[PATCH v1 03/11] PCI/PM: Set current_state to D3cold if the device is not accessible

Rafael J. Wysocki
2022-05-05T18:31:46Z

Make pci_power_up() and pci_set_low_power_state() change current_state
to PCI_D3cold when the device is not accessible along the lines of
pci_update_current_state().

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
---
drivers/pci/pci.c | 2 ++
1 file changed, 2 insertions(+)

Index: linux-pm/drivers/pci/pci.c
===================================================================
--- linux-pm.orig/drivers/pci/pci.c
+++ linux-pm/drivers/pci/pci.c
@@ -1207,6 +1207,7 @@ int pci_power_up(struct pci_dev *dev)
if (PCI_POSSIBLE_ERROR(pmcsr)) {
pci_err(dev, "Unable to change power state from %s to D0, device inaccessible\n",
pci_power_name(dev->current_state));
+ dev->current_state = PCI_D3cold;
return -EIO;
}

@@ -1335,6 +1336,7 @@ static int pci_set_low_power_state(struc
pci_err(dev, "Unable to change power state from %s to %s, device inaccessible\n",
pci_power_name(dev->current_state),
pci_power_name(state));
+ dev->current_state = PCI_D3cold;
return -EIO;
}