linux-kernel - Re: [PATCH] wireless: ath10k: Return early in ath10k_qmi_event_server

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Date:   Mon, 17 Aug 2020 14:36:09 +0530
From:   Amit Pundir <amit.pundir@...aro.org>
To:     Kalle Valo <kvalo@...eaurora.org>
Cc:     Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>,
        Brian Norris <briannorris@...omium.org>,
        Govind Singh <govinds@...eaurora.org>,
        Rakesh Pillai <pillair@....qualcomm.com>,
        lkml <linux-kernel@...r.kernel.org>,
        ath10k <ath10k@...ts.infradead.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        John Stultz <john.stultz@...aro.org>,
        Sibi Sankar <sibis@...eaurora.org>,
        Niklas Cassel <niklas.cassel@...aro.org>
Subject: Re: [PATCH] wireless: ath10k: Return early in ath10k_qmi_event_server_exit()
 to avoid hard crash on reboot

On Mon, 8 Jun 2020 at 17:07, Kalle Valo <kvalo@...eaurora.org> wrote:
> > I don't agree with this. If you read through the replies to the bug report,
> > it is clear that NS migration uncovered a corner case or even a bug. So we
> > should try to fix that indeed.
>
> I'm with Mani, we should try to fix ath10k instead. Hopefully we can
> find a fix soon.

Hi Team,

Any updates on this? I can reproduce this hard crash on v5.9-rc1 as well.

It is not a blocker for us because we switched to a userspace
workaround, where we do not wait for modem to shutdown gracefully and
SIGKILL it instead, during the shutdown/reboot process. But I'm happy
to take a swing at any intermediate/in-progress solution available.

Regards,
Amit Pundir

>
> Forcing QCA6390 users to use the userspace qrtr-ns would be bad user
> experience, I really would want to avoid that.
>
> --
> https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches