mind, I agree with *not* splitting MODULE_FIRMWARE
changes to another patch anymore.

However, with that I think we need to redefine when we can add
request_firmware and MODULE_FIRMWARE for a specific firmware
blob. Here's my proposal.

- Before merging a patch adding or changing a firmware blob in dinq,
  said blob must be publicly available at a known location, and no known
  blockers for linux-firmware.git merge may exist.

- We take care to get the blob to linux-firmware.git before the changes
  hit Linus' -rc1 after the merge window. With our -rc5 feature
  deadline, this should give us at least 4-5 weeks to get the blob
  merged to linux-firmware.git.

- It follows that linux-next and drm-tip may contain MODULE_FIRMWARE for
  blobs that don't exist in linux-firmware.git.

BR,
Jani.

-- 
Jani Nikula, Intel Open Source Graphics Center
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