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-rw-r--r--common/usb_hub.c33
1 files changed, 28 insertions, 5 deletions
diff --git a/common/usb_hub.c b/common/usb_hub.c
index e4a1201..4d75b90 100644
--- a/common/usb_hub.c
+++ b/common/usb_hub.c
@@ -396,14 +396,37 @@ static int usb_hub_configure(struct usb_device *dev)
for (i = 0; i < dev->maxchild; i++) {
ALLOC_CACHE_ALIGN_BUFFER(struct usb_port_status, portsts, 1);
unsigned short portstatus, portchange;
+ int ret;
+ ulong start = get_timer(0);
+
+ /*
+ * Wait for (whichever finishes first)
+ * - A maximum of 10 seconds
+ * This is a purely observational value driven by connecting
+ * a few broken pen drives and taking the max * 1.5 approach
+ * - connection_change and connection state to report same
+ * state
+ */
+ do {
+ ret = usb_get_port_status(dev, i + 1, portsts);
+ if (ret < 0) {
+ USB_HUB_PRINTF("get_port_status failed\n");
+ break;
+ }
+
+ portstatus = le16_to_cpu(portsts->wPortStatus);
+ portchange = le16_to_cpu(portsts->wPortChange);
+
+ if ((portchange & USB_PORT_STAT_C_CONNECTION) ==
+ (portstatus & USB_PORT_STAT_CONNECTION))
+ break;
+
+ mdelay(100);
+ } while (get_timer(start) < CONFIG_SYS_HZ * 10);
- if (usb_get_port_status(dev, i + 1, portsts) < 0) {
- USB_HUB_PRINTF("get_port_status failed\n");
+ if (ret < 0)
continue;
- }
- portstatus = le16_to_cpu(portsts->wPortStatus);
- portchange = le16_to_cpu(portsts->wPortChange);
USB_HUB_PRINTF("Port %d Status %X Change %X\n",
i + 1, portstatus, portchange);