[PATCH 24/26] dm: core: Split out scanning code to dm_scan()

[Simon Glass]

Move the code related to scanning for devices to bind, into a new
function. This will make it easier to skip this step with the new
of-platdata improvements.

Signed-off-by: Simon Glass <sjg at chromium.org>
---

 drivers/core/root.c | 49 ++++++++++++++++++++++++++++++++-------------
 1 file changed, 35 insertions(+), 14 deletions(-)

diff --git a/drivers/core/root.c b/drivers/core/root.c
index fe7359433f6..2a5ebec27d8 100644
--- a/drivers/core/root.c
+++ b/drivers/core/root.c
@@ -296,39 +296,60 @@ __weak int dm_scan_other(bool pre_reloc_only)
 	return 0;
 }
 
-int dm_init_and_scan(bool pre_reloc_only)
+/**
+ * dm_scan() - Scan tables to bind devices
+ *
+ * Runs through the driver_info tables and binds the devices it finds. Then runs
+ * through the devicetree nodes. Finally calls dm_scan_other() to add any
+ * special devices
+ *
+ * @pre_reloc_only: If true, bind only nodes with special devicetree properties,
+ * or drivers with the DM_FLAG_PRE_RELOC flag. If false bind all drivers.
+ */
+static int dm_scan(bool pre_reloc_only)
 {
 	int ret;
 
-	if (CONFIG_IS_ENABLED(OF_PLATDATA))
-		dm_populate_phandle_data();
-
-	ret = dm_init(CONFIG_IS_ENABLED(OF_LIVE));
-	if (ret) {
-		debug("dm_init() failed: %d\n", ret);
-		return ret;
-	}
 	ret = dm_scan_plat(pre_reloc_only);
 	if (ret) {
 		debug("dm_scan_plat() failed: %d\n", ret);
-		goto fail;
+		return ret;
 	}
 
 	if (CONFIG_IS_ENABLED(OF_CONTROL) && !CONFIG_IS_ENABLED(OF_PLATDATA)) {
 		ret = dm_extended_scan(pre_reloc_only);
 		if (ret) {
 			debug("dm_extended_scan() failed: %d\n", ret);
-			goto fail;
+			return ret;
 		}
 	}
 
 	ret = dm_scan_other(pre_reloc_only);
 	if (ret)
-		goto fail;
+		return ret;
+
+	return 0;
+}
+
+int dm_init_and_scan(bool pre_reloc_only)
+{
+	int ret;
+
+	if (CONFIG_IS_ENABLED(OF_PLATDATA))
+		dm_populate_phandle_data();
+
+	ret = dm_init(CONFIG_IS_ENABLED(OF_LIVE));
+	if (ret) {
+		debug("dm_init() failed: %d\n", ret);
+		return ret;
+	}
+	ret = dm_scan(pre_reloc_only);
+	if (ret) {
+		log_debug("dm_scan() failed: %d\n", ret);
+		return ret;
+	}
 
 	return 0;
-fail:
-	return ret;
 }
 
 #ifdef CONFIG_ACPIGEN
-- 
2.29.2.684.gfbc64c5ab5-goog