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path: root/drivers/usb/serial/spcp8x5.c
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Diffstat (limited to 'drivers/usb/serial/spcp8x5.c')
-rw-r--r--drivers/usb/serial/spcp8x5.c18
1 files changed, 9 insertions, 9 deletions
diff --git a/drivers/usb/serial/spcp8x5.c b/drivers/usb/serial/spcp8x5.c
index 04e373152724..91ff8e3bddbd 100644
--- a/drivers/usb/serial/spcp8x5.c
+++ b/drivers/usb/serial/spcp8x5.c
@@ -462,7 +462,6 @@ static void spcp8x5_process_read_urb(struct urb *urb)
{
struct usb_serial_port *port = urb->context;
struct spcp8x5_private *priv = usb_get_serial_port_data(port);
- struct tty_struct *tty;
unsigned char *data = urb->transfer_buffer;
unsigned long flags;
u8 status;
@@ -481,9 +480,6 @@ static void spcp8x5_process_read_urb(struct urb *urb)
if (!urb->actual_length)
return;
- tty = tty_port_tty_get(&port->port);
- if (!tty)
- return;
if (status & UART_STATE_TRANSIENT_MASK) {
/* break takes precedence over parity, which takes precedence
@@ -500,15 +496,19 @@ static void spcp8x5_process_read_urb(struct urb *urb)
if (status & UART_OVERRUN_ERROR)
tty_insert_flip_char(&port->port, 0, TTY_OVERRUN);
- if (status & UART_DCD)
- usb_serial_handle_dcd_change(port, tty,
- priv->line_status & MSR_STATUS_LINE_DCD);
+ if (status & UART_DCD) {
+ struct tty_struct *tty = tty_port_tty_get(&port->port);
+ if (tty) {
+ usb_serial_handle_dcd_change(port, tty,
+ priv->line_status & MSR_STATUS_LINE_DCD);
+ tty_kref_put(tty);
+ }
+ }
}
tty_insert_flip_string_fixed_flag(&port->port, data, tty_flag,
urb->actual_length);
- tty_flip_buffer_push(tty);
- tty_kref_put(tty);
+ tty_flip_buffer_push(&port->port);
}
static int spcp8x5_wait_modem_info(struct usb_serial_port *port,