diff --git a/drivers/pnp/core.c b/drivers/pnp/core.c
index 5dba90995d9e1b4532b81341e2c195f620c1046c..88b3cde525968a2f6ee5e3b9be37e3177125a52f 100644
--- a/drivers/pnp/core.c
+++ b/drivers/pnp/core.c
@@ -164,6 +164,9 @@ int __pnp_add_device(struct pnp_dev *dev)
 	list_add_tail(&dev->global_list, &pnp_global);
 	list_add_tail(&dev->protocol_list, &dev->protocol->devices);
 	spin_unlock(&pnp_lock);
+	if (dev->protocol->can_wakeup)
+		device_set_wakeup_capable(&dev->dev,
+				dev->protocol->can_wakeup(dev));
 	return device_register(&dev->dev);
 }
 
diff --git a/drivers/pnp/pnpacpi/core.c b/drivers/pnp/pnpacpi/core.c
index f7ff628b7d9437a096d534ff6d829ce2c7cca49f..dc4e32e031e9d61f77a3d706d8582ac48285b039 100644
--- a/drivers/pnp/pnpacpi/core.c
+++ b/drivers/pnp/pnpacpi/core.c
@@ -122,17 +122,37 @@ static int pnpacpi_disable_resources(struct pnp_dev *dev)
 }
 
 #ifdef CONFIG_ACPI_SLEEP
+static bool pnpacpi_can_wakeup(struct pnp_dev *dev)
+{
+	struct acpi_device *acpi_dev = dev->data;
+	acpi_handle handle = acpi_dev->handle;
+
+	return acpi_bus_can_wakeup(handle);
+}
+
 static int pnpacpi_suspend(struct pnp_dev *dev, pm_message_t state)
 {
 	struct acpi_device *acpi_dev = dev->data;
 	acpi_handle handle = acpi_dev->handle;
 	int power_state;
 
+	if (device_can_wakeup(&dev->dev)) {
+		int rc = acpi_pm_device_sleep_wake(&dev->dev,
+				device_may_wakeup(&dev->dev));
+
+		if (rc)
+			return rc;
+	}
 	power_state = acpi_pm_device_sleep_state(&dev->dev, NULL);
 	if (power_state < 0)
 		power_state = (state.event == PM_EVENT_ON) ?
 				ACPI_STATE_D0 : ACPI_STATE_D3;
 
+	/* acpi_bus_set_power() often fails (keyboard port can't be
+	 * powered-down?), and in any case, our return value is ignored
+	 * by pnp_bus_suspend().  Hence we don't revert the wakeup
+	 * setting if the set_power fails.
+	 */
 	return acpi_bus_set_power(handle, power_state);
 }
 
@@ -141,6 +161,8 @@ static int pnpacpi_resume(struct pnp_dev *dev)
 	struct acpi_device *acpi_dev = dev->data;
 	acpi_handle handle = acpi_dev->handle;
 
+	if (device_may_wakeup(&dev->dev))
+		acpi_pm_device_sleep_wake(&dev->dev, false);
 	return acpi_bus_set_power(handle, ACPI_STATE_D0);
 }
 #endif
@@ -151,6 +173,7 @@ struct pnp_protocol pnpacpi_protocol = {
 	.set	 = pnpacpi_set_resources,
 	.disable = pnpacpi_disable_resources,
 #ifdef CONFIG_ACPI_SLEEP
+	.can_wakeup = pnpacpi_can_wakeup,
 	.suspend = pnpacpi_suspend,
 	.resume = pnpacpi_resume,
 #endif
diff --git a/include/linux/pnp.h b/include/linux/pnp.h
index 7c4193eb007248f31307d58b333edc11d0233bc3..1bc1338b817b8ab7b257e2dbe6325e9bcee38bbc 100644
--- a/include/linux/pnp.h
+++ b/include/linux/pnp.h
@@ -414,6 +414,7 @@ struct pnp_protocol {
 	int (*disable) (struct pnp_dev *dev);
 
 	/* protocol specific suspend/resume */
+	bool (*can_wakeup) (struct pnp_dev *dev);
 	int (*suspend) (struct pnp_dev * dev, pm_message_t state);
 	int (*resume) (struct pnp_dev * dev);