rtc: don't use __exit_p to wrap ds1302_rtc_remove

[safe/jmp/linux-2.6] / drivers / base / driver.c

diff --git a/drivers/base/driver.c b/drivers/base/driver.c
index c51f11b..f367885 100644 (file)
--- a/drivers/base/driver.c
+++ b/drivers/base/driver.c
@@ -181,7 +181,7 @@ void put_driver(struct device_driver *drv)
 EXPORT_SYMBOL_GPL(put_driver);
 
 static int driver_add_groups(struct device_driver *drv,
-                            struct attribute_group **groups)
+                            const struct attribute_group **groups)
 {
        int error = 0;
        int i;
@@ -201,7 +201,7 @@ static int driver_add_groups(struct device_driver *drv,
 }
 
 static void driver_remove_groups(struct device_driver *drv,
-                                struct attribute_group **groups)
+                                const struct attribute_group **groups)
 {
        int i;
 
@@ -236,7 +236,7 @@ int driver_register(struct device_driver *drv)
                put_driver(other);
                printk(KERN_ERR "Error: Driver '%s' is already registered, "
                        "aborting...\n", drv->name);
-               return -EEXIST;
+               return -EBUSY;
        }
 
        ret = bus_add_driver(drv);
@@ -257,6 +257,10 @@ EXPORT_SYMBOL_GPL(driver_register);
  */
 void driver_unregister(struct device_driver *drv)
 {
+       if (!drv || !drv->p) {
+               WARN(1, "Unexpected driver unregister!\n");
+               return;
+       }
        driver_remove_groups(drv, drv->groups);
        bus_remove_driver(drv);
 }