PCI / PM: Fix D3/D3cold/D4 messages printed by acpi_pci_set_power_state()

If a PCI device is put into D3_cold by acpi_bus_set_power(),
the message printed by acpi_pci_set_power_state() says that its
power state has been changed to D4, which doesn't make sense.
In turn, if the device is put into D3_hot, the message simply
says "D3" without specifying the variant of the D3 state.

Fix this by using the pci_power_name() macro for printing the state
name instead of building it from the numeric value corresponding to
the given state directly.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>

diff --git a/drivers/pci/pci-acpi.c b/drivers/pci/pci-acpi.c
index fbf7b26c7c8a5119c527c00a15a35539b4aa3a2b..c5792d622dc4528ba572632d39c7c1f1d7ae438d 100644 (file)
--- a/drivers/pci/pci-acpi.c
+++ b/drivers/pci/pci-acpi.c
@@ -266,8 +266,8 @@ static int acpi_pci_set_power_state(struct pci_dev *dev, pci_power_t state)
        }
 
        if (!error)
-               dev_printk(KERN_INFO, &dev->dev,
-                               "power state changed by ACPI to D%d\n", state);
+               dev_info(&dev->dev, "power state changed by ACPI to %s\n",
+                        pci_power_name(state));
 
        return error;
 }