X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=drivers%2Fbase%2Fdriver.c;h=2ef5acf4368b9e8deef4440d865a87cef8d0b0a6;hb=676056132425ac425d7215cdaa8bd25582e07966;hp=bf31a0170a486b08dd61827fa1baef4f58c8df7c;hpb=7199677d2e919edc75d1fb8856c98cd0c1bbcfc5;p=linux-2.6

diff --git a/drivers/base/driver.c b/drivers/base/driver.c
index bf31a0170a..2ef5acf436 100644
--- a/drivers/base/driver.c
+++ b/drivers/base/driver.c
@@ -133,6 +133,7 @@ int driver_add_kobj(struct device_driver *drv, struct kobject *kobj,
 {
 	va_list args;
 	char *name;
+	int ret;
 
 	va_start(args, fmt);
 	name = kvasprintf(GFP_KERNEL, fmt, args);
@@ -141,7 +142,9 @@ int driver_add_kobj(struct device_driver *drv, struct kobject *kobj,
 	if (!name)
 		return -ENOMEM;
 
-	return kobject_add(kobj, &drv->p->kobj, "%s", name);
+	ret = kobject_add(kobj, &drv->p->kobj, "%s", name);
+	kfree(name);
+	return ret;
 }
 EXPORT_SYMBOL_GPL(driver_add_kobj);
 
@@ -214,12 +217,22 @@ static void driver_remove_groups(struct device_driver *drv,
 int driver_register(struct device_driver *drv)
 {
 	int ret;
+	struct device_driver *other;
 
 	if ((drv->bus->probe && drv->probe) ||
 	    (drv->bus->remove && drv->remove) ||
 	    (drv->bus->shutdown && drv->shutdown))
 		printk(KERN_WARNING "Driver '%s' needs updating - please use "
 			"bus_type methods\n", drv->name);
+
+	other = driver_find(drv->name, drv->bus);
+	if (other) {
+		put_driver(other);
+		printk(KERN_ERR "Error: Driver '%s' is already registered, "
+			"aborting...\n", drv->name);
+		return -EEXIST;
+	}
+
 	ret = bus_add_driver(drv);
 	if (ret)
 		return ret;