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Re: pci_alloc_irq_vectors fails ENOSPC for XPS 13 9310

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On Thu, Nov 12, 2020 at 2:10 AM wi nk <wink@xxxxxxxxxxx> wrote:
>
> I've yet to see any instability after 45 minutes of exercising it, I
> do see a couple of messages that came out of the driver:
>
> [    8.963389] ath11k_pci 0000:55:00.0: Unknown eventid: 0x16005
> [   11.342317] ath11k_pci 0000:55:00.0: Unknown eventid: 0x1d00a
>
> then when it associates:
>
> [   16.718895] wlp85s0: send auth to ec:08:6b:27:01:ea (try 1/3)
> [   16.722636] wlp85s0: authenticated
> [   16.724150] wlp85s0: associate with ec:08:6b:27:01:ea (try 1/3)
> [   16.726486] wlp85s0: RX AssocResp from ec:08:6b:27:01:ea
> (capab=0x411 status=0 aid=8)
> [   16.738443] wlp85s0: associated
> [   16.764966] IPv6: ADDRCONF(NETDEV_CHANGE): wlp85s0: link becomes ready
>
> The adapter is achieving around 500 mbps on my gigabit connection, my
> 2018 mbp sees around 650, so it's doing pretty well so far.
>
> Stefani - when you applied the patch that Kalle shared, which branch
> did you apply it to?  I applied it to ath11k-qca6390-bringup and when
> I revert 7fef431be9c9 there is a small merge conflict I needed to
> resolve.  I wonder if either the starting branch, or your chosen
> resolution are related to the instability you see (or I'm just lucky
> so far! :)).
>
> On Thu, Nov 12, 2020 at 1:24 AM wi nk <wink@xxxxxxxxxxx> wrote:
> >
> > On Wed, Nov 11, 2020 at 11:02 PM Stefani Seibold <stefani@xxxxxxxxxxx> 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@xxxxxxxxxxxxxx/
> > > >
> > > > 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!

Sigh.... sorry for the top post again.  I'll now get a real email client.



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