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 / Runtime: Add runtime PM statistics (v3)
  PM / Runtime: Make runtime_status attribute not debug-only (v. 2)
  PM: Do not use dynamically allocated objects in pm_wakeup_event()
  PM / Suspend: Fix ordering of calls in suspend error paths
  PM / Hibernate: Fix snapshot error code path
  PM / Hibernate: Fix hibernation_platform_enter()
  pm_qos: Get rid of the allocation in pm_qos_add_request()
  pm_qos: Reimplement using plists
  plist: Add plist_last
  PM: Make it possible to avoid races between wakeup and system sleep
  PNPACPI: Add support for remote wakeup
  PM: describe kernel policy regarding wakeup defaults (v. 2)
  PM / Hibernate: Fix typos in comments in kernel/power/swap.c

8 files changed, 78 insertions, 12 deletions

diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index b21e4054c12c..2f22119b4b08 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -779,7 +779,7 @@ struct net_device {
          */
         char                    name[IFNAMSIZ];
 
-        struct pm_qos_request_list *pm_qos_req;
+        struct pm_qos_request_list pm_qos_req;
 
         /* device name hash chain */
         struct hlist_node       name_hlist;
diff --git a/include/linux/plist.h b/include/linux/plist.h
index 6898985e7b38..7254eda078e5 100644
--- a/include/linux/plist.h
+++ b/include/linux/plist.h
@@ -260,6 +260,23 @@ static inline int plist_node_empty(const struct plist_node *node)
 #endif
 
 /**
+ * plist_last_entry - get the struct for the last entry
+ * @head:       the &struct plist_head pointer
+ * @type:       the type of the struct this is embedded in
+ * @member:     the name of the list_struct within the struct
+ */
+#ifdef CONFIG_DEBUG_PI_LIST
+# define plist_last_entry(head, type, member)   \
+({ \
+        WARN_ON(plist_head_empty(head)); \
+        container_of(plist_last(head), type, member); \
+})
+#else
+# define plist_last_entry(head, type, member)   \
+        container_of(plist_last(head), type, member)
+#endif
+
+/**
  * plist_first - return the first node (and thus, highest priority)
  * @head:       the &struct plist_head pointer
  *
@@ -271,4 +288,16 @@ static inline struct plist_node *plist_first(const struct plist_head *head)
                           struct plist_node, plist.node_list);
 }
 
+/**
+ * plist_last - return the last node (and thus, lowest priority)
+ * @head:       the &struct plist_head pointer
+ *
+ * Assumes the plist is _not_ empty.
+ */
+static inline struct plist_node *plist_last(const struct plist_head *head)
+{
+        return list_entry(head->node_list.prev,
+                          struct plist_node, plist.node_list);
+}
+
 #endif
diff --git a/include/linux/pm.h b/include/linux/pm.h
index 8e258c727971..52e8c55ff314 100644
--- a/include/linux/pm.h
+++ b/include/linux/pm.h
@@ -457,6 +457,7 @@ struct dev_pm_info {
 #ifdef CONFIG_PM_SLEEP
         struct list_head        entry;
         struct completion       completion;
+        unsigned long           wakeup_count;
 #endif
 #ifdef CONFIG_PM_RUNTIME
         struct timer_list       suspend_timer;
@@ -476,9 +477,15 @@ struct dev_pm_info {
         enum rpm_request        request;
         enum rpm_status         runtime_status;
         int                     runtime_error;
+        unsigned long           active_jiffies;
+        unsigned long           suspended_jiffies;
+        unsigned long           accounting_timestamp;
 #endif
 };
 
+extern void update_pm_runtime_accounting(struct device *dev);
+
+
 /*
  * The PM_EVENT_ messages are also used by drivers implementing the legacy
  * suspend framework, based on the ->suspend() and ->resume() callbacks common
@@ -552,6 +559,11 @@ extern void __suspend_report_result(const char *function, void *fn, int ret);
         } while (0)
 
 extern void device_pm_wait_for_dev(struct device *sub, struct device *dev);
+
+/* drivers/base/power/wakeup.c */
+extern void pm_wakeup_event(struct device *dev, unsigned int msec);
+extern void pm_stay_awake(struct device *dev);
+extern void pm_relax(void);
 #else /* !CONFIG_PM_SLEEP */
 
 #define device_pm_lock() do {} while (0)
@@ -565,6 +577,10 @@ static inline int dpm_suspend_start(pm_message_t state)
 #define suspend_report_result(fn, ret)          do {} while (0)
 
 static inline void device_pm_wait_for_dev(struct device *a, struct device *b) {}
+
+static inline void pm_wakeup_event(struct device *dev, unsigned int msec) {}
+static inline void pm_stay_awake(struct device *dev) {}
+static inline void pm_relax(void) {}
 #endif /* !CONFIG_PM_SLEEP */
 
 /* How to reorder dpm_list after device_move() */
diff --git a/include/linux/pm_qos_params.h b/include/linux/pm_qos_params.h
index 8ba440e5eb7f..77cbddb3784c 100644
--- a/include/linux/pm_qos_params.h
+++ b/include/linux/pm_qos_params.h
@@ -1,8 +1,10 @@
+#ifndef _LINUX_PM_QOS_PARAMS_H
+#define _LINUX_PM_QOS_PARAMS_H
 /* interface for the pm_qos_power infrastructure of the linux kernel.
  *
  * Mark Gross <mgross@linux.intel.com>
  */
-#include <linux/list.h>
+#include <linux/plist.h>
 #include <linux/notifier.h>
 #include <linux/miscdevice.h>
 
