Merge 3.15-rc3 into staging-next

8 files changed, 58 insertions, 5 deletions

diff --git a/include/linux/fs.h b/include/linux/fs.h
index 7a9c5bca2b76..878031227c57 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -815,7 +815,7 @@ static inline struct file *get_file(struct file *f)
 #define FL_SLEEP        128     /* A blocking lock */
 #define FL_DOWNGRADE_PENDING    256 /* Lease is being downgraded */
 #define FL_UNLOCK_PENDING       512 /* Lease is being broken */
-#define FL_FILE_PVT     1024    /* lock is private to the file */
+#define FL_OFDLCK       1024    /* lock is "owned" by struct file */
 
 /*
  * Special return value from posix_lock_file() and vfs_lock_file() for
diff --git a/include/linux/interrupt.h b/include/linux/interrupt.h
index c7bfac1c4a7b..8834a7e5b944 100644
--- a/include/linux/interrupt.h
+++ b/include/linux/interrupt.h
@@ -203,7 +203,40 @@ static inline int check_wakeup_irqs(void) { return 0; }
 
 extern cpumask_var_t irq_default_affinity;
 
-extern int irq_set_affinity(unsigned int irq, const struct cpumask *cpumask);
+/* Internal implementation. Use the helpers below */
+extern int __irq_set_affinity(unsigned int irq, const struct cpumask *cpumask,
+                              bool force);
+
+/**
+ * irq_set_affinity - Set the irq affinity of a given irq
+ * @irq:        Interrupt to set affinity
+ * @mask:       cpumask
+ *
+ * Fails if cpumask does not contain an online CPU
+ */
+static inline int
+irq_set_affinity(unsigned int irq, const struct cpumask *cpumask)
+{
+        return __irq_set_affinity(irq, cpumask, false);
+}
+
+/**
+ * irq_force_affinity - Force the irq affinity of a given irq
+ * @irq:        Interrupt to set affinity
+ * @mask:       cpumask
+ *
+ * Same as irq_set_affinity, but without checking the mask against
+ * online cpus.
+ *
+ * Solely for low level cpu hotplug code, where we need to make per
+ * cpu interrupts affine before the cpu becomes online.
+ */
+static inline int
+irq_force_affinity(unsigned int irq, const struct cpumask *cpumask)
+{
+        return __irq_set_affinity(irq, cpumask, true);
+}
+
 extern int irq_can_set_affinity(unsigned int irq);
 extern int irq_select_affinity(unsigned int irq);
 
diff --git a/include/linux/irq.h b/include/linux/irq.h
index d278838908cb..10a0b1ac4ea0 100644
--- a/include/linux/irq.h
+++ b/include/linux/irq.h
@@ -394,7 +394,8 @@ extern void remove_percpu_irq(unsigned int irq, struct irqaction *act);
 
 extern void irq_cpu_online(void);
 extern void irq_cpu_offline(void);
-extern int __irq_set_affinity_locked(struct irq_data *data,  const struct cpumask *cpumask);
+extern int irq_set_affinity_locked(struct irq_data *data,
+                                   const struct cpumask *cpumask, bool force);
 
 #if defined(CONFIG_SMP) && defined(CONFIG_GENERIC_PENDING_IRQ)
 void irq_move_irq(struct irq_data *data);
diff --git a/include/linux/libata.h b/include/linux/libata.h
index 1de36be64df4..5ab4e3a76721 100644
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -822,6 +822,7 @@ struct ata_port {
         unsigned long           qc_allocated;
         unsigned int            qc_active;
         int                     nr_active_links; /* #links with active qcs */
+        unsigned int            last_tag;       /* track next tag hw expects */
 
         struct ata_link         link;           /* host default link */
         struct ata_link         *slave_link;    /* see ata_slave_link_init() */
diff --git a/include/linux/phy/phy.h b/include/linux/phy/phy.h
index e2f5ca96cddc..2760744cb2a7 100644
--- a/include/linux/phy/phy.h
+++ b/include/linux/phy/phy.h
@@ -174,21 +174,29 @@ void devm_of_phy_provider_unregister(struct device *dev,
 #else
 static inline int phy_pm_runtime_get(struct phy *phy)
 {
+        if (!phy)
+                return 0;
         return -ENOSYS;
 }
 
 static inline int phy_pm_runtime_get_sync(struct phy *phy)
 {
+        if (!phy)
+                return 0;
         return -ENOSYS;
 }
 
 static inline int phy_pm_runtime_put(struct phy *phy)
 {
+        if (!phy)
+                return 0;
         return -ENOSYS;
 }
 
 static inline int phy_pm_runtime_put_sync(struct phy *phy)
 {
+        if (!phy)
+                return 0;
         return -ENOSYS;
 }
 
@@ -204,21 +212,29 @@ static inline void phy_pm_runtime_forbid(struct phy *phy)
 
 static inline int phy_init(struct phy *phy)
 {
+        if (!phy)
+                return 0;
         return -ENOSYS;
 }
 
 static inline int phy_exit(struct phy *phy)
 {
+        if (!phy)
+                return 0;
         return -ENOSYS;
 }
 
 static inline int phy_power_on(struct phy *phy)
 {
+        if (!phy)
+                return 0;
         return -ENOSYS;
 }
 
 static inline int phy_power_off(struct phy *phy)
 {
+        if (!phy)
+                return 0;
         return -ENOSYS;
 }
 
diff --git a/include/linux/regulator/consumer.h b/include/linux/regulator/consumer.h
index e530681bea70..1a4a8c157b31 100644
--- a/include/linux/regulator/consumer.h
+++ b/include/linux/regulator/consumer.h
@@ -258,14 +258,14 @@ regulator_get_exclusive(struct device *dev, const char *id)
 static inline struct regulator *__must_check
 regulator_get_optional(struct device *dev, const char *id)
 {
-        return NULL;
+        return ERR_PTR(-ENODEV);
 }
 
 
 static inline struct regulator *__must_check
 devm_regulator_get_optional(struct device *dev, const char *id)
 {
-        return NULL;
+        return ERR_PTR(-ENODEV);
 }
 
 static inline void regulator_put(struct regulator *regulator)
diff --git a/include/linux/serio.h b/include/linux/serio.h
index 36aac733840a..9f779c7a2da4 100644
--- a/include/linux/serio.h
+++ b/include/linux/serio.h
@@ -23,6 +23,7 @@ struct serio {
 
         char name[32];
         char phys[32];
+        char firmware_id[128];
 
         bool manual_bind;
 
diff --git a/include/linux/tty.h b/include/linux/tty.h
index 1c3316a47d7e..036cccd80d9f 100644
--- a/include/linux/tty.h
+++ b/include/linux/tty.h
@@ -61,6 +61,7 @@ struct tty_bufhead {
         struct tty_buffer *head;        /* Queue head */
         struct work_struct work;
         struct mutex       lock;
+        spinlock_t         flush_lock;
         atomic_t           priority;
         struct tty_buffer sentinel;
         struct llist_head free;         /* Free queue head */