netdev - Re: [PATCH] Revert "mt76: mt7921: enable aspm by default"

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Date:   Wed, 01 Jun 2022 10:28:27 +0200
From:   Philippe Schenker <dev@...henker.ch>
To:     Deren Wu <deren.wu@...iatek.com>, Kalle Valo <kvalo@...nel.org>
Cc:     linux-wireless@...r.kernel.org, Felix Fietkau <nbd@....name>,
        linux@...mhuis.info, "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Lorenzo Bianconi <lorenzo.bianconi83@...il.com>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Paolo Abeni <pabeni@...hat.com>,
        Ryder Lee <ryder.lee@...iatek.com>,
        Sean Wang <sean.wang@...iatek.com>,
        Shayne Chen <shayne.chen@...iatek.com>,
        YN Chen <YN.Chen@...iatek.com>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-mediatek@...ts.infradead.org, netdev@...r.kernel.org
Subject: Re: [PATCH] Revert "mt76: mt7921: enable aspm by default"

On Tue, 2022-04-12 at 19:06 +0800, Deren Wu wrote:
> On Tue, 2022-04-12 at 12:37 +0300, Kalle Valo wrote:
> > Philippe Schenker <dev@...henker.ch> writes:
> > 
> > > This reverts commit bf3747ae2e25dda6a9e6c464a717c66118c588c8.
> > > 
> > > This commit introduces a regression on some systems where the
> > > kernel is
> > > crashing in different locations after a reboot was issued.
> > > 
> > > This issue was bisected on a Thinkpad P14s Gen2 (AMD) with latest
> > > firmware.
> > > 
> > > Link: 
> > > https://urldefense.com/v3/__https://lore.kernel.org/linux-wireless/5077a953487275837e81bdf1808ded00b9676f9f.camel@pschenker.ch/__;!!CTRNKA9wMg0ARbw!09tjyaQlMci3fVI3yiNiDJKUW_qwNA_CbVhoAraeIX96B99Q14J4iDycWA9cq36Y$
> > >  
> > > Signed-off-by: Philippe Schenker <dev@...henker.ch>
> > 
> > Can I take this to wireless tree? Felix, ack?
> > 
> > I'll also add:
> > 
> > Fixes: bf3747ae2e25 ("mt76: mt7921: enable aspm by default")
> > 
> 
> Hi Kalle,
> 
> We have a patch for a similar problem. Can you wait for the
> verification by Philippe?
> Commit 602cc0c9618a81 ("mt76: mt7921e: fix possible probe failure
> after
> reboot")
> Link: 
> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/drivers/net/wireless/mediatek/mt76?id=602cc0c9618a819ab00ea3c9400742a0ca318380
> 
> I can reproduce the problem in my v5.16-rc5 desktop. And the issue can
> be fixed when the patch applied.
> 
> 
> Hi Philippe,
> 
> Can you please help to check the patch in your platform?

Hi Kalle and Deren,

I just noticed on my system and mainline v5.18 reboots do now work
however Bluetooth is no longer accessible after a reboot.

Reverting commit bf3747ae2e25dda6a9e6c464a717c66118c588c8 on top of
v5.18 solves this problem for me.

@Deren are you aware of this bug?
@Kalle Is there a bugtracker somewhere I can submit this?

Thanks,
Philippe

> 
> 
> Regards,
> Deren
>