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>

1 files changed, 2 insertions, 2 deletions

diff --git a/drivers/pci/pci-acpi.c b/drivers/pci/pci-acpi.c
index fbf7b26c7c8a..c5792d622dc4 100644
--- 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;
 }