USB: Check for dropped connection before switching to full speed

[karo-tx-linux.git] / drivers / usb / core / hub.c

diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
index 6e6797d145dd80136c413129641bdbbae2f1e63b..822f8c50e4233c70d159a4e374ad66b49502c0c1 100644 (file)
--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -4725,7 +4725,8 @@ hub_power_remaining(struct usb_hub *hub)
 static void hub_port_connect(struct usb_hub *hub, int port1, u16 portstatus,
                u16 portchange)
 {
-       int status, i;
+       int status = -ENODEV;
+       int i;
        unsigned unit_load;
        struct usb_device *hdev = hub->hdev;
        struct usb_hcd *hcd = bus_to_hcd(hdev->bus);
@@ -4929,9 +4930,10 @@ loop:
 
 done:
        hub_port_disable(hub, port1, 1);
-       if (hcd->driver->relinquish_port && !hub->hdev->parent)
-               hcd->driver->relinquish_port(hcd, port1);
-
+       if (hcd->driver->relinquish_port && !hub->hdev->parent) {
+               if (status != -ENOTCONN && status != -ENODEV)
+                       hcd->driver->relinquish_port(hcd, port1);
+       }
 }
 
 /* Handle physical or logical connection change events.