6 files changed, 89 insertions, 20 deletions

diff --git a/drivers/base/core.c b/drivers/base/core.c
index 1977d4beb89e..7ecb1938e590 100644
--- a/drivers/base/core.c
+++ b/drivers/base/core.c
@@ -22,6 +22,7 @@
 #include <linux/kallsyms.h>
 #include <linux/semaphore.h>
 #include <linux/mutex.h>
+#include <linux/async.h>
 
 #include "base.h"
 #include "power/power.h"
@@ -161,10 +162,18 @@ static int dev_uevent(struct kset *kset, struct kobject *kobj,
         struct device *dev = to_dev(kobj);
         int retval = 0;
 
-        /* add the major/minor if present */
+        /* add device node properties if present */
         if (MAJOR(dev->devt)) {
+                const char *tmp;
+                const char *name;
+
                 add_uevent_var(env, "MAJOR=%u", MAJOR(dev->devt));
                 add_uevent_var(env, "MINOR=%u", MINOR(dev->devt));
+                name = device_get_nodename(dev, &tmp);
+                if (name) {
+                        add_uevent_var(env, "DEVNAME=%s", name);
+                        kfree(tmp);
+                }
         }
 
         if (dev->type && dev->type->name)
@@ -874,7 +883,7 @@ int device_add(struct device *dev)
          * the name, and force the use of dev_name()
          */
         if (dev->init_name) {
-                dev_set_name(dev, dev->init_name);
+                dev_set_name(dev, "%s", dev->init_name);
                 dev->init_name = NULL;
         }
 
@@ -1128,6 +1137,47 @@ static struct device *next_device(struct klist_iter *i)
 }
 
 /**
+ * device_get_nodename - path of device node file
+ * @dev: device
+ * @tmp: possibly allocated string
+ *
+ * Return the relative path of a possible device node.
+ * Non-default names may need to allocate a memory to compose
+ * a name. This memory is returned in tmp and needs to be
+ * freed by the caller.
+ */
+const char *device_get_nodename(struct device *dev, const char **tmp)
+{
+        char *s;
+
+        *tmp = NULL;
+
+        /* the device type may provide a specific name */
+        if (dev->type && dev->type->nodename)
+                *tmp = dev->type->nodename(dev);
+        if (*tmp)
+                return *tmp;
+
+        /* the class may provide a specific name */
+        if (dev->class && dev->class->nodename)
+                *tmp = dev->class->nodename(dev);
+        if (*tmp)
+                return *tmp;
+
+        /* return name without allocation, tmp == NULL */
+        if (strchr(dev_name(dev), '!') == NULL)
+                return dev_name(dev);
+
+        /* replace '!' in the name with '/' */
+        *tmp = kstrdup(dev_name(dev), GFP_KERNEL);
+        if (!*tmp)
+                return NULL;
+        while ((s = strchr(*tmp, '!')))
+                s[0] = '/';
+        return *tmp;
+}
+
+/**
  * device_for_each_child - device child iterator.
  * @parent: parent struct device.
  * @data: data for the callback.
@@ -1271,7 +1321,7 @@ struct device *__root_device_register(const char *name, struct module *owner)
         if (!root)
                 return ERR_PTR(err);
 
-        err = dev_set_name(&root->dev, name);
+        err = dev_set_name(&root->dev, "%s", name);
         if (err) {
                 kfree(root);
                 return ERR_PTR(err);
@@ -1665,4 +1715,5 @@ void device_shutdown(void)
         kobject_put(sysfs_dev_char_kobj);
         kobject_put(sysfs_dev_block_kobj);
         kobject_put(dev_kobj);
+        async_synchronize_full();
 }
diff --git a/drivers/base/dd.c b/drivers/base/dd.c
index 742cbe6b042b..f0106875f01d 100644
--- a/drivers/base/dd.c
+++ b/drivers/base/dd.c
@@ -226,7 +226,7 @@ static int __device_attach(struct device_driver *drv, void *data)
  * pair is found, break out and return.
  *
  * Returns 1 if the device was bound to a driver;
- * 0 if no matching device was found;
+ * 0 if no matching driver was found;
  * -ENODEV if the device is not registered.
  *
  * When called for a USB interface, @dev->parent->sem must be held.
@@ -320,6 +320,10 @@ static void __device_release_driver(struct device *dev)
                 devres_release_all(dev);
                 dev->driver = NULL;
                 klist_remove(&dev->p->knode_driver);
+                if (dev->bus)
+                        blocking_notifier_call_chain(&dev->bus->p->bus_notifier,
+                                                     BUS_NOTIFY_UNBOUND_DRIVER,
+                                                     dev);
         }
 }
 
