X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;ds=sidebyside;f=drivers%2Fof%2Fbase.c;h=9bd7c4a31253a5d7349d5b2fd3cb383e826d9680;hb=c2a3b233450d5bc426c063ea2d8a74351db29ea4;hp=80c9deca5f35aa3313245d099215d5f387c687b1;hpb=4383f18b7f94a4d668c5eec68645c75d44556235;p=linux-2.6

diff --git a/drivers/of/base.c b/drivers/of/base.c
index 80c9deca5f..9bd7c4a312 100644
--- a/drivers/of/base.c
+++ b/drivers/of/base.c
@@ -116,6 +116,32 @@ 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