tty: Remove lots of NULL checks

[linux-2.6-omap-h63xx.git] / drivers / char / generic_serial.c

diff --git a/drivers/char/generic_serial.c b/drivers/char/generic_serial.c
index 19d3afb0e50c5854d466bcee013217c0d52c64b3..c6090f84a2e46cf5f7c571bfd511c2c5b609cd57 100644 (file)
--- a/drivers/char/generic_serial.c
+++ b/drivers/char/generic_serial.c
@@ -54,8 +54,6 @@ int gs_put_char(struct tty_struct * tty, unsigned char ch)
 
        func_enter (); 
 
-       if (!tty) return 0;
-
        port = tty->driver_data;
 
        if (!port) return 0;
@@ -97,8 +95,6 @@ int gs_write(struct tty_struct * tty,
 
        func_enter ();
 
-       if (!tty) return 0;
-
        port = tty->driver_data;
 
        if (!port) return 0;
@@ -185,7 +181,6 @@ static int gs_real_chars_in_buffer(struct tty_struct *tty)
        struct gs_port *port;
        func_enter ();
 
-       if (!tty) return 0;
        port = tty->driver_data;
 
        if (!port->rd) return 0;
@@ -274,8 +269,6 @@ void gs_flush_buffer(struct tty_struct *tty)
 
        func_enter ();
 
-       if (!tty) return;
-
        port = tty->driver_data;
 
        if (!port) return;
@@ -296,8 +289,6 @@ void gs_flush_chars(struct tty_struct * tty)
 
        func_enter ();
 
-       if (!tty) return;
-
        port = tty->driver_data;
 
        if (!port) return;
@@ -321,8 +312,6 @@ void gs_stop(struct tty_struct * tty)
 
        func_enter ();
 
-       if (!tty) return;
-
        port = tty->driver_data;
 
        if (!port) return;
@@ -341,8 +330,6 @@ void gs_start(struct tty_struct * tty)
 {
        struct gs_port *port;
 
-       if (!tty) return;
-
        port = tty->driver_data;
 
        if (!port) return;
@@ -393,8 +380,6 @@ void gs_hangup(struct tty_struct *tty)
 
        func_enter ();
 
-       if (!tty) return;
-
        port = tty->driver_data;
        tty = port->port.tty;
        if (!tty) 
@@ -426,8 +411,6 @@ int gs_block_til_ready(void *port_, struct file * filp)
 
        tty = port->port.tty;
 
-       if (!tty) return 0;
-
        gs_dprintk (GS_DEBUG_BTR, "Entering gs_block_till_ready.\n"); 
        /*
         * If the device is in the middle of being closed, then block
@@ -523,8 +506,6 @@ void gs_close(struct tty_struct * tty, struct file * filp)
        
        func_enter ();
 
-       if (!tty) return;
-
        port = (struct gs_port *) tty->driver_data;
 
        if (!port) return;
@@ -621,8 +602,6 @@ void gs_set_termios (struct tty_struct * tty,
 
        func_enter();
 
-       if (!tty) return;
-
        port = tty->driver_data;
 
        if (!port) return;