The ordering of operations in pci_back_from_sleep() is incorrect,
because the device may be in D3cold when it runs and pci_enable_wake()
needs to access the device's configuration space which cannot be
done in D3cold.
Fix this by calling pci_set_power_state() to put the device into D0
before calling pci_enable_wake() for it.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
*/
int pci_back_from_sleep(struct pci_dev *dev)
{
+ int ret = pci_set_power_state(dev, PCI_D0);
+
+ if (ret)
+ return ret;
+
pci_enable_wake(dev, PCI_D0, false);
- return pci_set_power_state(dev, PCI_D0);
+ return 0;
}
EXPORT_SYMBOL(pci_back_from_sleep);