diff --git a/drivers/base/firmware_class.c b/drivers/base/firmware_class.c
index 8a267c427629..ddeb819c8f87 100644
--- a/drivers/base/firmware_class.c
+++ b/drivers/base/firmware_class.c
@@ -40,7 +40,7 @@ static int loading_timeout = 60;	/* In seconds */
 static DEFINE_MUTEX(fw_lock);
 
 struct firmware_priv {
-        char fw_id[FIRMWARE_NAME_MAX];
+        char *fw_id;
         struct completion completion;
         struct bin_attribute attr_data;
         struct firmware *fw;
@@ -355,8 +355,9 @@ static void fw_dev_release(struct device *dev)
         for (i = 0; i < fw_priv->nr_pages; i++)
                 __free_page(fw_priv->pages[i]);
         kfree(fw_priv->pages);
+        kfree(fw_priv->fw_id);
         kfree(fw_priv);
-        kfree(dev);
+        put_device(dev);
 
         module_put(THIS_MODULE);
 }
@@ -386,13 +387,19 @@ static int fw_register_device(struct device **dev_p, const char *fw_name,
 
         init_completion(&fw_priv->completion);
         fw_priv->attr_data = firmware_attr_data_tmpl;
-        strlcpy(fw_priv->fw_id, fw_name, FIRMWARE_NAME_MAX);
+        fw_priv->fw_id = kstrdup(fw_name, GFP_KERNEL);
+        if (!fw_priv->fw_id) {
+                dev_err(device, "%s: Firmware name allocation failed\n",
+                        __func__);
+                retval = -ENOMEM;
+                goto error_kfree;
+        }
 
         fw_priv->timeout.function = firmware_class_timeout;
         fw_priv->timeout.data = (u_long) fw_priv;
         init_timer(&fw_priv->timeout);
 
-        dev_set_name(f_dev, dev_name(device));
+        dev_set_name(f_dev, "%s", dev_name(device));
         f_dev->parent = device;
         f_dev->class = &firmware_class;
         dev_set_drvdata(f_dev, fw_priv);
@@ -400,14 +407,17 @@ static int fw_register_device(struct device **dev_p, const char *fw_name,
         retval = device_register(f_dev);
         if (retval) {
                 dev_err(device, "%s: device_register failed\n", __func__);
-                goto error_kfree;
+                put_device(f_dev);
+                goto error_kfree_fw_id;
         }
         *dev_p = f_dev;
         return 0;
 
+error_kfree_fw_id:
+        kfree(fw_priv->fw_id);
 error_kfree:
-        kfree(fw_priv);
         kfree(f_dev);
+        kfree(fw_priv);
         return retval;
 }
 
