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serial: use container_of to resolve uart_ip22zilog_port 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 19:01:04 +02:00 committed by Greg Kroah-Hartman
parent c9db776b57
commit 2413b32062
1 changed files with 12 additions and 6 deletions
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18
drivers/tty/serial/ip22zilog.c
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@ -544,7 +544,8 @@ static unsigned int ip22zilog_get_mctrl(struct uart_port *port)
/* The port lock is held and interrupts are disabled. */
static void ip22zilog_set_mctrl(struct uart_port *port, unsigned int mctrl)
{
struct uart_ip22zilog_port *up = (struct uart_ip22zilog_port *) port;
struct uart_ip22zilog_port *up =
container_of(port, struct uart_ip22zilog_port, port);
struct zilog_channel *channel = ZILOG_CHANNEL_FROM_PORT(port);
unsigned char set_bits, clear_bits;
@ -568,7 +569,8 @@ static void ip22zilog_set_mctrl(struct uart_port *port, unsigned int mctrl)
/* The port lock is held and interrupts are disabled. */
static void ip22zilog_stop_tx(struct uart_port *port)
{
struct uart_ip22zilog_port *up = (struct uart_ip22zilog_port *) port;
struct uart_ip22zilog_port *up =
container_of(port, struct uart_ip22zilog_port, port);
up->flags |= IP22ZILOG_FLAG_TX_STOPPED;
}
@ -576,7 +578,8 @@ static void ip22zilog_stop_tx(struct uart_port *port)
/* The port lock is held and interrupts are disabled. */
static void ip22zilog_start_tx(struct uart_port *port)
{
struct uart_ip22zilog_port *up = (struct uart_ip22zilog_port *) port;
struct uart_ip22zilog_port *up =
container_of(port, struct uart_ip22zilog_port, port);
struct zilog_channel *channel = ZILOG_CHANNEL_FROM_PORT(port);
unsigned char status;
@ -636,7 +639,8 @@ static void ip22zilog_stop_rx(struct uart_port *port)
/* The port lock is held. */
static void ip22zilog_enable_ms(struct uart_port *port)
{
struct uart_ip22zilog_port *up = (struct uart_ip22zilog_port *) port;
struct uart_ip22zilog_port *up =
container_of(port, struct uart_ip22zilog_port, port);
struct zilog_channel *channel = ZILOG_CHANNEL_FROM_PORT(port);
unsigned char new_reg;
@ -652,7 +656,8 @@ static void ip22zilog_enable_ms(struct uart_port *port)
/* The port lock is not held. */
static void ip22zilog_break_ctl(struct uart_port *port, int break_state)
{
struct uart_ip22zilog_port *up = (struct uart_ip22zilog_port *) port;
struct uart_ip22zilog_port *up =
container_of(port, struct uart_ip22zilog_port, port);
struct zilog_channel *channel = ZILOG_CHANNEL_FROM_PORT(port);
unsigned char set_bits, clear_bits, new_reg;
unsigned long flags;
@ -873,7 +878,8 @@ static void
ip22zilog_set_termios(struct uart_port *port, struct ktermios *termios,
struct ktermios *old)
{
struct uart_ip22zilog_port *up = (struct uart_ip22zilog_port *) port;
struct uart_ip22zilog_port *up =
container_of(port, struct uart_ip22zilog_port, port);
unsigned long flags;
int baud, brg;