Revert "USB: Reset USB 3.0 devices on (re)discovery"

This reverts commit 637d11bfb814637ec7b81e878db3ffea6408a89a.  Sarah
wants to tweak it some more before it's applied to the tree.

Cc: Luben Tuikov <ltuikov@yahoo.com>
Cc: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Cc: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
index 0f299b7..d041c68 100644 (file)
--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -2681,13 +2681,17 @@ hub_port_init (struct usb_hub *hub, struct usb_device *udev, int port1,
 
        mutex_lock(&usb_address0_mutex);
 
-       /* Reset the device; full speed may morph to high speed */
-       /* FIXME a USB 2.0 device may morph into SuperSpeed on reset. */
-       retval = hub_port_reset(hub, port1, udev, delay);
-       if (retval < 0)         /* error or disconnect */
-               goto fail;
-       /* success, speed is known */
-
+       if (!udev->config && oldspeed == USB_SPEED_SUPER) {
+               /* Don't reset USB 3.0 devices during an initial setup */
+               usb_set_device_state(udev, USB_STATE_DEFAULT);
+       } else {
+               /* Reset the device; full speed may morph to high speed */
+               /* FIXME a USB 2.0 device may morph into SuperSpeed on reset. */
+               retval = hub_port_reset(hub, port1, udev, delay);
+               if (retval < 0)         /* error or disconnect */
+                       goto fail;
+               /* success, speed is known */
+       }
        retval = -ENODEV;
 
        if (oldspeed != USB_SPEED_UNKNOWN && oldspeed != udev->speed) {