Use container_of instead of casting first structure member.
Signed-off-by: Fabian Frederick <fabf@xxxxxxxxx>
---
drivers/tty/serial/m32r_sio.c | 42 ++++++++++++++++++++++++++++--------------
1 file changed, 28 insertions(+), 14 deletions(-)
diff --git a/drivers/tty/serial/m32r_sio.c b/drivers/tty/serial/m32r_sio.c
index 5702828..8f7f83a 100644
--- a/drivers/tty/serial/m32r_sio.c
+++ b/drivers/tty/serial/m32r_sio.c
@@ -249,7 +249,8 @@ static void serial_out(struct uart_sio_port *up, int offset, int value)
static void m32r_sio_stop_tx(struct uart_port *port)
{
- struct uart_sio_port *up = (struct uart_sio_port *)port;
+ struct uart_sio_port *up =
+ container_of(port, struct uart_sio_port, port);
if (up->ier & UART_IER_THRI) {
up->ier &= ~UART_IER_THRI;
@@ -260,7 +261,8 @@ static void m32r_sio_stop_tx(struct uart_port *port)
static void m32r_sio_start_tx(struct uart_port *port)
{
#ifdef CONFIG_SERIAL_M32R_PLDSIO
- struct uart_sio_port *up = (struct uart_sio_port *)port;
+ struct uart_sio_port *up =
+ container_of(port, struct uart_sio_port, port);
struct circ_buf *xmit = &up->port.state->xmit;
if (!(up->ier & UART_IER_THRI)) {
@@ -274,7 +276,8 @@ static void m32r_sio_start_tx(struct uart_port *port)
}
while((serial_in(up, UART_LSR) & UART_EMPTY) != UART_EMPTY);
#else
- struct uart_sio_port *up = (struct uart_sio_port *)port;
+ struct uart_sio_port *up =
+ container_of(port, struct uart_sio_port, port);
if (!(up->ier & UART_IER_THRI)) {
up->ier |= UART_IER_THRI;
@@ -285,7 +288,8 @@ static void m32r_sio_start_tx(struct uart_port *port)
static void m32r_sio_stop_rx(struct uart_port *port)
{
- struct uart_sio_port *up = (struct uart_sio_port *)port;
+ struct uart_sio_port *up =
+ container_of(port, struct uart_sio_port, port);
up->ier &= ~UART_IER_RLSI;
up->port.read_status_mask &= ~UART_LSR_DR;
@@ -294,7 +298,8 @@ static void m32r_sio_stop_rx(struct uart_port *port)
static void m32r_sio_enable_ms(struct uart_port *port)
{
- struct uart_sio_port *up = (struct uart_sio_port *)port;
+ struct uart_sio_port *up =
+ container_of(port, struct uart_sio_port, port);
up->ier |= UART_IER_MSI;
serial_out(up, UART_IER, up->ier);
@@ -581,7 +586,8 @@ static void m32r_sio_timeout(unsigned long data)
static unsigned int m32r_sio_tx_empty(struct uart_port *port)
{
- struct uart_sio_port *up = (struct uart_sio_port *)port;
+ struct uart_sio_port *up =
+ container_of(port, struct uart_sio_port, port);
unsigned long flags;
unsigned int ret;
@@ -609,7 +615,8 @@ static void m32r_sio_break_ctl(struct uart_port *port, int break_state)
static int m32r_sio_startup(struct uart_port *port)
{
- struct uart_sio_port *up = (struct uart_sio_port *)port;
+ struct uart_sio_port *up =
+ container_of(port, struct uart_sio_port, port);
int retval;
sio_init();
@@ -652,7 +659,8 @@ static int m32r_sio_startup(struct uart_port *port)
static void m32r_sio_shutdown(struct uart_port *port)
{
- struct uart_sio_port *up = (struct uart_sio_port *)port;
+ struct uart_sio_port *up =
+ container_of(port, struct uart_sio_port, port);
/*
* Disable interrupts from this port
@@ -681,7 +689,8 @@ static unsigned int m32r_sio_get_divisor(struct uart_port *port,
static void m32r_sio_set_termios(struct uart_port *port,
struct ktermios *termios, struct ktermios *old)
{
- struct uart_sio_port *up = (struct uart_sio_port *)port;
+ struct uart_sio_port *up =
+ container_of(port, struct uart_sio_port, port);
unsigned char cval = 0;
unsigned long flags;
unsigned int baud, quot;
@@ -780,7 +789,8 @@ static void m32r_sio_set_termios(struct uart_port *port,
static void m32r_sio_pm(struct uart_port *port, unsigned int state,
unsigned int oldstate)
{
- struct uart_sio_port *up = (struct uart_sio_port *)port;
+ struct uart_sio_port *up =
+ container_of(port, struct uart_sio_port, port);
if (up->pm)
up->pm(port, state, oldstate);
@@ -825,7 +835,8 @@ m32r_sio_request_std_resource(struct uart_sio_port *up, struct resource **res)
static void m32r_sio_release_port(struct uart_port *port)
{
- struct uart_sio_port *up = (struct uart_sio_port *)port;
+ struct uart_sio_port *up =
+ container_of(port, struct uart_sio_port, port);
unsigned long start, offset = 0, size = 0;
size <<= up->port.regshift;
@@ -862,7 +873,8 @@ static void m32r_sio_release_port(struct uart_port *port)
static int m32r_sio_request_port(struct uart_port *port)
{
- struct uart_sio_port *up = (struct uart_sio_port *)port;
+ struct uart_sio_port *up =
+ container_of(port, struct uart_sio_port, port);
struct resource *res = NULL;
int ret = 0;
@@ -889,7 +901,8 @@ static int m32r_sio_request_port(struct uart_port *port)
static void m32r_sio_config_port(struct uart_port *port, int unused)
{
- struct uart_sio_port *up = (struct uart_sio_port *)port;
+ struct uart_sio_port *up =
+ container_of(port, struct uart_sio_port, port);
unsigned long flags;
spin_lock_irqsave(&up->port.lock, flags);
@@ -1000,7 +1013,8 @@ static inline void wait_for_xmitr(struct uart_sio_port *up)
static void m32r_sio_console_putchar(struct uart_port *port, int ch)
{
- struct uart_sio_port *up = (struct uart_sio_port *)port;
+ struct uart_sio_port *up =
+ container_of(port, struct uart_sio_port, port);
wait_for_xmitr(up);
sio_out(up, SIOTXB, ch);
--
1.9.1
--
To unsubscribe from this list: send the line "unsubscribe linux-serial" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
