1 files changed, 11 insertions, 3 deletions

diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
index 86658a81d284..00c3506324e4 100644
--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -4700,8 +4700,6 @@ hub_port_init(struct usb_hub *hub, struct usb_device *udev, int port1,
 	if (oldspeed == USB_SPEED_LOW)
 		delay = HUB_LONG_RESET_TIME;
 
-	mutex_lock(hcd->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, false);
@@ -5016,7 +5014,6 @@ fail:
 		hub_port_disable(hub, port1, 0);
 		update_devnum(udev, devnum);	/* for disconnect processing */
 	}
-	mutex_unlock(hcd->address0_mutex);
 	return retval;
 }
 
@@ -5246,6 +5243,9 @@ static void hub_port_connect(struct usb_hub *hub, int port1, u16 portstatus,
 		unit_load = 100;
 
 	status = 0;
+
+	mutex_lock(hcd->address0_mutex);
+
 	for (i = 0; i < PORT_INIT_TRIES; i++) {
 
 		/* reallocate for each attempt, since references
@@ -5282,6 +5282,8 @@ static void hub_port_connect(struct usb_hub *hub, int port1, u16 portstatus,
 		if (status < 0)
 			goto loop;
 
+		mutex_unlock(hcd->address0_mutex);
+
 		if (udev->quirks & USB_QUIRK_DELAY_INIT)
 			msleep(2000);
 
@@ -5370,6 +5372,7 @@ static void hub_port_connect(struct usb_hub *hub, int port1, u16 portstatus,
 
 loop_disable:
 		hub_port_disable(hub, port1, 1);
+		mutex_lock(hcd->address0_mutex);
 loop:
 		usb_ep0_reinit(udev);
 		release_devnum(udev);
@@ -5396,6 +5399,8 @@ loop:
 	}
 
 done:
+	mutex_unlock(hcd->address0_mutex);
+
 	hub_port_disable(hub, port1, 1);
 	if (hcd->driver->relinquish_port && !hub->hdev->parent) {
 		if (status != -ENOTCONN && status != -ENODEV)
@@ -5915,6 +5920,8 @@ static int usb_reset_and_verify_device(struct usb_device *udev)
 	bos = udev->bos;
 	udev->bos = NULL;
 
+	mutex_lock(hcd->address0_mutex);
+
 	for (i = 0; i < PORT_INIT_TRIES; ++i) {
 
 		/* ep0 maxpacket size may change; let the HCD know about it.
@@ -5924,6 +5931,7 @@ static int usb_reset_and_verify_device(struct usb_device *udev)
 		if (ret >= 0 || ret == -ENOTCONN || ret == -ENODEV)
 			break;
 	}
+	mutex_unlock(hcd->address0_mutex);
 
 	if (ret < 0)
 		goto re_enumerate;