kernel/runtime_pm_fixups.patch

From 141d0d01ab292d4ea3a6d5e96b4048e10e68c1d3 Mon Sep 17 00:00:00 2001
From: Kyle McMartin <kyle@mcmartin.ca>
Date: Mon, 24 Jan 2011 13:01:57 -0500
Subject: [PATCH] runtime_pm_fixups

---
 drivers/acpi/bus.c      |    3 ++-
 drivers/acpi/pci_bind.c |    6 ++++++
 drivers/acpi/power.c    |    5 ++++-
 drivers/acpi/sleep.c    |    2 +-
 drivers/acpi/wakeup.c   |    2 +-
 drivers/pci/pci-acpi.c  |    2 +-
 include/acpi/acpi_bus.h |    2 +-
 7 files changed, 16 insertions(+), 6 deletions(-)

diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c
index 7ced61f..e4e0114 100644
--- a/drivers/acpi/bus.c
+++ b/drivers/acpi/bus.c
@@ -256,7 +256,8 @@ static int __acpi_bus_set_power(struct acpi_device *device, int state)
 	 * a lower-powered state.
 	 */
 	if (state < device->power.state) {
-		if (device->power.flags.power_resources) {
+		if (device->power.flags.power_resources &&
+		    !device->wakeup.run_wake_count) {
 			result = acpi_power_transition(device, state);
 			if (result)
 				goto end;
diff --git a/drivers/acpi/pci_bind.c b/drivers/acpi/pci_bind.c
index 2ef0409..4b0bb68 100644
--- a/drivers/acpi/pci_bind.c
+++ b/drivers/acpi/pci_bind.c
@@ -32,6 +32,8 @@
 #include <acpi/acpi_bus.h>
 #include <acpi/acpi_drivers.h>
 
+#include "internal.h"
+
 #define _COMPONENT		ACPI_PCI_COMPONENT
 ACPI_MODULE_NAME("pci_bind");
 
@@ -65,6 +67,7 @@ static int acpi_pci_bind(struct acpi_device *device)
 	acpi_handle handle;
 	struct pci_bus *bus;
 	struct pci_dev *dev;
+	int state;
 
 	dev = acpi_get_pci_dev(device->handle);
 	if (!dev)
@@ -87,6 +90,9 @@ static int acpi_pci_bind(struct acpi_device *device)
 		device->ops.unbind = acpi_pci_unbind;
 	}
 
+	acpi_power_get_inferred_state(device, &state);
+	acpi_power_transition(device, state);
+
 	/*
 	 * Evaluate and parse _PRT, if exists.  This code allows parsing of
 	 * _PRT objects within the scope of non-bridge devices.  Note that
diff --git a/drivers/acpi/power.c b/drivers/acpi/power.c
index 9ac2a9f..cd6a8df 100644
--- a/drivers/acpi/power.c
+++ b/drivers/acpi/power.c
@@ -412,7 +412,7 @@ int acpi_enable_wakeup_device_power(struct acpi_device *dev, int sleep_state)
  *    State Wake) for the device, if present
  * 2. Shutdown down the power resources
  */
-int acpi_disable_wakeup_device_power(struct acpi_device *dev)
+int acpi_disable_wakeup_device_power(struct acpi_device *dev, int sleep_state)
 {
 	int i, err = 0;
 
@@ -435,6 +435,9 @@ int acpi_disable_wakeup_device_power(struct acpi_device *dev)
 	if (err)
 		goto out;
 
+	if (sleep_state == ACPI_STATE_S0)
+		goto out;
+
 	/* Close power resource */
 	for (i = 0; i < dev->wakeup.resources.count; i++) {
 		int ret = acpi_power_off(dev->wakeup.resources.handles[i]);
diff --git a/drivers/acpi/sleep.c b/drivers/acpi/sleep.c
index d6a8cd1..5d68dc0 100644
--- a/drivers/acpi/sleep.c
+++ b/drivers/acpi/sleep.c
@@ -697,7 +697,7 @@ int acpi_pm_device_sleep_wake(struct device *dev, bool enable)
 
 	error = enable ?
 		acpi_enable_wakeup_device_power(adev, acpi_target_sleep_state) :
-		acpi_disable_wakeup_device_power(adev);
+		acpi_disable_wakeup_device_power(adev, acpi_target_sleep_state);
 	if (!error)
 		dev_info(dev, "wake-up capability %s by ACPI\n",
 				enable ? "enabled" : "disabled");
diff --git a/drivers/acpi/wakeup.c b/drivers/acpi/wakeup.c
index ed65014..a0cabc3 100644
--- a/drivers/acpi/wakeup.c
+++ b/drivers/acpi/wakeup.c
@@ -73,7 +73,7 @@ void acpi_disable_wakeup_devices(u8 sleep_state)
 				ACPI_GPE_DISABLE);
 
 		if (device_may_wakeup(&dev->dev))
-			acpi_disable_wakeup_device_power(dev);
+			acpi_disable_wakeup_device_power(dev, sleep_state);
 	}
 }
 
diff --git a/drivers/pci/pci-acpi.c b/drivers/pci/pci-acpi.c
index 6fe0772..819fa7a 100644
--- a/drivers/pci/pci-acpi.c
+++ b/drivers/pci/pci-acpi.c
@@ -302,7 +302,7 @@ static int acpi_dev_run_wake(struct device *phys_dev, bool enable)
 		if (!--dev->wakeup.run_wake_count) {
 			acpi_disable_gpe(dev->wakeup.gpe_device,
 					 dev->wakeup.gpe_number);
-			acpi_disable_wakeup_device_power(dev);
+			acpi_disable_wakeup_device_power(dev, ACPI_STATE_S0);
 		}
 	} else {
 		error = -EALREADY;
diff --git a/include/acpi/acpi_bus.h b/include/acpi/acpi_bus.h
index 78ca429..92d6e86 100644
--- a/include/acpi/acpi_bus.h
+++ b/include/acpi/acpi_bus.h
@@ -379,7 +379,7 @@ struct acpi_pci_root *acpi_pci_find_root(acpi_handle handle);
 #define DEVICE_ACPI_HANDLE(dev) ((acpi_handle)((dev)->archdata.acpi_handle))
 
 int acpi_enable_wakeup_device_power(struct acpi_device *dev, int state);
-int acpi_disable_wakeup_device_power(struct acpi_device *dev);
+int acpi_disable_wakeup_device_power(struct acpi_device *dev, int state);
 
 #ifdef CONFIG_PM_OPS
 int acpi_pm_device_sleep_state(struct device *, int *);
-- 
1.7.3.5