1 files changed, 26 insertions, 0 deletions

diff --git a/drivers/of/base.c b/drivers/of/base.c
index 80c9deca5f35..9bd7c4a31253 100644
--- a/drivers/of/base.c
+++ b/drivers/of/base.c
@@ -117,6 +117,32 @@ int of_device_is_compatible(const struct device_node *device,
 EXPORT_SYMBOL(of_device_is_compatible);
 
 /**
+ *  of_device_is_available - check if a device is available for use
+ *
+ *  @device: Node to check for availability
+ *
+ *  Returns 1 if the status property is absent or set to "okay" or "ok",
+ *  0 otherwise
+ */
+int of_device_is_available(const struct device_node *device)
+{
+        const char *status;
+        int statlen;
+
+        status = of_get_property(device, "status", &statlen);
+        if (status == NULL)
+                return 1;
+
+        if (statlen > 0) {
+                if (!strcmp(status, "okay") || !strcmp(status, "ok"))
+                        return 1;
+        }
+
+        return 0;
+}
+EXPORT_SYMBOL(of_device_is_available);
+
+/**
  *      of_get_parent - Get a node's parent if any
  *      @node:  Node to get parent
  *