Re: [PATCH ath-next v3 5/6] wifi: ath11k: choose default PM policy for hibernation

[Jeff Johnson]

On 6/17/2025 5:15 PM, Konrad Dybcio wrote:
> On 3/28/25 6:32 AM, Baochen Qiang wrote:
>> Now WoWLAN mode is chosen for those machines listed in the quirk table.
>> This works for suspend (S3) but breaks for hibernation (S4), because
>> WoWLAN mode requires WLAN power to be sustained, which is not the case
>> during hibernation. For hibernation, the default mode should be used.
>>
>> Register a PM notifier with which kernel can notify us of the actual PM
>> operation: if system is going to suspend, the original PM policy is
>> honored; while if it is hibernation, overwrite it with default policy.
>>
>> To summarize: for suspend (S3), WoWLAN mode is chosen for machines listed
>> in the quirk table, non-WoWLAN mode for others; for hibernation (S4),
>> non-WoWLAN mode is chosen for all.
>>
>> Tested-on: WCN6855 hw2.0 PCI WLAN.HSP.1.1-03125-QCAHSPSWPL_V1_V2_SILICONZ_LITE-3.6510.30
>>
>> Tested-by: Takashi Iwai <tiwai@xxxxxxx>
>> Signed-off-by: Baochen Qiang <quic_bqiang@xxxxxxxxxxx>
>> ---
> 
> I've bisected the following splat to this patch, still happening on
> linux-next/master, WCN6855 + SC8280XP CRD, 100% reproducibility 

This smells a lot like the issue recently fixed in ath12k:
https://msgid.link/20250604055250.1228501-1-miaoqing.pan@xxxxxxxxxxxxxxxx

Baochen, can you look at the applicability of that patch?

/jeff