usb: hub: Clear port reset before usb_hub_port_connect_change()

During usb_hub_port_connect_change(), a port reset set feature
request is issued to the port, and later a port reset clear feature
is done to the same port before the function returns. However at
the end of usb_scan_port(), we attempt to clear port reset again
on a cached port status change variable, which should not be done.

Adjust the call to clear port reset to right before the call to
usb_hub_port_connect_change().

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>

diff --git a/common/usb_hub.c b/common/usb_hub.c
index 86a347766432467dcd67f078d963fce1bffa561c..a9d21bca5e32e07f716d6fe7ea9e5971cbe55140 100644 (file)
--- a/common/usb_hub.c
+++ b/common/usb_hub.c
@@ -489,6 +489,11 @@ static int usb_scan_port(struct usb_device_scan *usb_scan)
                return 0;
        }
 
+       if (portchange & USB_PORT_STAT_C_RESET) {
+               debug("port %d reset change\n", i + 1);
+               usb_clear_port_feature(dev, i + 1, USB_PORT_FEAT_C_RESET);
+       }
+
        /* A new USB device is ready at this point */
        debug("devnum=%d port=%d: USB dev found\n", dev->devnum, i + 1);
 
@@ -543,11 +548,6 @@ static int usb_scan_port(struct usb_device_scan *usb_scan)
                       hub->overcurrent_count[i]);
        }
 
-       if (portchange & USB_PORT_STAT_C_RESET) {
-               debug("port %d reset change\n", i + 1);
-               usb_clear_port_feature(dev, i + 1, USB_PORT_FEAT_C_RESET);
-       }
-
        /*
         * We're done with this device, so let's remove this device from
         * scanning list