linux-kernel - Re: [PATCH] ath10k: Add interrupt summary based CE processing

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Message-ID: <877dtlcvs1.fsf@codeaurora.org>
Date:   Wed, 26 Aug 2020 17:43:42 +0300
From:   Kalle Valo <kvalo@...eaurora.org>
To:     "Rakesh Pillai" <pillair@...eaurora.org>
Cc:     "'Peter Oh'" <peter.oh@...o.com>,
        'Brian Norris' <briannorris@...omium.org>,
        'linux-wireless' <linux-wireless@...r.kernel.org>,
        'Doug Anderson' <dianders@...omium.org>,
        'ath10k' <ath10k@...ts.infradead.org>,
        'LKML' <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] ath10k: Add interrupt summary based CE processing

(Guys, PLEASE edit your quotes. These long emails my use of patchwork
horrible.)

"Rakesh Pillai" <pillair@...eaurora.org> writes:

>> -----Original Message-----
>> From: Peter Oh <peter.oh@...o.com>
>> Sent: Tuesday, July 21, 2020 7:03 AM
>> To: Kalle Valo <kvalo@...eaurora.org>
>> Cc: Brian Norris <briannorris@...omium.org>; Doug Anderson
>> <dianders@...omium.org>; linux-wireless <linux-
>> wireless@...r.kernel.org>; Rakesh Pillai <pillair@...eaurora.org>; ath10k
>> <ath10k@...ts.infradead.org>; LKML <linux-kernel@...r.kernel.org>
>> Subject: Re: [PATCH] ath10k: Add interrupt summary based CE processing
>> 
>> I'll take my word back.
>> It's not this patch problem, but by others.
>> I have 2 extra patches before the 3 patches so my system looks like
>> 
>> backports from ath.git 5.6-rc1 + linux kernel 4.4 (similar to OpenWrt)
>> On top of the working system, I cherry-picked these 5.
>> 
>> #1.
>> ath10k: Avoid override CE5 configuration for QCA99X0 chipsets
>> ath.git commit 521fc37be3d879561ca5ab42d64719cf94116af0
>> #2.
>> ath10k: Fix NULL pointer dereference in AHB device probe
>> wireless-drivers.git commit 1cfd3426ef989b83fa6176490a38777057e57f6c
>> #3.
>> ath10k: Add interrupt summary based CE processing
>> https://patchwork.kernel.org/patch/11628299/
>
> This patch is applicable only for snoc target WCN3990, since there is
> a check for per_ce_irq. For PCI targets, per_ce_irq is false, and
> hence follows a different path.

This information should be in the commit log. But I have a patch in the
pending branch which removes per_ce_irq:

[v2,2/2] ath10k: Get rid of "per_ce_irq" hw param

https://patchwork.kernel.org/patch/11654621/

So how will multilple hardware support work then?

In theory I like the patch but there's no information in the patch if
this works or breaks other hardware, especially QCA9884 or QCA6174 PCI
devices. I really need some kind of assurance that this works with all
ath10k devices, not just WCN3990 which you are working on.

I have written about this in the wiki:

https://wireless.wiki.kernel.org/en/users/drivers/ath10k/submittingpatches#hardware_families

-- 
https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches