Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspend-2.6

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspend-2.6:
  PM: PM QOS update fix
  Freezer / cgroup freezer: Update stale locking comments
  PM / platform_bus: Allow runtime PM by default
  i2c: Fix bus-level power management callbacks
  PM QOS update
  PM / Hibernate: Fix block_io.c printk warning
  PM / Hibernate: Group swap ops
  PM / Hibernate: Move the first_sector out of swsusp_write
  PM / Hibernate: Separate block_io
  PM / Hibernate: Snapshot cleanup
  FS / libfs: Implement simple_write_to_buffer
  PM / Hibernate: document open(/dev/snapshot) side effects
  PM / Runtime: Add sysfs debug files
  PM: Improve device power management document
  PM: Update device power management document
  PM: Allow runtime_suspend methods to call pm_schedule_suspend()
  PM: pm_wakeup - switch to using bool

6 files changed, 47 insertions, 21 deletions

diff --git a/include/linux/fs.h b/include/linux/fs.h
index 44f35aea2f1..948bd2bfb1d 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -2362,6 +2362,8 @@ extern void simple_release_fs(struct vfsmount **mount, int *count);
 
 extern ssize_t simple_read_from_buffer(void __user *to, size_t count,
 			loff_t *ppos, const void *from, size_t available);
+extern ssize_t simple_write_to_buffer(void *to, size_t available, loff_t *ppos,
+		const void __user *from, size_t count);
 
 extern int simple_fsync(struct file *, struct dentry *, int);
 
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index fa8b4763799..3857517f1ca 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -31,6 +31,7 @@
 #include <linux/if_link.h>
 
 #ifdef __KERNEL__
+#include <linux/pm_qos_params.h>
 #include <linux/timer.h>
 #include <linux/delay.h>
 #include <linux/mm.h>
@@ -711,6 +712,9 @@ struct net_device {
 	 * the interface.
 	 */
 	char			name[IFNAMSIZ];
+
+	struct pm_qos_request_list *pm_qos_req;
+
 	/* device name hash chain */
 	struct hlist_node	name_hlist;
 	/* snmp alias */
diff --git a/include/linux/pm_qos_params.h b/include/linux/pm_qos_params.h
index d74f75ed1e4..8ba440e5eb7 100644
--- a/include/linux/pm_qos_params.h
+++ b/include/linux/pm_qos_params.h
@@ -14,12 +14,14 @@
 #define PM_QOS_NUM_CLASSES 4
 #define PM_QOS_DEFAULT_VALUE -1
 
-int pm_qos_add_requirement(int qos, char *name, s32 value);
-int pm_qos_update_requirement(int qos, char *name, s32 new_value);
-void pm_qos_remove_requirement(int qos, char *name);
+struct pm_qos_request_list;
 
-int pm_qos_requirement(int qos);
+struct pm_qos_request_list *pm_qos_add_request(int pm_qos_class, s32 value);
+void pm_qos_update_request(struct pm_qos_request_list *pm_qos_req,
+		s32 new_value);
+void pm_qos_remove_request(struct pm_qos_request_list *pm_qos_req);
 
-int pm_qos_add_notifier(int qos, struct notifier_block *notifier);
-int pm_qos_remove_notifier(int qos, struct notifier_block *notifier);
+int pm_qos_request(int pm_qos_class);
+int pm_qos_add_notifier(int pm_qos_class, struct notifier_block *notifier);
+int pm_qos_remove_notifier(int pm_qos_class, struct notifier_block *notifier);
 
diff --git a/include/linux/pm_runtime.h b/include/linux/pm_runtime.h
index b776db73724..6e81888c622 100644
--- a/include/linux/pm_runtime.h
+++ b/include/linux/pm_runtime.h
@@ -30,6 +30,9 @@ extern void pm_runtime_enable(struct device *dev);
 extern void __pm_runtime_disable(struct device *dev, bool check_resume);
 extern void pm_runtime_allow(struct device *dev);
 extern void pm_runtime_forbid(struct device *dev);
+extern int pm_generic_runtime_idle(struct device *dev);
+extern int pm_generic_runtime_suspend(struct device *dev);
+extern int pm_generic_runtime_resume(struct device *dev);
 
 static inline bool pm_children_suspended(struct device *dev)
 {
@@ -96,6 +99,10 @@ static inline bool device_run_wake(struct device *dev) { return false; }
 static inline void device_set_run_wake(struct device *dev, bool enable) {}
 static inline bool pm_runtime_suspended(struct device *dev) { return false; }
 
