devicetree: Single scan_bridges()

Change-Id: Ifd277992a69a4182e2fac92aaf746abe4fec2a1b
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: http://review.coreboot.org/8540
Tested-by: build bot (Jenkins)
Reviewed-by: Timothy Pearson <tpearson@raptorengineeringinc.com>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>

1 files changed, 17 insertions, 4 deletions

diff --git a/src/device/device.c b/src/device/device.c
index 35bb6e2cf2..a8900a69c6 100644
--- a/src/device/device.c
+++ b/src/device/device.c
@@ -916,15 +916,15 @@ int reset_bus(struct bus *bus)
  * @param max Current bus number.
  * @return The maximum bus number found, after scanning all subordinate buses.
  */
-unsigned int scan_bus(struct device *busdev, unsigned int max)
+static unsigned int scan_bus(struct device *busdev, unsigned int max)
 {
 	unsigned int new_max;
 	int do_scan_bus;
 
-	if (!busdev || !busdev->enabled || !busdev->ops ||
-	    !busdev->ops->scan_bus) {
+	if (!busdev->enabled)
 		return max;
-	}
+
+	printk(BIOS_SPEW, "%s scanning...\n", dev_path(busdev));
 
 	post_log_path(busdev);
 
@@ -945,6 +945,19 @@ unsigned int scan_bus(struct device *busdev, unsigned int max)
 	return new_max;
 }
 
+void scan_bridges(struct bus *bus)
+{
+	struct device *child;
+	unsigned int max = bus->secondary;
+
+	for (child = bus->children; child; child = child->sibling) {
+		if (!child->ops || !child->ops->scan_bus)
+			continue;
+		max = scan_bus(child, max);
+	}
+	bus->subordinate = max;
+}
+
 /**
  * Determine the existence of devices and extend the device tree.
  *