Merge branch 'pm-fixes' into pm-domains

Merge commit e8b364b88cc4001b21c28c1ecf1e1e3ffbe162e6
(PM / Clocks: Do not acquire a mutex under a spinlock) fixing
a regression in drivers/base/power/clock_ops.c.

Conflicts:
	drivers/base/power/clock_ops.c

6 files changed, 49 insertions, 48 deletions

diff --git a/drivers/base/devres.c b/drivers/base/devres.c
index cf7a0c788052..65cd74832450 100644
--- a/drivers/base/devres.c
+++ b/drivers/base/devres.c
@@ -397,6 +397,7 @@ static int remove_nodes(struct device *dev,
 
 static int release_nodes(struct device *dev, struct list_head *first,
                          struct list_head *end, unsigned long flags)
+        __releases(&dev->devres_lock)
 {
         LIST_HEAD(todo);
         int cnt;
diff --git a/drivers/base/devtmpfs.c b/drivers/base/devtmpfs.c
index 33e1bed68fdd..a4760e095ff5 100644
--- a/drivers/base/devtmpfs.c
+++ b/drivers/base/devtmpfs.c
@@ -376,7 +376,7 @@ int devtmpfs_mount(const char *mntdir)
         return err;
 }
 
-static __initdata DECLARE_COMPLETION(setup_done);
+static DECLARE_COMPLETION(setup_done);
 
 static int handle(const char *name, mode_t mode, struct device *dev)
 {
diff --git a/drivers/base/firmware_class.c b/drivers/base/firmware_class.c
index bbb03e6f7255..06ed6b4e7df5 100644
--- a/drivers/base/firmware_class.c
+++ b/drivers/base/firmware_class.c
@@ -521,11 +521,6 @@ static int _request_firmware(const struct firmware **firmware_p,
         if (!firmware_p)
                 return -EINVAL;
 
-        if (WARN_ON(usermodehelper_is_disabled())) {
-                dev_err(device, "firmware: %s will not be loaded\n", name);
-                return -EBUSY;
-        }
-
         *firmware_p = firmware = kzalloc(sizeof(*firmware), GFP_KERNEL);
         if (!firmware) {
                 dev_err(device, "%s: kmalloc(struct firmware) failed\n",
@@ -539,6 +534,12 @@ static int _request_firmware(const struct firmware **firmware_p,
                 return 0;
         }
 
+        if (WARN_ON(usermodehelper_is_disabled())) {
+                dev_err(device, "firmware: %s will not be loaded\n", name);
+                retval = -EBUSY;
+                goto out;
+        }
+
         if (uevent)
                 dev_dbg(device, "firmware: requesting %s\n", name);
 
diff --git a/drivers/base/platform.c b/drivers/base/platform.c
index 0cad9c7f6bb5..99a5272d7c2f 100644
--- a/drivers/base/platform.c
+++ b/drivers/base/platform.c
@@ -33,7 +33,7 @@ EXPORT_SYMBOL_GPL(platform_bus);
 
 /**
  * arch_setup_pdev_archdata - Allow manipulation of archdata before its used
- * @dev: platform device
+ * @pdev: platform device
  *
  * This is called before platform_device_add() such that any pdev_archdata may
  * be setup before the platform_notifier is called.  So if a user needs to
diff --git a/drivers/base/power/clock_ops.c b/drivers/base/power/clock_ops.c
index cb44b58d6813..b876e60a53ef 100644
--- a/drivers/base/power/clock_ops.c
+++ b/drivers/base/power/clock_ops.c
@@ -32,6 +32,22 @@ struct pm_clock_entry {
 };
 
 /**
+ * pm_clk_acquire - Acquire a device clock.
+ * @dev: Device whose clock is to be acquired.
+ * @ce: PM clock entry corresponding to the clock.
+ */
+static void pm_clk_acquire(struct device *dev, struct pm_clock_entry *ce)
+{
+        ce->clk = clk_get(dev, ce->con_id);
+        if (IS_ERR(ce->clk)) {
+                ce->status = PCE_STATUS_ERROR;
+        } else {
+                ce->status = PCE_STATUS_ACQUIRED;
+                dev_dbg(dev, "Clock %s managed by runtime PM.\n", ce->con_id);
+        }
+}
+
+/**
  * pm_clk_add - Start using a device clock for power management.
  * @dev: Device whose clock is going to be used for power management.
  * @con_id: Connection ID of the clock.
@@ -63,6 +79,8 @@ int pm_clk_add(struct device *dev, const char *con_id)
                 }
         }
 
+        pm_clk_acquire(dev, ce);
+
         spin_lock_irq(&psd->lock);
         list_add_tail(&ce->node, &psd->clock_list);
         spin_unlock_irq(&psd->lock);
@@ -72,17 +90,12 @@ int pm_clk_add(struct device *dev, const char *con_id)
 /**
  * __pm_clk_remove - Destroy PM clock entry.
  * @ce: PM clock entry to destroy.
- *
- * This routine must be called under the spinlock protecting the PM list of
- * clocks corresponding the the @ce's device.
  */
 static void __pm_clk_remove(struct pm_clock_entry *ce)
 {
         if (!ce)
                 return;
 
