tty: usb-serial krefs

[linux-2.6-omap-h63xx.git] / drivers / usb / serial / safe_serial.c

diff --git a/drivers/usb/serial/safe_serial.c b/drivers/usb/serial/safe_serial.c
index def52d07a4ea34f817c03b60ecc827655fd05d3a..72903ac9f5c0e1fff02eafbebdcfc6e356ea1e3c 100644 (file)
--- a/drivers/usb/serial/safe_serial.c
+++ b/drivers/usb/serial/safe_serial.c
@@ -217,6 +217,7 @@ static void safe_read_bulk_callback(struct urb *urb)
        struct usb_serial_port *port =  urb->context;
        unsigned char *data = urb->transfer_buffer;
        unsigned char length = urb->actual_length;
+       struct tty_struct *tty;
        int result;
        int status = urb->status;
 
@@ -242,6 +243,7 @@ static void safe_read_bulk_callback(struct urb *urb)
                printk("\n");
        }
 #endif
+       tty = tty_port_tty_get(&port->port);
        if (safe) {
                __u16 fcs;
                fcs = fcs_compute10(data, length, CRC10_INITFCS);
@@ -250,9 +252,9 @@ static void safe_read_bulk_callback(struct urb *urb)
                        if (actual_length <= (length - 2)) {
                                info("%s - actual: %d", __func__,
                                                        actual_length);
-                               tty_insert_flip_string(port->port.tty,
+                               tty_insert_flip_string(tty,
                                                        data, actual_length);
-                               tty_flip_buffer_push(port->port.tty);
+                               tty_flip_buffer_push(tty);
                        } else {
                                err("%s - inconsistent lengths %d:%d",
                                        __func__, actual_length, length);
@@ -261,9 +263,10 @@ static void safe_read_bulk_callback(struct urb *urb)
                        err("%s - bad CRC %x", __func__, fcs);
                }
        } else {
-               tty_insert_flip_string(port->port.tty, data, length);
-               tty_flip_buffer_push(port->port.tty);
+               tty_insert_flip_string(tty, data, length);
+               tty_flip_buffer_push(tty);
        }
+       tty_kref_put(tty);
 
        /* Continue trying to always read  */
        usb_fill_bulk_urb(urb, port->serial->dev,