[U-Boot] [PATCH v1] cmd: usb: add blk devices to ignore list in tree graph

[Suneel Garapati <suneelglinux@gmail.com>]

add blk child devices to ignore list while displaying
usb tree graph, otherwise usb tree and info commands
may cause crash treating blk as usb device.

Signed-off-by: Suneel Garapati <suneelglinux@gmail.com>
---

Changes v1:
 - add separate check on blk uclass
 - modify description
 - add separate check on parent uclass as usb

 cmd/usb.c | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

diff --git a/cmd/usb.c b/cmd/usb.c
index d95bcf5..cb0e183 100644
--- a/cmd/usb.c
+++ b/cmd/usb.c
@@ -414,8 +414,13 @@ static void usb_show_tree_graph(struct usb_device *dev, char *pre)
 
 		udev = dev_get_parent_priv(child);
 
-		/* Ignore emulators, we only want real devices */
-		if (device_get_uclass_id(child) != UCLASS_USB_EMUL) {
+		/*
+		 * Ignore emulators and block child devices, with check on
+		 * parent uclass as usb, we only want real devices
+		 */
+		if ((device_get_uclass_id(child) != UCLASS_USB_EMUL) &&
+		    (device_get_uclass_id(child) != UCLASS_BLK) &&
+		    (device_get_uclass_id(child->parent) == UCLASS_USB)) {
 			usb_show_tree_graph(udev, pre);
 			pre[index] = 0;
 		}
@@ -605,7 +610,8 @@ static void usb_show_info(struct usb_device *udev)
 	for (device_find_first_child(udev->dev, &child);
 	     child;
 	     device_find_next_child(&child)) {
-		if (device_active(child)) {
+		if (device_active(child) &&
+		    (device_get_uclass_id(child) != UCLASS_BLK)) {
 			udev = dev_get_parent_priv(child);
 			usb_show_info(udev);
 		}
-- 
2.7.4