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Subject: Re: [PATCH 5.3] mt76: mt76x0e: don't use hw encryption for MT7630E
From:   Kalle Valo <kvalo@codeaurora.org>
In-Reply-To: <1565703400-10623-1-git-send-email-sgruszka@redhat.com>
References: <1565703400-10623-1-git-send-email-sgruszka@redhat.com>
To:     Stanislaw Gruszka <sgruszka@redhat.com>
Cc:     linux-wireless@vger.kernel.org, Felix Fietkau <nbd@nbd.name>,
        Lorenzo Bianconi <lorenzo.bianconi@redhat.com>,
        Ryder Lee <ryder.lee@mediatek.com>, Roy Luo <royluo@google.com>
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Message-Id: <20190903134917.449E5602CA@smtp.codeaurora.org>
Date:   Tue,  3 Sep 2019 13:49:17 +0000 (UTC)
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Stanislaw Gruszka <sgruszka@redhat.com> wrote:

> Since 41634aa8d6db ("mt76: only schedule txqs from the tx tasklet")
> I can observe firmware hangs on MT7630E on station mode: tx stop
> functioning after minor activity (rx keep working) and on module
> unload device fail to stop with messages:
> 
> [ 5446.141413] mt76x0e 0000:06:00.0: TX DMA did not stop
> [ 5449.176764] mt76x0e 0000:06:00.0: TX DMA did not stop
> 
> Loading module again results in failure to associate with AP.
> Only machine power off / power on cycle can make device work again.
> 
> It's unclear why commit 41634aa8d6db causes the problem, but it is
> related to HW encryption. Since issue is a firmware hang, that is super
> hard to debug, just disable HW encryption as fix for the issue.
> 
> Fixes: 41634aa8d6db ("mt76: only schedule txqs from the tx tasklet")
> Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>

Patch applied to wireless-drivers.git, thanks.

34b0e9b767bf mt76: mt76x0e: don't use hw encryption for MT7630E

-- 
https://patchwork.kernel.org/patch/11092283/

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