@@ -615,8 +625,9 @@ request_firmware_work_func(void *arg)
  * @cont: function will be called asynchronously when the firmware
  *      request is over.
  *
- *      Asynchronous variant of request_firmware() for contexts where
- *      it is not possible to sleep.
+ *      Asynchronous variant of request_firmware() for user contexts where
+ *      it is not possible to sleep for long time. It can't be called
+ *      in atomic contexts.
  **/
 int
 request_firmware_nowait(
diff --git a/drivers/base/node.c b/drivers/base/node.c
index 40b809742a1c..91d4087b4039 100644
--- a/drivers/base/node.c
+++ b/drivers/base/node.c
@@ -72,10 +72,8 @@ static ssize_t node_read_meminfo(struct sys_device * dev,
                        "Node %d Inactive(anon): %8lu kB\n"
                        "Node %d Active(file):   %8lu kB\n"
                        "Node %d Inactive(file): %8lu kB\n"
-#ifdef CONFIG_UNEVICTABLE_LRU
                        "Node %d Unevictable:    %8lu kB\n"
                        "Node %d Mlocked:        %8lu kB\n"
-#endif
 #ifdef CONFIG_HIGHMEM
                        "Node %d HighTotal:      %8lu kB\n"
                        "Node %d HighFree:       %8lu kB\n"
@@ -105,10 +103,8 @@ static ssize_t node_read_meminfo(struct sys_device * dev,
                        nid, K(node_page_state(nid, NR_INACTIVE_ANON)),
                        nid, K(node_page_state(nid, NR_ACTIVE_FILE)),
                        nid, K(node_page_state(nid, NR_INACTIVE_FILE)),
-#ifdef CONFIG_UNEVICTABLE_LRU
                        nid, K(node_page_state(nid, NR_UNEVICTABLE)),
                        nid, K(node_page_state(nid, NR_MLOCK)),
-#endif
 #ifdef CONFIG_HIGHMEM
                        nid, K(i.totalhigh),
                        nid, K(i.freehigh),
diff --git a/drivers/base/platform.c b/drivers/base/platform.c
index ead3f64c41d0..81cb01bfc356 100644
--- a/drivers/base/platform.c
+++ b/drivers/base/platform.c
@@ -69,7 +69,8 @@ EXPORT_SYMBOL_GPL(platform_get_irq);
  * @name: resource name
  */
 struct resource *platform_get_resource_byname(struct platform_device *dev,
-                                              unsigned int type, char *name)
+                                              unsigned int type,
+                                              const char *name)
 {
         int i;
 
@@ -88,7 +89,7 @@ EXPORT_SYMBOL_GPL(platform_get_resource_byname);
  * @dev: platform device
  * @name: IRQ name
  */
-int platform_get_irq_byname(struct platform_device *dev, char *name)
+int platform_get_irq_byname(struct platform_device *dev, const char *name)
 {
         struct resource *r = platform_get_resource_byname(dev, IORESOURCE_IRQ,
                                                           name);
@@ -244,7 +245,7 @@ int platform_device_add(struct platform_device *pdev)
         if (pdev->id != -1)
                 dev_set_name(&pdev->dev, "%s.%d", pdev->name,  pdev->id);
         else
-                dev_set_name(&pdev->dev, pdev->name);
+                dev_set_name(&pdev->dev, "%s", pdev->name);
 
         for (i = 0; i < pdev->num_resources; i++) {
                 struct resource *p, *r = &pdev->resource[i];
diff --git a/drivers/base/sys.c b/drivers/base/sys.c
index 9742a78c9fe4..79a9ae5238ac 100644
--- a/drivers/base/sys.c
+++ b/drivers/base/sys.c
@@ -131,6 +131,8 @@ static struct kset *system_kset;
 
 int sysdev_class_register(struct sysdev_class *cls)
 {
+        int retval;
+
         pr_debug("Registering sysdev class '%s'\n", cls->name);
 
         INIT_LIST_HEAD(&cls->drivers);
@@ -138,7 +140,11 @@ int sysdev_class_register(struct sysdev_class *cls)
         cls->kset.kobj.parent = &system_kset->kobj;
         cls->kset.kobj.ktype = &ktype_sysdev_class;
         cls->kset.kobj.kset = system_kset;
-        kobject_set_name(&cls->kset.kobj, cls->name);
+
+        retval = kobject_set_name(&cls->kset.kobj, "%s", cls->name);
+        if (retval)
+                return retval;
+
         return kset_register(&cls->kset);
 }