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Don't apply PM overrides to thunderbolt when PCI hotplug enabled #727

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Don't apply PM overrides to thunderbolt when PCI hotplug enabled #727

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36 changes: 19 additions & 17 deletions linux/aux-tools/startup-misc.sh
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Original file line number Diff line number Diff line change
Expand Up @@ -61,24 +61,26 @@ if [ "$suspend_mode" = "s0ix" ]; then
# assign thunderbolt root ports to pciback as workaround for suspend
# issue without PCI hotplut enabled, see
# https://github.com/QubesOS/qubes-linux-kernel/pull/903 for details
for dev in /sys/bus/pci/devices/0000:00:*; do
[ -h "$dev" ] || continue
sbdf=$(basename "$dev")
read -r dev_class < "$dev/class"
# PCIe bridge
if [ "$dev_class" = "0x060400" ]; then
# There seems to be no property saying it's thunderbolt other than product id...
lspci -s "$sbdf" | grep -q Thunderbolt || continue
if [ ! -d /sys/module/pci_hotplug ]; then
for dev in /sys/bus/pci/devices/0000:00:*; do
[ -h "$dev" ] || continue
sbdf=$(basename "$dev")
read -r dev_class < "$dev/class"
# PCIe bridge
if [ "$dev_class" = "0x060400" ]; then
# There seems to be no property saying it's thunderbolt other than product id...
lspci -s "$sbdf" | grep -q Thunderbolt || continue

bind_to_pciback "$sbdf"
echo "$sbdf" > /sys/bus/pci/drivers/pciback/qubes_exp_pm_suspend
echo "$sbdf" > /sys/bus/pci/drivers/pciback/qubes_exp_pm_suspend_force
elif [ "$dev_class" = "0x0c0340" ]; then
# Thunderbolt 4 NIH device
bind_to_pciback "$sbdf"
echo "$sbdf" > /sys/bus/pci/drivers/pciback/qubes_exp_pm_suspend
fi
done
bind_to_pciback "$sbdf"
echo "$sbdf" > /sys/bus/pci/drivers/pciback/qubes_exp_pm_suspend
echo "$sbdf" > /sys/bus/pci/drivers/pciback/qubes_exp_pm_suspend_force
elif [ "$dev_class" = "0x0c0340" ]; then
# Thunderbolt 4 NHI device
bind_to_pciback "$sbdf"
echo "$sbdf" > /sys/bus/pci/drivers/pciback/qubes_exp_pm_suspend
fi
done
fi
echo s2idle > /sys/power/mem_sleep
elif [ "$suspend_mode" = "s3" ]; then
echo deep > /sys/power/mem_sleep
Expand Down