Re: [REGRESSION] bluetooth: mt7921: Crash on Resume From Suspend And Hibernate

From: John Glotzer
Date: Thu Dec 05 2024 - 21:29:35 EST


Sergio,

My apologies, I neglected to mention that my setup is PCI, and not USB.

It's an AMD Ryzen 5 7600 CPU on a PRO B650M-A Wifi motherboard. For completeness OS is Fedora 40
with any kernel starting with 6.11.x.

$ lspci | grep MEDIATEK
0c:00.0 Network controller: MEDIATEK Corp. MT7922 802.11ax PCI Express Wireless Network Adapter

$lshw -C Network
...
*-network
description: Wireless interface
product: MT7922 802.11ax PCI Express Wireless Network Adapter
vendor: MEDIATEK Corp.
physical id: 0
bus info: pci@0000:0c:00.0
logical name: wlp12s0
version: 00
serial: 0e:80:32:35:2c:9b
width: 64 bits
clock: 33MHz
capabilities: bus_master cap_list ethernet physical wireless
configuration: broadcast=yes driver=mt7921e driverversion=6.11.10-200.fc40.x86_64 firmware=____000000-20240716163327
ip=192.168.139.211 latency=0 link=yes multicast=yes wireless=IEEE 802.11
resources: iomemory:fc0-fbf irq:103 memory:fcf0300000-fcf03fffff memory:f6c00000-f6c07fff

What I am struggling to understand is given how easy this issue is to reproduce - an AMD CPU, Mediatek MT7922 wifi/bluetooth chip,
and a 6.11 kernel, you suspend, and then wake up, kernel panics - I would have thought that the interested parties would
make this a priority.

I think that a logical first step would be for SW owners to confirm (or deny) the anomalous behavior.

Thanks,

John