Rescanning PCI bus does not readd dGPU

[crawfxrd]

gaze15 on 2020-08-14_c0f1d2c

root@gaze15:~# lspci -d 10de::
01:00.0 VGA compatible controller: NVIDIA Corporation TU116M [GeForce GTX 1660 Ti Mobile] (rev a1)
01:00.1 Audio device: NVIDIA Corporation TU116 High Definition Audio Controller (rev a1)
01:00.2 USB controller: NVIDIA Corporation TU116 USB 3.1 Host Controller (rev a1)
01:00.3 Serial bus controller [0c80]: NVIDIA Corporation TU116 [GeForce GTX 1650 SUPER] (rev a1)
root@gaze15:~# echo 1 > /sys/bus/pci/devices/0000\:01\:00.3/remove
root@gaze15:~# echo 1 > /sys/bus/pci/devices/0000\:01\:00.2/remove
root@gaze15:~# echo 1 > /sys/bus/pci/devices/0000\:01\:00.1/remove
root@gaze15:~# echo 1 > /sys/bus/pci/devices/0000\:01\:00.0/remove
root@gaze15:~# lspci -d 10de::
root@gaze15:~# echo 1 > /sys/bus/pci/rescan 
root@gaze15:~# lspci -d 10de::
root@gaze15:~# 

[jacobgkau]

This also affects oryp7, but not oryp8.