[SoundWire] Kernel Oops on machine/codec driver remove

[pablos-here]

Describe the bug
I was attempting to configure the sound card on my Dell XPS 9700 as the mic was not working (speakers work). This resulted in a kernel call trace which I submitted a bug against[1] against my distro.

I distilled the developer's test case so blame me for non-intuitive cruft. There are two conditions which cause the oops - see below.

Just in case, I have captured separately the call trace for each condition.

I'm also uploading alsa-info.txt.

Refernces
1 - https://bugzilla.suse.com/show_bug.cgi?id=1197315

Condition 1

/sbin/modprobe -r snd_soc_sof_sdw
/sbin/modprobe -r snd_soc_rt711

Condition 2

# 
# Run me twice
# 
/sbin/modprobe -r snd_soc_sof_sdw
/sbin/modprobe -r snd_soc_rt1308_sdw

Call trace per condition
condition-1.txt
condition-2.txt

[plbossart]

@looney-loon Can you try and remove the parent PCI device first to see if this helps? this is what we do in our remove/insert tests. I am not sure if we've ever tested removing the machine driver this way.

/sbin/modprobe -r snd_sof_pci_intel_cnl
/sbin/modprobe -r snd_soc_sof_sdw
/sbin/modprobe -r snd_soc_rt711
/sbin/modprobe -r snd_soc_rt1308_sdw
```

[plbossart]

For reference, these are the scripts we use:

https://github.com/thesofproject/sof-test/blob/main/tools/kmod/sof_remove.sh
https://github.com/thesofproject/sof-test/blob/main/tools/kmod/sof_insert.sh

[plbossart]

I can reproduce the problem, see tentative fix at 8274036 PR #3534

[pablos-here]

Can you try and remove the parent PCI device first to see if this helps? this is what we do in our remove/insert tests. I am not sure if we've ever tested removing the machine driver this way.

/sbin/modprobe -r snd_sof_pci_intel_cnl
/sbin/modprobe -r snd_soc_sof_sdw
/sbin/modprobe -r snd_soc_rt711
/sbin/modprobe -r snd_soc_rt1308_sdw

Hi Pierre-Louis,

I just tested the commands above and it works. I'll update the SUSE bug.

Glad the issue netted something productive on your end.

Let me know if you'd like me to close the issue or whether your workflow handles it.

Merci beaucoup!