wifi: ath11k: unregister PM notifier on QMI init failure path

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ath11k_core_init() registers a PM notifier before the QMI server
becomes available. If the QMI server never arrives, the device remove()
path can take the early-exit path introduced for QMI initialization
failures, skipping ath11k_core_deinit().

As a result, the PM notifier remains registered after the ath11k base
object has been freed. A subsequent suspend or resume event may invoke
the stale notifier and trigger a use-after-free.

Fix this by explicitly unregistering the PM notifier in the QMI failure
cleanup path before releasing ath11k resources.

Tested-on: WCN6750 hw1.0 AHB WLAN.MSL.2.0.c2-00204-QCAMSLSWPLZ-1

Fixes: 32d93b51bc ("wifi: ath11k: choose default PM policy for hibernation")
Signed-off-by: Miaoqing Pan <miaoqing.pan@oss.qualcomm.com>
Reviewed-by: Baochen Qiang <baochen.qiang@oss.qualcomm.com>
Reviewed-by: Rameshkumar Sundaram <rameshkumar.sundaram@oss.qualcomm.com>
Link: https://patch.msgid.link/20260806101331.484063-4-miaoqing.pan@oss.qualcomm.com
Signed-off-by: Jeff Johnson <jeff.johnson@oss.qualcomm.com>

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Miaoqing Pan 2026-08-06 18:13:31 +08:00 • committed by Jeff Johnson

parent 1a7bcf5324

commit 1d8e73163e

1 changed files with 1 additions and 0 deletions

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drivers/net/wireless/ath/ath11k/ahb.c

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