[U-Boot] [PATCH 3/3] dm: usb: Do not reprobe usb hosts on "usb tree" command

Hans de Goede
2016-04-02T18:46:11Z

Some usb hosts may have failed to probe on "usb start", i.e. an otg
host without an otg-host cable plugged in.

"usb tree" would cause the probe method of these hosts to get called
again, something which should only happen on "usb reset".

This commit fixes this.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
---
cmd/usb.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/cmd/usb.c b/cmd/usb.c
index 9ed5dc6..8741088 100644
--- a/cmd/usb.c
+++ b/cmd/usb.c
@@ -442,12 +442,15 @@ void usb_show_tree(void)
#ifdef CONFIG_DM_USB
struct udevice *bus;

- for (uclass_first_device(UCLASS_USB, &bus);
+ for (uclass_find_first_device(UCLASS_USB, &bus);
bus;
- uclass_next_device(&bus)) {
+ uclass_find_next_device(&bus)) {
struct usb_device *udev;
struct udevice *dev;

+ if (!device_active(bus))
+ continue;
+
device_find_first_child(bus, &dev);
if (dev && device_active(dev)) {
udev = dev_get_parent_priv(dev);
--
2.7.2