Comment # 20 on bug 1202492 from Martti Laaksonen

The subdirectory exists but it is missing those links to PCI devices.

5.18.15-1-default:
total 0
lrwxrwxrwx 1 root root    0 elo    17 18:39 0000:0b:00.1 ->
../../../../devices/pci0000:00/0000:00:08.1/0000:0b:00.1
lrwxrwxrwx 1 root root    0 elo    17 18:39 0000:0b:00.6 ->
../../../../devices/pci0000:00/0000:00:08.1/0000:0b:00.6
--w------- 1 root root 4096 elo    17 18:39 bind
lrwxrwxrwx 1 root root    0 elo    17 18:27 module ->
../../../../module/snd_hda_intel
--w------- 1 root root 4096 elo    17 18:39 new_id
--w------- 1 root root 4096 elo    17 18:39 remove_id
--w------- 1 root root 4096 elo    17 18:27 uevent
--w------- 1 root root 4096 elo    17 18:39 unbind

5.19.1-1-default:
total 0
--w------- 1 root root 4096 elo    17 18:44 bind
lrwxrwxrwx 1 root root    0 elo    17 18:44 module ->
../../../../module/snd_hda_intel
--w------- 1 root root 4096 elo    17 18:44 new_id
--w------- 1 root root 4096 elo    17 18:44 remove_id
--w------- 1 root root 4096 elo    17 18:43 uevent
--w------- 1 root root 4096 elo    17 18:44 unbind

Trying to do that bind thingy using either of the PCI slots shown in kernel
5.18.15 sysfs directory listing fails with 'Device or resource busy' error.

bender:~ # echo 0000:0b:00.6 > /sys/bus/pci/drivers/snd_hda_intel/bind
-bash: echo: write error: Device or resource busy
bender:~ # echo 0000:0b:00.1 > /sys/bus/pci/drivers/snd_hda_intel/bind
-bash: echo: write error: Device or resource busy