USB: sierra: fix memory leak in attach error path
Make sure port private data is deallocated on errors in attach.
Cc: <stable@vger.kernel.org>
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 76ef95b..2cb27e4 100644
--- a/drivers/usb/serial/sierra.c
+++ b/drivers/usb/serial/sierra.c
@@ -905,7 +905,7 @@
dev_dbg(&port->dev, "%s: kmalloc for "
"sierra_port_private (%d) failed!\n",
__func__, i);
- return -ENOMEM;
+ goto err;
}
spin_lock_init(&portdata->lock);
init_usb_anchor(&portdata->active);
@@ -942,6 +942,13 @@
}
return 0;
+err:
+ for (--i; i >= 0; --i) {
+ portdata = usb_get_serial_port_data(serial->port[i]);
+ kfree(portdata);
+ }
+
+ return -ENOMEM;
}
static void sierra_release(struct usb_serial *serial)