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path: root/payloads/libpayload/drivers/usb/usb.c
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Diffstat (limited to 'payloads/libpayload/drivers/usb/usb.c')
-rw-r--r--payloads/libpayload/drivers/usb/usb.c15
1 files changed, 6 insertions, 9 deletions
diff --git a/payloads/libpayload/drivers/usb/usb.c b/payloads/libpayload/drivers/usb/usb.c
index 4f21e0cf3b..eb23760033 100644
--- a/payloads/libpayload/drivers/usb/usb.c
+++ b/payloads/libpayload/drivers/usb/usb.c
@@ -39,15 +39,9 @@ hci_t *usb_hcs = 0;
hci_t *
new_controller (void)
{
- hci_t *controller = malloc (sizeof (hci_t));
-
- if (controller) {
- /* atomic */
- controller->next = usb_hcs;
- usb_hcs = controller;
- /* atomic end */
- }
-
+ hci_t *controller = xzalloc(sizeof (hci_t));
+ controller->next = usb_hcs;
+ usb_hcs = controller;
return controller;
}
@@ -56,6 +50,9 @@ detach_controller (hci_t *controller)
{
if (controller == NULL)
return;
+
+ usb_detach_device(controller, 0); /* tear down root hub tree */
+
if (usb_hcs == controller) {
usb_hcs = controller->next;
} else {