Merge git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild

[linux-2.6-omap-h63xx.git] / drivers / base / core.c

diff --git a/drivers/base/core.c b/drivers/base/core.c
index b1727876182cdff178550856fc0696a770db9bdc..9c0070b5bd3e75d828a44d405dca4695b70e6ef6 100644 (file)
--- a/drivers/base/core.c
+++ b/drivers/base/core.c
@@ -423,10 +423,8 @@ struct kset *devices_kset;
 int device_create_file(struct device *dev, struct device_attribute *attr)
 {
        int error = 0;
-       if (get_device(dev)) {
+       if (dev)
                error = sysfs_create_file(&dev->kobj, &attr->attr);
-               put_device(dev);
-       }
        return error;
 }
 
@@ -437,10 +435,8 @@ int device_create_file(struct device *dev, struct device_attribute *attr)
  */
 void device_remove_file(struct device *dev, struct device_attribute *attr)
 {
-       if (get_device(dev)) {
+       if (dev)
                sysfs_remove_file(&dev->kobj, &attr->attr);
-               put_device(dev);
-       }
 }
 
 /**
@@ -1144,25 +1140,11 @@ error:
 }
 EXPORT_SYMBOL_GPL(device_create);
 
-/**
- * find_device - finds a device that was created with device_create()
- * @class: pointer to the struct class that this device was registered with
- * @devt: the dev_t of the device that was previously registered
- */
-static struct device *find_device(struct class *class, dev_t devt)
+static int __match_devt(struct device *dev, void *data)
 {
-       struct device *dev = NULL;
-       struct device *dev_tmp;
+       dev_t *devt = data;
 
-       down(&class->sem);
-       list_for_each_entry(dev_tmp, &class->devices, node) {
-               if (dev_tmp->devt == devt) {
-                       dev = dev_tmp;
-                       break;
-               }
-       }
-       up(&class->sem);
-       return dev;
+       return dev->devt == *devt;
 }
 
 /**
@@ -1177,9 +1159,11 @@ void device_destroy(struct class *class, dev_t devt)
 {
        struct device *dev;
 
-       dev = find_device(class, devt);
-       if (dev)
+       dev = class_find_device(class, &devt, __match_devt);
+       if (dev) {
+               put_device(dev);
                device_unregister(dev);
+       }
 }
 EXPORT_SYMBOL_GPL(device_destroy);
 
@@ -1203,9 +1187,11 @@ void destroy_suspended_device(struct class *class, dev_t devt)
 {
        struct device *dev;
 
-       dev = find_device(class, devt);
-       if (dev)
+       dev = class_find_device(class, &devt, __match_devt);
+       if (dev) {
                device_pm_schedule_removal(dev);
+               put_device(dev);
+       }
 }
 EXPORT_SYMBOL_GPL(destroy_suspended_device);
 #endif /* CONFIG_PM_SLEEP */