--- drivers/usb/serial/spcp8x5.c

+++ drivers/usb/serial/spcp8x5.c

@@ -137,7 +137,7 @@ struct spcp8x5_usb_ctrl_arg {

/* how come ??? */

#define UART_STATE 0x08

-#define UART_STATE_TRANSIENT_MASK 0x74

+#define UART_STATE_TRANSIENT_MASK 0x75

#define UART_DCD 0x01

#define UART_DSR 0x02

#define UART_BREAK_ERROR 0x04

@@ -734,6 +734,10 @@ static void spcp8x5_read_bulk_callback(s

tty_insert_flip_char(tty, data[i], tty_flag);

tty_flip_buffer_push(tty);

}

+

+ if (status & UART_DCD)

+ usb_serial_handle_dcd_change(port, tty,

+ priv->line_status & MSR_STATUS_LINE_DCD);

tty_kref_put(tty);

/* Schedule the next read _if_ we are still open */