-        list_del(&ce->node);
-
         if (ce->status < PCE_STATUS_ERROR) {
                 if (ce->status == PCE_STATUS_ENABLED)
                         clk_disable(ce->clk);
@@ -116,18 +129,22 @@ void pm_clk_remove(struct device *dev, const char *con_id)
         spin_lock_irq(&psd->lock);
 
         list_for_each_entry(ce, &psd->clock_list, node) {
-                if (!con_id && !ce->con_id) {
-                        __pm_clk_remove(ce);
-                        break;
-                } else if (!con_id || !ce->con_id) {
+                if (!con_id && !ce->con_id)
+                        goto remove;
+                else if (!con_id || !ce->con_id)
                         continue;
-                } else if (!strcmp(con_id, ce->con_id)) {
-                        __pm_clk_remove(ce);
-                        break;
-                }
+                else if (!strcmp(con_id, ce->con_id))
+                        goto remove;
         }
 
         spin_unlock_irq(&psd->lock);
+        return;
+
+ remove:
+        list_del(&ce->node);
+        spin_unlock_irq(&psd->lock);
+
+        __pm_clk_remove(ce);
 }
 
 /**
@@ -169,18 +186,26 @@ void pm_clk_destroy(struct device *dev)
 {
         struct pm_subsys_data *psd = dev_to_psd(dev);
         struct pm_clock_entry *ce, *c;
+        struct list_head list;
 
         if (!psd)
                 return;
 
+        INIT_LIST_HEAD(&list);
+
         spin_lock_irq(&psd->lock);
 
         list_for_each_entry_safe_reverse(ce, c, &psd->clock_list, node)
-                __pm_clk_remove(ce);
+                list_move(&ce->node, &list);
 
         spin_unlock_irq(&psd->lock);
 
         dev_pm_put_subsys_data(dev);
+
+        list_for_each_entry_safe_reverse(ce, c, &list, node) {
+                list_del(&ce->node);
+                __pm_clk_remove(ce);
+        }
 }
 
 #endif /* CONFIG_PM */
@@ -188,23 +213,6 @@ void pm_clk_destroy(struct device *dev)
 #ifdef CONFIG_PM_RUNTIME
 
 /**
- * pm_clk_acquire - Acquire a device clock.
- * @dev: Device whose clock is to be acquired.
- * @con_id: Connection ID of the clock.
- */
-static void pm_clk_acquire(struct device *dev,
-                                    struct pm_clock_entry *ce)
-{
-        ce->clk = clk_get(dev, ce->con_id);
-        if (IS_ERR(ce->clk)) {
-                ce->status = PCE_STATUS_ERROR;
-        } else {
-                ce->status = PCE_STATUS_ACQUIRED;
-                dev_dbg(dev, "Clock %s managed by runtime PM.\n", ce->con_id);
-        }
-}
-
-/**
  * pm_clk_suspend - Disable clocks in a device's PM clock list.
  * @dev: Device to disable the clocks for.
  */
@@ -222,9 +230,6 @@ int pm_clk_suspend(struct device *dev)
         spin_lock_irqsave(&psd->lock, flags);
 
         list_for_each_entry_reverse(ce, &psd->clock_list, node) {
-                if (ce->status == PCE_STATUS_NONE)
-                        pm_clk_acquire(dev, ce);
-
                 if (ce->status < PCE_STATUS_ERROR) {
                         clk_disable(ce->clk);
                         ce->status = PCE_STATUS_ACQUIRED;
@@ -254,9 +259,6 @@ int pm_clk_resume(struct device *dev)
         spin_lock_irqsave(&psd->lock, flags);
 
         list_for_each_entry(ce, &psd->clock_list, node) {
-                if (ce->status == PCE_STATUS_NONE)
-                        pm_clk_acquire(dev, ce);
-
                 if (ce->status < PCE_STATUS_ERROR) {
                         clk_enable(ce->clk);
                         ce->status = PCE_STATUS_ENABLED;
diff --git a/drivers/base/regmap/regmap.c b/drivers/base/regmap/regmap.c
index 0eef4da1ac61..20663f8dae45 100644
--- a/drivers/base/regmap/regmap.c
+++ b/drivers/base/regmap/regmap.c
@@ -168,13 +168,11 @@ struct regmap *regmap_init(struct device *dev,
         map->work_buf = kmalloc(map->format.buf_size, GFP_KERNEL);
         if (map->work_buf == NULL) {
                 ret = -ENOMEM;
-                goto err_bus;
+                goto err_map;
         }
 
         return map;
 
-err_bus:
-        module_put(map->bus->owner);
 err_map:
         kfree(map);
 err:
@@ -188,7 +186,6 @@ EXPORT_SYMBOL_GPL(regmap_init);
 void regmap_exit(struct regmap *map)
 {
         kfree(map->work_buf);
-        module_put(map->bus->owner);
         kfree(map);
 }
 EXPORT_SYMBOL_GPL(regmap_exit);