From: Johan Hovold <jhovold@gmail.com>
Date: Mon, 26 May 2014 17:23:03 +0000 (+0200)
Subject: USB: sierra: do not resume I/O on closed ports
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=a283d080a49a5014f525bf722e5a6a07835e45ef;p=openwrt%2Fstaging%2Fblogic.git

USB: sierra: do not resume I/O on closed ports

Do not resume any I/O, including the delayed write queue, on closed
ports.

Note that this currently has no functional impact due to the
usb_autopm_get_interface() in close(), but that call is about to be
removed by a follow-up patch.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/usb/serial/sierra.c b/drivers/usb/serial/sierra.c
index 74b417c91e30..ac5e20d9bd24 100644
--- a/drivers/usb/serial/sierra.c
+++ b/drivers/usb/serial/sierra.c
@@ -1013,7 +1013,7 @@ static int sierra_resume(struct usb_serial *serial)
 		port = serial->port[i];
 		portdata = usb_get_serial_port_data(port);
 
-		if (!portdata)
+		if (!portdata || !portdata->opened)
 			continue;
 
 		while ((urb = usb_get_from_anchor(&portdata->delayed))) {
@@ -1036,11 +1036,9 @@ static int sierra_resume(struct usb_serial *serial)
 			}
 		}
 
-		if (portdata->opened) {
-			err = sierra_submit_rx_urbs(port, GFP_ATOMIC);
-			if (err)
-				ec++;
-		}
+		err = sierra_submit_rx_urbs(port, GFP_ATOMIC);
+		if (err)
+			ec++;
 	}
 	intfdata->suspended = 0;
 	spin_unlock_irq(&intfdata->susp_lock);