linux-kernel - Re: [PATCH] net: wwan: t7xx: Add AP CLDMA

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Date:   Mon, 26 Jun 2023 13:13:44 -0700
From:   Jakub Kicinski <kuba@...nel.org>
To:     Jose Ignacio Tornos Martinez <jtornosm@...hat.com>
Cc:     loic.poulain@...aro.org, ryazanov.s.a@...il.com,
        johannes@...solutions.net, davem@...emloft.net,
        edumazet@...gle.com, pabeni@...hat.com, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, jinjian.song@...ocom.com
Subject: Re: [PATCH] net: wwan: t7xx: Add AP CLDMA

On Mon, 26 Jun 2023 10:20:37 +0200 Jose Ignacio Tornos Martinez wrote:
> At this moment with the current status, t7xx is not functional due to
> problems like this after connection, if there is no activity:
> [   57.370534] mtk_t7xx 0000:72:00.0: [PM] SAP suspend error: -110
> [   57.370581] mtk_t7xx 0000:72:00.0: can't suspend
>     (t7xx_pci_pm_runtime_suspend [mtk_t7xx] returned -110)
> because after this, the traffic no longer works.
> 
> The complete series 'net: wwan: t7xx: fw flashing & coredump support'
> was reverted because of issues with the pci implementation.
> In order to have at least the modem working, it would be enough if just
> the first commit of the series is re-applied:
> d20ef656f994 net: wwan: t7xx: Add AP CLDMA).
> With that, the Application Processor would be controlled, correctly
> suspended and the commented problems would be fixed (I am testing here
> like this with no related issue).
> 
> This commit is independent of the others in the series and not related to 
> the commented pci implementation for the new features: fw flashing and
> coredump collection.
> 
> Original text from the commit that would be re-applied:
> 
>     d20ef656f994 net: wwan: t7xx: Add AP CLDMA
>     Author: Haijun Liu <haijun.liu@...iatek.com>
>     Date:   Tue Aug 16 09:53:28 2022 +0530
> 
>     The t7xx device contains two Cross Layer DMA (CLDMA) interfaces to
>     communicate with AP and Modem processors respectively. So far only
>     MD-CLDMA was being used, this patch enables AP-CLDMA.
> 
>     Rename small Application Processor (sAP) to AP.

A bit of a bad timing, the merge window for 6.5 has just opened 
and we're busy settling the bugs in linux-next right now. So you
will need to repost this change in 2 weeks...


## Form letter - net-next-closed

The merge window for v6.5 has begun and therefore net-next is closed
for new drivers, features, code refactoring and optimizations.
We are currently accepting bug fixes only.

Please repost when net-next reopens after July 10th.

RFC patches sent for review only are obviously welcome at any time.

See: https://www.kernel.org/doc/html/next/process/maintainer-netdev.html#development-cycle
-- 
pw-bot: defer