ACPI / dock: Simplify dock_init_hotplug() and dock_release_hotplug()
Make dock_init_hotplug() and dock_release_hotplug() slightly simpler
and move some checks in those functions to the code paths where they
are needed.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Yinghai Lu <yinghai@kernel.org>
diff --git a/drivers/acpi/dock.c b/drivers/acpi/dock.c
index 41c5d04..b1170d6 100644
--- a/drivers/acpi/dock.c
+++ b/drivers/acpi/dock.c
@@ -130,19 +130,16 @@
int ret = 0;
mutex_lock(&hotplug_lock);
-
- if (dd->hp_context) {
+ if (WARN_ON(dd->hp_context)) {
ret = -EEXIST;
} else {
dd->hp_refcount = 1;
dd->hp_ops = ops;
dd->hp_context = context;
dd->hp_release = release;
+ if (init)
+ init(context);
}
-
- if (!WARN_ON(ret) && init)
- init(context);
-
mutex_unlock(&hotplug_lock);
return ret;
}
@@ -157,22 +154,17 @@
*/
static void dock_release_hotplug(struct dock_dependent_device *dd)
{
- void (*release)(void *) = NULL;
- void *context = NULL;
-
mutex_lock(&hotplug_lock);
-
if (dd->hp_context && !--dd->hp_refcount) {
+ void (*release)(void *) = dd->hp_release;
+ void *context = dd->hp_context;
+
dd->hp_ops = NULL;
- context = dd->hp_context;
dd->hp_context = NULL;
- release = dd->hp_release;
dd->hp_release = NULL;
+ if (release)
+ release(context);
}
-
- if (release && context)
- release(context);
-
mutex_unlock(&hotplug_lock);
}