serial: sunsu: use container_of to resolve uart_sunsu_port from uart_port

Use container_of instead of casting first structure member.

Signed-off-by: Fabian Frederick <fabf@skynet.be>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/tty/serial/sunsu.c b/drivers/tty/serial/sunsu.c
index 5326ae195e5f68950f5e6478e6f3d7c406bc17a5..be010f89386822c55f06736fcec4c1332e722b66 100644 (file)
--- a/drivers/tty/serial/sunsu.c
+++ b/drivers/tty/serial/sunsu.c
@@ -264,7 +264,8 @@ static inline void __stop_tx(struct uart_sunsu_port *p)
 
 static void sunsu_stop_tx(struct uart_port *port)
 {
-       struct uart_sunsu_port *up = (struct uart_sunsu_port *) port;
+       struct uart_sunsu_port *up =
+               container_of(port, struct uart_sunsu_port, port);
 
        __stop_tx(up);
 
@@ -279,7 +280,8 @@ static void sunsu_stop_tx(struct uart_port *port)
 
 static void sunsu_start_tx(struct uart_port *port)
 {
-       struct uart_sunsu_port *up = (struct uart_sunsu_port *) port;
+       struct uart_sunsu_port *up =
+               container_of(port, struct uart_sunsu_port, port);
 
        if (!(up->ier & UART_IER_THRI)) {
                up->ier |= UART_IER_THRI;
@@ -297,7 +299,8 @@ static void sunsu_start_tx(struct uart_port *port)
 
 static void sunsu_stop_rx(struct uart_port *port)
 {
-       struct uart_sunsu_port *up = (struct uart_sunsu_port *) port;
+       struct uart_sunsu_port *up =
+               container_of(port, struct uart_sunsu_port, port);
 
        up->ier &= ~UART_IER_RLSI;
        up->port.read_status_mask &= ~UART_LSR_DR;
@@ -306,7 +309,8 @@ static void sunsu_stop_rx(struct uart_port *port)
 
 static void sunsu_enable_ms(struct uart_port *port)
 {
-       struct uart_sunsu_port *up = (struct uart_sunsu_port *) port;
+       struct uart_sunsu_port *up =
+               container_of(port, struct uart_sunsu_port, port);
        unsigned long flags;
 
        spin_lock_irqsave(&up->port.lock, flags);
@@ -543,7 +547,8 @@ static irqreturn_t sunsu_kbd_ms_interrupt(int irq, void *dev_id)
 
 static unsigned int sunsu_tx_empty(struct uart_port *port)
 {
-       struct uart_sunsu_port *up = (struct uart_sunsu_port *) port;
+       struct uart_sunsu_port *up =
+               container_of(port, struct uart_sunsu_port, port);
        unsigned long flags;
        unsigned int ret;
 
@@ -556,7 +561,8 @@ static unsigned int sunsu_tx_empty(struct uart_port *port)
 
 static unsigned int sunsu_get_mctrl(struct uart_port *port)
 {
-       struct uart_sunsu_port *up = (struct uart_sunsu_port *) port;
+       struct uart_sunsu_port *up =
+               container_of(port, struct uart_sunsu_port, port);
        unsigned char status;
        unsigned int ret;
 
@@ -576,7 +582,8 @@ static unsigned int sunsu_get_mctrl(struct uart_port *port)
 
 static void sunsu_set_mctrl(struct uart_port *port, unsigned int mctrl)
 {
-       struct uart_sunsu_port *up = (struct uart_sunsu_port *) port;
+       struct uart_sunsu_port *up =
+               container_of(port, struct uart_sunsu_port, port);
        unsigned char mcr = 0;
 
        if (mctrl & TIOCM_RTS)
@@ -595,7 +602,8 @@ static void sunsu_set_mctrl(struct uart_port *port, unsigned int mctrl)
 
 static void sunsu_break_ctl(struct uart_port *port, int break_state)
 {
-       struct uart_sunsu_port *up = (struct uart_sunsu_port *) port;
+       struct uart_sunsu_port *up =
+               container_of(port, struct uart_sunsu_port, port);
        unsigned long flags;
 
        spin_lock_irqsave(&up->port.lock, flags);
@@ -609,7 +617,8 @@ static void sunsu_break_ctl(struct uart_port *port, int break_state)
 
 static int sunsu_startup(struct uart_port *port)
 {
-       struct uart_sunsu_port *up = (struct uart_sunsu_port *) port;
+       struct uart_sunsu_port *up =
+               container_of(port, struct uart_sunsu_port, port);
        unsigned long flags;
        int retval;
 
@@ -719,7 +728,8 @@ static int sunsu_startup(struct uart_port *port)
 
 static void sunsu_shutdown(struct uart_port *port)
 {
-       struct uart_sunsu_port *up = (struct uart_sunsu_port *) port;
+       struct uart_sunsu_port *up =
+               container_of(port, struct uart_sunsu_port, port);
        unsigned long flags;
 
        /*
@@ -767,7 +777,8 @@ static void
 sunsu_change_speed(struct uart_port *port, unsigned int cflag,
                   unsigned int iflag, unsigned int quot)
 {
-       struct uart_sunsu_port *up = (struct uart_sunsu_port *) port;
+       struct uart_sunsu_port *up =
+               container_of(port, struct uart_sunsu_port, port);
        unsigned char cval, fcr = 0;
        unsigned long flags;
 
@@ -918,7 +929,8 @@ static int sunsu_request_port(struct uart_port *port)
 
 static void sunsu_config_port(struct uart_port *port, int flags)
 {
-       struct uart_sunsu_port *up = (struct uart_sunsu_port *) port;
+       struct uart_sunsu_port *up =
+               container_of(port, struct uart_sunsu_port, port);
 
        if (flags & UART_CONFIG_TYPE) {
                /*
@@ -1277,7 +1289,8 @@ static __inline__ void wait_for_xmitr(struct uart_sunsu_port *up)
 
 static void sunsu_console_putchar(struct uart_port *port, int ch)
 {
-       struct uart_sunsu_port *up = (struct uart_sunsu_port *)port;
+       struct uart_sunsu_port *up =
+               container_of(port, struct uart_sunsu_port, port);
 
        wait_for_xmitr(up);
        serial_out(up, UART_TX, ch);