diff options
Diffstat (limited to 'drivers/usb/serial/console.c')
| -rw-r--r-- | drivers/usb/serial/console.c | 17 |
1 files changed, 15 insertions, 2 deletions
diff --git a/drivers/usb/serial/console.c b/drivers/usb/serial/console.c index fc4a0f731d9103..f3404e10afb4a3 100644 --- a/drivers/usb/serial/console.c +++ b/drivers/usb/serial/console.c @@ -202,7 +202,7 @@ static void usb_console_write(struct console *co, const char *buf, unsigned coun struct usb_serial *serial; int retval = -ENODEV; - if (!port) + if (!port || port->serial->dev->state == USB_STATE_NOTATTACHED) return; serial = port->serial; @@ -255,6 +255,14 @@ static struct console usbcons = { .index = -1, }; +void usb_serial_console_disconnect(struct usb_serial *serial) +{ + if (serial && serial->port && serial->port[0] && serial->port[0] == usbcons_info.port) { + usb_serial_console_exit(); + usb_serial_put(serial); + } +} + void usb_serial_console_init (int serial_debug, int minor) { debug = serial_debug; @@ -280,6 +288,11 @@ void usb_serial_console_init (int serial_debug, int minor) void usb_serial_console_exit (void) { - unregister_console(&usbcons); + if (usbcons_info.port) { + unregister_console(&usbcons); + if (usbcons_info.port->open_count) + usbcons_info.port->open_count--; + usbcons_info.port = NULL; + } } |