Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6

4 files changed, 62 insertions, 16 deletions

diff --git a/include/linux/eventfd.h b/include/linux/eventfd.h
index 0d6ecc6..b489fc6 100644
--- a/include/linux/eventfd.h
+++ b/include/linux/eventfd.h
@@ -19,7 +19,8 @@ int eventfd_signal(struct file *file, int n);
 #else /* CONFIG_EVENTFD */
 
 #define eventfd_fget(fd) ERR_PTR(-ENOSYS)
-#define eventfd_signal(f, n) 0
+static inline int eventfd_signal(struct file *file, int n)
+{ return 0; }
 
 #endif /* CONFIG_EVENTFD */
 
diff --git a/include/linux/pci.h b/include/linux/pci.h
index fbf3766..086a0e5 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -748,6 +748,17 @@ static inline void pci_release_regions(struct pci_dev *dev) { }
 static inline void pci_block_user_cfg_access(struct pci_dev *dev) { }
 static inline void pci_unblock_user_cfg_access(struct pci_dev *dev) { }
 
+static inline struct pci_bus *pci_find_next_bus(const struct pci_bus *from)
+{ return NULL; }
+
+static inline struct pci_dev *pci_get_slot(struct pci_bus *bus,
+						unsigned int devfn)
+{ return NULL; }
+
+static inline struct pci_dev *pci_get_bus_and_slot(unsigned int bus,
+						unsigned int devfn)
+{ return NULL; }
+
 #endif /* CONFIG_PCI */
 
 /* Include architecture-dependent settings and functions */
diff --git a/include/linux/pm.h b/include/linux/pm.h
index 87545e0..b2c4fde 100644
--- a/include/linux/pm.h
+++ b/include/linux/pm.h
@@ -110,37 +110,67 @@ typedef int __bitwise suspend_state_t;
 #define PM_SUSPEND_MAX		((__force suspend_state_t) 4)
 
 /**
- * struct pm_ops - Callbacks for managing platform dependent suspend states.
- * @valid: Callback to determine whether the given state can be entered.
- *	Valid states are advertised in /sys/power/state but can still
- *	be rejected by prepare or enter if the conditions aren't right.
- *	There is a %pm_valid_only_mem function available that can be assigned
- *	to this if you only implement mem sleep.
+ * struct pm_ops - Callbacks for managing platform dependent system sleep
+ *	states.
  *
- * @prepare: Prepare the platform for the given suspend state. Can return a
- *	negative error code if necessary.
+ * @valid: Callback to determine if given system sleep state is supported by
+ *	the platform.
+ *	Valid (ie. supported) states are advertised in /sys/power/state.  Note
+ *	that it still may be impossible to enter given system sleep state if the
+ *	conditions aren't right.
+ *	There is the %pm_valid_only_mem function available that can be assigned
+ *	to this if the platform only supports mem sleep.
  *
- * @enter: Enter the given suspend state, must be assigned. Can return a
- *	negative error code if necessary.
+ * @set_target: Tell the platform which system sleep state is going to be
+ *	entered.
+ *	@set_target() is executed right prior to suspending devices.  The
+ *	information conveyed to the platform code by @set_target() should be
+ *	disregarded by the platform as soon as @finish() is executed and if
+ *	@prepare() fails.  If @set_target() fails (ie. returns nonzero),
+ *	@prepare(), @enter() and @finish() will not be called by the PM core.
+ *	This callback is optional.  However, if it is implemented, the argument
+ *	passed to @prepare(), @enter() and @finish() is meaningless and should
+ *	be ignored.
  *
- * @finish: Called when the system has left the given state and all devices
- *	are resumed. The return value is ignored.
+ * @prepare: Prepare the platform for entering the system sleep state indicated
+ *	by @set_target() or represented by the argument if @set_target() is not
+ *	implemented.
+ *	@prepare() is called right after devices have been suspended (ie. the
+ *	appropriate .suspend() method has been executed for each device) and
+ *	before the nonboot CPUs are disabled (it is executed with IRQs enabled).
+ *	This callback is optional.  It returns 0 on success or a negative
+ *	error code otherwise, in which case the system cannot enter the desired
+ *	sleep state (@enter() and @finish() will not be called in that case).
+ *
+ * @enter: Enter the system sleep state indicated by @set_target() or
+ *	represented by the argument if @set_target() is not implemented.
+ *	This callback is mandatory.  It returns 0 on success or a negative
+ *	error code otherwise, in which case the system cannot enter the desired
+ *	sleep state.
+ *
+ * @finish: Called when the system has just left a sleep state, right after
+ *	the nonboot CPUs have been enabled and before devices are resumed (it is
+ *	executed with IRQs enabled).  If @set_target() is not implemented, the
+ *	argument represents the sleep state being left.
+ *	This callback is optional, but should be implemented by the platforms
+ *	that implement @prepare().  If implemented, it is always called after
+ *	@enter() (even if @enter() fails).
  */
 struct pm_ops {
 	int (*valid)(suspend_state_t state);
+	int (*set_target)(suspend_state_t state);
 	int (*prepare)(suspend_state_t state);
 	int (*enter)(suspend_state_t state);
 	int (*finish)(suspend_state_t state);
 };
 
+extern struct pm_ops *pm_ops;
+
 /**
  * pm_set_ops - set platform dependent power management ops
  * @pm_ops: The new power management operations to set.
  */
 extern void pm_set_ops(struct pm_ops *pm_ops);
-extern struct pm_ops *pm_ops;
-extern int pm_suspend(suspend_state_t state);
-
 extern int pm_valid_only_mem(suspend_state_t state);
 
 /**
@@ -161,6 +191,8 @@ extern void arch_suspend_disable_irqs(void);
  */
 extern void arch_suspend_enable_irqs(void);
 
+extern int pm_suspend(suspend_state_t state);
+
 /*
  * Device power management
  */
diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h
index b02070e..83d0ec1 100644
--- a/include/linux/syscalls.h
+++ b/include/linux/syscalls.h
@@ -598,6 +598,8 @@ asmlinkage long sys_tee(int fdin, int fdout, size_t len, unsigned int flags);
 
 asmlinkage long sys_sync_file_range(int fd, loff_t offset, loff_t nbytes,
 					unsigned int flags);
+asmlinkage long sys_sync_file_range2(int fd, unsigned int flags,
+				     loff_t offset, loff_t nbytes);
 asmlinkage long sys_get_robust_list(int pid,
 				    struct robust_list_head __user * __user *head_ptr,
 				    size_t __user *len_ptr);