bitmap: Add bitmap_alloc(), bitmap_zalloc() and bitmap_free()

[mirror_ubuntu-bionic-kernel.git] / lib / logic_pio.c

diff --git a/lib/logic_pio.c b/lib/logic_pio.c
index d0165c88f705b193937606d174201ae3ec2722b7..905027574e5d8041d1394dc4e5582061ed084e2f 100644 (file)
--- a/lib/logic_pio.c
+++ b/lib/logic_pio.c
@@ -98,6 +98,20 @@ end_register:
        return ret;
 }
 
+/**
+ * logic_pio_unregister_range - unregister a logical PIO range for a host
+ * @range: pointer to the IO range which has been already registered.
+ *
+ * Unregister a previously-registered IO range node.
+ */
+void logic_pio_unregister_range(struct logic_pio_hwaddr *range)
+{
+       mutex_lock(&io_range_mutex);
+       list_del_rcu(&range->list);
+       mutex_unlock(&io_range_mutex);
+       synchronize_rcu();
+}
+
 /**
  * find_io_range_by_fwnode - find logical PIO range for given FW node
  * @fwnode: FW node handle associated with logical PIO range