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path: root/drivers/usb/serial/usb-serial.c
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Diffstat (limited to 'drivers/usb/serial/usb-serial.c')
-rw-r--r--drivers/usb/serial/usb-serial.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/usb/serial/usb-serial.c b/drivers/usb/serial/usb-serial.c
index 5413bd500781..97355a15bbea 100644
--- a/drivers/usb/serial/usb-serial.c
+++ b/drivers/usb/serial/usb-serial.c
@@ -1059,6 +1059,12 @@ int usb_serial_probe(struct usb_interface *interface,
serial->attached = 1;
}
+ /* Avoid race with tty_open and serial_install by setting the
+ * disconnected flag and not clearing it until all ports have been
+ * registered.
+ */
+ serial->disconnected = 1;
+
if (get_free_serial(serial, num_ports, &minor) == NULL) {
dev_err(&interface->dev, "No more free serial devices\n");
goto probe_error;
@@ -1078,6 +1084,8 @@ int usb_serial_probe(struct usb_interface *interface,
"continuing\n");
}
+ serial->disconnected = 0;
+
usb_serial_console_init(debug, minor);
exit: