X-Git-Url: http://git.monstr.eu/?a=blobdiff_plain;f=include%2Flinux%2Freset.h;h=8a21b5756c3efba8e1b788cdc5e9ff65e774d341;hb=f6f02040e0ca7cb2e82d8aeb8f7daf5d89acc04c;hp=db0e6115a2f6ad639fd5f73d912e64c0e3a036a7;hpb=8f4ef88ebadefcf16b7f616f8af940465c44bea2;p=linux-2.6-microblaze.git

diff --git a/include/linux/reset.h b/include/linux/reset.h
index db0e6115a2f6..8a21b5756c3e 100644
--- a/include/linux/reset.h
+++ b/include/linux/reset.h
@@ -454,6 +454,26 @@ static inline struct reset_control *of_reset_control_get_exclusive(
 	return __of_reset_control_get(node, id, 0, false, false, true);
 }
 
+/**
+ * of_reset_control_get_optional_exclusive - Lookup and obtain an optional exclusive
+ *                                           reference to a reset controller.
+ * @node: device to be reset by the controller
+ * @id: reset line name
+ *
+ * Optional variant of of_reset_control_get_exclusive(). If the requested reset
+ * is not specified in the device tree, this function returns NULL instead of
+ * an error.
+ *
+ * Returns a struct reset_control or IS_ERR() condition containing errno.
+ *
+ * Use of id names is optional.
+ */
+static inline struct reset_control *of_reset_control_get_optional_exclusive(
+				struct device_node *node, const char *id)
+{
+	return __of_reset_control_get(node, id, 0, false, true, true);
+}
+
 /**
  * of_reset_control_get_shared - Lookup and obtain a shared reference
  *                               to a reset controller.