@@ -14,9 +16,12 @@
 #define PM_QOS_NUM_CLASSES 4
 #define PM_QOS_DEFAULT_VALUE -1
 
-struct pm_qos_request_list;
+struct pm_qos_request_list {
+        struct plist_node list;
+        int pm_qos_class;
+};
 
-struct pm_qos_request_list *pm_qos_add_request(int pm_qos_class, s32 value);
+void pm_qos_add_request(struct pm_qos_request_list *l, 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);
@@ -24,4 +29,6 @@ void pm_qos_remove_request(struct pm_qos_request_list *pm_qos_req);
 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);
+int pm_qos_request_active(struct pm_qos_request_list *req);
 
+#endif
diff --git a/include/linux/pm_wakeup.h b/include/linux/pm_wakeup.h
index 22d64c18056c..76aca48722ae 100644
--- a/include/linux/pm_wakeup.h
+++ b/include/linux/pm_wakeup.h
@@ -29,8 +29,11 @@
 
 #ifdef CONFIG_PM
 
-/* changes to device_may_wakeup take effect on the next pm state change.
- * by default, devices should wakeup if they can.
+/* Changes to device_may_wakeup take effect on the next pm state change.
+ *
+ * By default, most devices should leave wakeup disabled.  The exceptions
+ * are devices that everyone expects to be wakeup sources: keyboards,
+ * power buttons, possibly network interfaces, etc.
  */
 static inline void device_init_wakeup(struct device *dev, bool val)
 {
@@ -59,7 +62,7 @@ static inline bool device_may_wakeup(struct device *dev)
 
 #else /* !CONFIG_PM */
 
-/* For some reason the next two routines work even without CONFIG_PM */
+/* For some reason the following routines work even without CONFIG_PM */
 static inline void device_init_wakeup(struct device *dev, bool val)
 {
         dev->power.can_wakeup = val;
@@ -67,6 +70,7 @@ static inline void device_init_wakeup(struct device *dev, bool val)
 
 static inline void device_set_wakeup_capable(struct device *dev, bool capable)
 {
+        dev->power.can_wakeup = capable;
 }
 
 static inline bool device_can_wakeup(struct device *dev)
diff --git a/include/linux/pnp.h b/include/linux/pnp.h
index 7c4193eb0072..1bc1338b817b 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);
 
diff --git a/include/linux/suspend.h b/include/linux/suspend.h
index bc7d6bb4cd8e..4af270ec2204 100644
--- a/include/linux/suspend.h
+++ b/include/linux/suspend.h
@@ -61,14 +61,15 @@ typedef int __bitwise suspend_state_t;
  *      before device drivers' late suspend callbacks are executed.  It returns
  *      0 on success or a negative error code otherwise, in which case the
  *      system cannot enter the desired sleep state (@prepare_late(), @enter(),
- *      @wake(), and @finish() will not be called in that case).
+ *      and @wake() will not be called in that case).
  *
  * @prepare_late: Finish preparing the platform for entering the system sleep
  *      state indicated by @begin().
  *      @prepare_late is called before disabling nonboot CPUs and after
  *      device drivers' late suspend callbacks have been executed.  It returns
  *      0 on success or a negative error code otherwise, in which case the
- *      system cannot enter the desired sleep state (@enter() and @wake()).
+ *      system cannot enter the desired sleep state (@enter() will not be
+ *      executed).
  *
  * @enter: Enter the system sleep state indicated by @begin() or represented by
  *      the argument if @begin() is not implemented.
@@ -81,14 +82,15 @@ typedef int __bitwise suspend_state_t;
  *      resume callbacks are executed.
  *      This callback is optional, but should be implemented by the platforms
  *      that implement @prepare_late().  If implemented, it is always called
- *      after @enter(), even if @enter() fails.
+ *      after @prepare_late and @enter(), even if one of them fails.
  *
  * @finish: Finish wake-up of the platform.
  *      @finish is called right prior to calling device drivers' regular suspend
  *      callbacks.
  *      This callback is optional, but should be implemented by the platforms
  *      that implement @prepare().  If implemented, it is always called after
- *      @enter() and @wake(), if implemented, even if any of them fails.
+ *      @enter() and @wake(), even if any of them fails.  It is executed after
+ *      a failing @prepare.
  *
  * @end: Called by the PM core right after resuming devices, to indicate to
  *      the platform that the system has returned to the working state or
@@ -286,6 +288,13 @@ extern int unregister_pm_notifier(struct notifier_block *nb);
                 { .notifier_call = fn, .priority = pri };       \
         register_pm_notifier(&fn##_nb);                 \
 }
+
+/* drivers/base/power/wakeup.c */
+extern bool events_check_enabled;
+
+extern bool pm_check_wakeup_events(void);
+extern bool pm_get_wakeup_count(unsigned long *count);
+extern bool pm_save_wakeup_count(unsigned long count);
 #else /* !CONFIG_PM_SLEEP */
 
 static inline int register_pm_notifier(struct notifier_block *nb)
diff --git a/include/sound/pcm.h b/include/sound/pcm.h
index dd76cdede64d..6e3a29732dc4 100644
--- a/include/sound/pcm.h
+++ b/include/sound/pcm.h
@@ -366,7 +366,7 @@ struct snd_pcm_substream {
         int number;
         char name[32];                  /* substream name */
         int stream;                     /* stream (direction) */
-        struct pm_qos_request_list *latency_pm_qos_req; /* pm_qos request */
+        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;