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Re: pci_alloc_irq_vectors fails ENOSPC for XPS 13 9310

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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.





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