+static inline int pm_generic_runtime_idle(struct device *dev) { return 0; }
+static inline int pm_generic_runtime_suspend(struct device *dev) { return 0; }
+static inline int pm_generic_runtime_resume(struct device *dev) { return 0; }
+
 #endif /* !CONFIG_PM_RUNTIME */
 
 static inline int pm_runtime_get(struct device *dev)
diff --git a/include/linux/pm_wakeup.h b/include/linux/pm_wakeup.h
index 0aae7776185..22d64c18056 100644
--- a/include/linux/pm_wakeup.h
+++ b/include/linux/pm_wakeup.h
@@ -25,32 +25,34 @@
 # error "please don't include this file directly"
 #endif
 
+#include <linux/types.h>
+
 #ifdef CONFIG_PM
 
 /* changes to device_may_wakeup take effect on the next pm state change.
  * by default, devices should wakeup if they can.
  */
-static inline void device_init_wakeup(struct device *dev, int val)
+static inline void device_init_wakeup(struct device *dev, bool val)
 {
-	dev->power.can_wakeup = dev->power.should_wakeup = !!val;
+	dev->power.can_wakeup = dev->power.should_wakeup = val;
 }
 
-static inline void device_set_wakeup_capable(struct device *dev, int val)
+static inline void device_set_wakeup_capable(struct device *dev, bool capable)
 {
-	dev->power.can_wakeup = !!val;
+	dev->power.can_wakeup = capable;
 }
 
-static inline int device_can_wakeup(struct device *dev)
+static inline bool device_can_wakeup(struct device *dev)
 {
 	return dev->power.can_wakeup;
 }
 
-static inline void device_set_wakeup_enable(struct device *dev, int val)
+static inline void device_set_wakeup_enable(struct device *dev, bool enable)
 {
-	dev->power.should_wakeup = !!val;
+	dev->power.should_wakeup = enable;
 }
 
-static inline int device_may_wakeup(struct device *dev)
+static inline bool device_may_wakeup(struct device *dev)
 {
 	return dev->power.can_wakeup && dev->power.should_wakeup;
 }
@@ -58,20 +60,28 @@ static inline int device_may_wakeup(struct device *dev)
 #else /* !CONFIG_PM */
 
 /* For some reason the next two routines work even without CONFIG_PM */
-static inline void device_init_wakeup(struct device *dev, int val)
+static inline void device_init_wakeup(struct device *dev, bool val)
 {
-	dev->power.can_wakeup = !!val;
+	dev->power.can_wakeup = val;
 }
 
-static inline void device_set_wakeup_capable(struct device *dev, int val) { }
+static inline void device_set_wakeup_capable(struct device *dev, bool capable)
+{
+}
 
-static inline int device_can_wakeup(struct device *dev)
+static inline bool device_can_wakeup(struct device *dev)
 {
 	return dev->power.can_wakeup;
 }
 
-#define device_set_wakeup_enable(dev, val)	do {} while (0)
-#define device_may_wakeup(dev)			0
+static inline void device_set_wakeup_enable(struct device *dev, bool enable)
+{
+}
+
+static inline bool device_may_wakeup(struct device *dev)
+{
+	return false;
+}
 
 #endif /* !CONFIG_PM */
 
diff --git a/include/sound/pcm.h b/include/sound/pcm.h
index 8b611a56198..dd76cdede64 100644
--- a/include/sound/pcm.h
+++ b/include/sound/pcm.h
@@ -29,6 +29,7 @@
 #include <linux/poll.h>
 #include <linux/mm.h>
 #include <linux/bitops.h>
+#include <linux/pm_qos_params.h>
 
 #define snd_pcm_substream_chip(substream) ((substream)->private_data)
 #define snd_pcm_chip(pcm) ((pcm)->private_data)
@@ -365,7 +366,7 @@ struct snd_pcm_substream {
 	int number;
 	char name[32];			/* substream name */
 	int stream;			/* stream (direction) */
-	char latency_id[20];		/* latency identifier */
+	struct pm_qos_request_list *latency_pm_qos_req; /* pm_qos request */
 	size_t buffer_bytes_max;	/* limit ring buffer size */
 	struct snd_dma_buffer dma_buffer;
 	unsigned int dma_buf_id;