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TTY: jsm: use container_of to resolve jsm_channel from uart_port 

Use container_of instead of casting first structure member.

Signed-off-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Fabian Frederick 2014-10-05 19:01:07 +02:00 committed by Greg Kroah-Hartman
parent e789d26887
commit a15ad34834
1 changed files with 20 additions and 10 deletions
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30
drivers/tty/serial/jsm/jsm_tty.c
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@ -77,7 +77,8 @@ static unsigned int jsm_tty_tx_empty(struct uart_port *port)
static unsigned int jsm_tty_get_mctrl(struct uart_port *port)
{
int result;
struct jsm_channel *channel = (struct jsm_channel *)port;
struct jsm_channel *channel =
container_of(port, struct jsm_channel, uart_port);
jsm_dbg(IOCTL, &channel->ch_bd->pci_dev, "start\n");
@ -98,7 +99,8 @@ static unsigned int jsm_tty_get_mctrl(struct uart_port *port)
*/
static void jsm_tty_set_mctrl(struct uart_port *port, unsigned int mctrl)
{
struct jsm_channel *channel = (struct jsm_channel *)port;
struct jsm_channel *channel =
container_of(port, struct jsm_channel, uart_port);
jsm_dbg(IOCTL, &channel->ch_bd->pci_dev, "start\n");
@ -133,7 +135,8 @@ static void jsm_tty_write(struct uart_port *port)
static void jsm_tty_start_tx(struct uart_port *port)
{
struct jsm_channel *channel = (struct jsm_channel *)port;
struct jsm_channel *channel =
container_of(port, struct jsm_channel, uart_port);
jsm_dbg(IOCTL, &channel->ch_bd->pci_dev, "start\n");
@ -145,7 +148,8 @@ static void jsm_tty_start_tx(struct uart_port *port)
static void jsm_tty_stop_tx(struct uart_port *port)
{
struct jsm_channel *channel = (struct jsm_channel *)port;
struct jsm_channel *channel =
container_of(port, struct jsm_channel, uart_port);
jsm_dbg(IOCTL, &channel->ch_bd->pci_dev, "start\n");
@ -157,7 +161,8 @@ static void jsm_tty_stop_tx(struct uart_port *port)
static void jsm_tty_send_xchar(struct uart_port *port, char ch)
{
unsigned long lock_flags;
struct jsm_channel *channel = (struct jsm_channel *)port;
struct jsm_channel *channel =
container_of(port, struct jsm_channel, uart_port);
struct ktermios *termios;
spin_lock_irqsave(&port->lock, lock_flags);
@ -172,7 +177,8 @@ static void jsm_tty_send_xchar(struct uart_port *port, char ch)
static void jsm_tty_stop_rx(struct uart_port *port)
{
struct jsm_channel *channel = (struct jsm_channel *)port;
struct jsm_channel *channel =
container_of(port, struct jsm_channel, uart_port);
channel->ch_bd->bd_ops->disable_receiver(channel);
}
@ -180,7 +186,8 @@ static void jsm_tty_stop_rx(struct uart_port *port)
static void jsm_tty_break(struct uart_port *port, int break_state)
{
unsigned long lock_flags;
struct jsm_channel *channel = (struct jsm_channel *)port;
struct jsm_channel *channel =
container_of(port, struct jsm_channel, uart_port);
spin_lock_irqsave(&port->lock, lock_flags);
if (break_state == -1)
@ -194,7 +201,8 @@ static void jsm_tty_break(struct uart_port *port, int break_state)
static int jsm_tty_open(struct uart_port *port)
{
struct jsm_board *brd;
struct jsm_channel *channel = (struct jsm_channel *)port;
struct jsm_channel *channel =
container_of(port, struct jsm_channel, uart_port);
struct ktermios *termios;
/* Get board pointer from our array of majors we have allocated */
@ -273,7 +281,8 @@ static void jsm_tty_close(struct uart_port *port)
{
struct jsm_board *bd;
struct ktermios *ts;
struct jsm_channel *channel = (struct jsm_channel *)port;
struct jsm_channel *channel =
container_of(port, struct jsm_channel, uart_port);
jsm_dbg(CLOSE, &channel->ch_bd->pci_dev, "start\n");
@ -307,7 +316,8 @@ static void jsm_tty_set_termios(struct uart_port *port,
struct ktermios *old_termios)
{
unsigned long lock_flags;
struct jsm_channel *channel = (struct jsm_channel *)port;
struct jsm_channel *channel =
container_of(port, struct jsm_channel, uart_port);
spin_lock_irqsave(&port->lock, lock_flags);
channel->ch_c_cflag = termios->c_cflag;