diff options
Diffstat (limited to 'common/usb_hub.c')
| -rw-r--r-- | common/usb_hub.c | 33 |
1 files changed, 28 insertions, 5 deletions
diff --git a/common/usb_hub.c b/common/usb_hub.c index e4a120120..4d75b902f 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); - if (usb_get_port_status(dev, i + 1, portsts) < 0) { - USB_HUB_PRINTF("get_port_status failed\n"); + /* + * 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 (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); |