On 6/18/25 10:52 AM, Johan Hovold wrote: > On Wed, Jun 18, 2025 at 02:15:04AM +0200, 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 > > WFIW, I'm not seeing this with 6.16-rc2 (which has this patch) on either > the X13s or sc8280xp-crd (ath11k now fails to resume on the latter > because of missing regulatory data, but that appears to be a separate > regression). Do you have CONFIG_DEBUG_NOTIFIERS? >> [root@sc8280xp-crd ~]# echo mem > /sys/power/state >> [ 20.267830] fb0: Framebuffer is not in virtual address space. >> [ 39.863070] PM: suspend entry (s2idle) >> [ 39.908067] Filesystems sync: 0.035 seconds >> [ 39.934453] ------------[ cut here ]------------ >> [ 39.939259] Invalid notifier called! >> [ 39.939268] WARNING: CPU: 5 PID: 513 at kernel/notifier.c:79 notifier_call_chain+0x84/0x1a4 >> [ 39.951566] Modules linked in: >> [ 39.954732] CPU: 5 UID: 0 PID: 513 Comm: bash Not tainted 6.14.0-rc4longbois-01215-g32d93b51bc7e #12177 > > 6.14? g show 32d93b51bc7e2e557771abe4a88da69c609e3d52:Makefile | head # SPDX-License-Identifier: GPL-2.0 VERSION = 6 PATCHLEVEL = 14 SUBLEVEL = 0 EXTRAVERSION = -rc4 it's been in the tree for a while Konrad
