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From:   wi nk <wink@technolu.st>
Date:   Thu, 12 Nov 2020 01:24:05 +0100
Message-ID: <CAHUdJJVp5r55NtE+BNz5XGtnaks6mDKQBFodz63DdULBVhD0Lg@mail.gmail.com>
Subject: Re: pci_alloc_irq_vectors fails ENOSPC for XPS 13 9310
To:     Stefani Seibold <stefani@seibold.net>
Cc:     Kalle Valo <kvalo@codeaurora.org>,
        Thomas Krause <thomaskrause@posteo.de>,
        Govind Singh <govinds@codeaurora.org>,
        linux-pci@vger.kernel.org, linux-wireless@vger.kernel.org,
        Devin Bayer <dev@doubly.so>, Christoph Hellwig <hch@lst.de>,
        Bjorn Helgaas <helgaas@kernel.org>,
        Thomas Gleixner <tglx@linutronix.de>,
        ath11k@lists.infradead.org, David Woodhouse <dwmw@amazon.co.uk>
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On Wed, Nov 11, 2020 at 11:02 PM Stefani Seibold <stefani@seibold.net> wrote:
>
> On Wed, 2020-11-11 at 21:10 +0200, Kalle Valo wrote:
> >
> > The proof of concept patch for v5.10-rc2 is here:
> >
> > https://patchwork.kernel.org/project/linux-wireless/patch/1605121102-14352-1-git-send-email-kvalo@codeaurora.org/
> >
> > Hopefully it makes it possible to boot the firmware now. But this is
> > a
> > quick hack and most likely buggy, so keep your expectations low :)
> >
> > In case there are these warnings during firmware initialisation:
> >
> > ath11k_pci 0000:05:00.0: qmi failed memory request, err = -110
> > ath11k_pci 0000:05:00.0: qmi failed to respond fw mem req:-110
> >
> > Try reverting this commit:
> >
> > 7fef431be9c9 mm/page_alloc: place pages to tail in
> > __free_pages_core()
> >
> > That's another issue which is debugged here:
> >
> > http://lists.infradead.org/pipermail/ath11k/2020-November/000550.html
> >
>
> Applying the patch and revert patch 7fef431be9c9 worked on the first
> glance.
>
> After a couple of minutes the connection get broken. The kernel log
> shows the following error:
>
> ath11k_pci 0000:55:00.0: wmi command 16387 timeout
> ath11k_pci 0000:55:00.0: failed to send WMI_PDEV_SET_PARAM cmd
> ath11k_pc
> i 0000:55:00.0: failed to enable PMF QOS: (-11
>
> It is also not possible to unload the ath11k_pci, rmmod will hang.
>
>

I can confirm the same behavior as Stefani so far.  After applying the
patch, and reverting commit 7fef431be9c9, I am able to connect to a
network.  It hasn't disconnected yet (I'm sending this email via that
connection).  I'll report what I find next.

Thanks again for the help!