ath11k hibernation broken since v6.11

ath11k hibernation broken since v6.11

[Julian Wollrath]

Dear maintainers,

it seems for v6.11 the patch making hibernation possible with ath11k
was reverted again (in commit 2f833e8948). This broke hibernation for
me. Is there a plan to re-introduce it? With reverting the revert on
top of v6.12-rc7 hibernation works fine for me with a

$ lspci -nn
02:00.0 Network controller [0280]: Qualcomm Technologies, Inc QCNFA765
Wireless Network Adapter [17cb:1103] (rev 01)

in a Thinkpad T14 G4.


Best regards,
Julian Wollrath

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Re: ath11k hibernation broken since v6.11

[Mihai Moldovan]

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* On 11/15/24 08:35, Julian Wollrath wrote:
> it seems for v6.11 the patch making hibernation possible with ath11k
> was reverted again (in commit 2f833e8948). This broke hibernation for
> me. Is there a plan to re-introduce it?

Unfortunately, the commit message mentions that no alternative fix is available, 
so I wouldn't hold my breath.

As a fellow QCNFA765 user in a non-Lenovo machine, previously on 6.9.1 which 
didn't include the hibernation patch, I resorted to a workaround of stopping the 
wifi interface, removing relevant modules (modprobe -r 'ath11k_pci' 'ath11k' 
'qmi_helpers') on suspend/hibernate and re-inserting ath11k_pci on resume via 
elogind system-sleep hooks. This is easily portable to a systemd-based setup.

This sidestepped any hibernation issues related to the module.



Mihai

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