4 files changed, 15 insertions, 4 deletions

diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c
index 3263b68cdfa3..3188da3df8da 100644
--- a/drivers/acpi/bus.c
+++ b/drivers/acpi/bus.c
@@ -250,6 +250,10 @@ static int __acpi_bus_set_power(struct acpi_device *device, int state)
                 return -ENODEV;
         }
 
+        /* For D3cold we should execute _PS3, not _PS4. */
+        if (state == ACPI_STATE_D3_COLD)
+                object_name[3] = '3';
+
         /*
          * Transition Power
          * ----------------
diff --git a/drivers/acpi/power.c b/drivers/acpi/power.c
index 330bb4d75852..0500f719f63e 100644
--- a/drivers/acpi/power.c
+++ b/drivers/acpi/power.c
@@ -660,7 +660,7 @@ int acpi_power_on_resources(struct acpi_device *device, int state)
 
 int acpi_power_transition(struct acpi_device *device, int state)
 {
-        int result;
+        int result = 0;
 
         if (!device || (state < ACPI_STATE_D0) || (state > ACPI_STATE_D3_COLD))
                 return -EINVAL;
@@ -679,8 +679,11 @@ int acpi_power_transition(struct acpi_device *device, int state)
          * (e.g. so the device doesn't lose power while transitioning).  Then,
          * we dereference all power resources used in the current list.
          */
-        result = acpi_power_on_list(&device->power.states[state].resources);
-        if (!result)
+        if (state < ACPI_STATE_D3_COLD)
+                result = acpi_power_on_list(
+                        &device->power.states[state].resources);
+
+        if (!result && device->power.state < ACPI_STATE_D3_COLD)
                 acpi_power_off_list(
                         &device->power.states[device->power.state].resources);
 
diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c
index 7417267e88fa..85cbfdccc97c 100644
--- a/drivers/acpi/scan.c
+++ b/drivers/acpi/scan.c
@@ -908,6 +908,10 @@ static int acpi_bus_get_power_flags(struct acpi_device *device)
         device->power.states[ACPI_STATE_D3].flags.valid = 1;
         device->power.states[ACPI_STATE_D3].power = 0;
 
+        /* Set D3cold's explicit_set flag if _PS3 exists. */
+        if (device->power.states[ACPI_STATE_D3_HOT].flags.explicit_set)
+                device->power.states[ACPI_STATE_D3_COLD].flags.explicit_set = 1;
+
         acpi_bus_init_power(device);
 
         return 0;
diff --git a/drivers/pci/pci-acpi.c b/drivers/pci/pci-acpi.c
index 1929c0c63b75..61e2fefeedab 100644
--- a/drivers/pci/pci-acpi.c
+++ b/drivers/pci/pci-acpi.c
@@ -223,7 +223,7 @@ static int acpi_pci_set_power_state(struct pci_dev *dev, pci_power_t state)
                 [PCI_D0] = ACPI_STATE_D0,
                 [PCI_D1] = ACPI_STATE_D1,
                 [PCI_D2] = ACPI_STATE_D2,
-                [PCI_D3hot] = ACPI_STATE_D3_HOT,
+                [PCI_D3hot] = ACPI_STATE_D3,
                 [PCI_D3cold] = ACPI_STATE_D3
         };
         int error = -EINVAL;