Merge git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6.git

1 files changed, 11 insertions, 2 deletions

diff --git a/drivers/usb/serial/generic.c b/drivers/usb/serial/generic.c
index 9eb4a65ee4d..97fa3c42843 100644
--- a/drivers/usb/serial/generic.c
+++ b/drivers/usb/serial/generic.c
@@ -175,6 +175,14 @@ int usb_serial_generic_resume(struct usb_serial *serial)
 	struct usb_serial_port *port;
 	int i, c = 0, r;
 
+#ifdef CONFIG_PM
+	/*
+	 * If this is an autoresume, don't submit URBs.
+	 * They will be submitted in the open function instead.
+	 */
+	if (serial->dev->auto_pm)
+		return 0;
+#endif
 	for (i = 0; i < serial->num_ports; i++) {
 		port = serial->port[i];
 		if (port->open_count && port->read_urb) {
@@ -327,6 +335,7 @@ void usb_serial_generic_read_bulk_callback (struct urb *urb)
 	struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
 	unsigned char *data = urb->transfer_buffer;
 	int status = urb->status;
+	unsigned long flags;
 
 	dbg("%s - port %d", __FUNCTION__, port->number);
 
@@ -339,11 +348,11 @@ void usb_serial_generic_read_bulk_callback (struct urb *urb)
 	usb_serial_debug_data(debug, &port->dev, __FUNCTION__, urb->actual_length, data);
 
 	/* Throttle the device if requested by tty */
-	spin_lock(&port->lock);
+	spin_lock_irqsave(&port->lock, flags);
 	if (!(port->throttled = port->throttle_req))
 		/* Handle data and continue reading from device */
 		flush_and_resubmit_read_urb(port);
-	spin_unlock(&port->lock);
+	spin_unlock_irqrestore(&port->lock, flags);
 }
 EXPORT_SYMBOL_GPL(usb_serial_generic_read_bulk_callback);