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serial: amba-pl010: use container_of to resolve uart_amba_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 19:19:46 +02:00 committed by Greg Kroah-Hartman
parent 726657653f
commit b70e5e9d71
1 changed files with 24 additions and 12 deletions
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36
drivers/tty/serial/amba-pl010.c
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@ -75,7 +75,8 @@ struct uart_amba_port {
static void pl010_stop_tx(struct uart_port *port)
{
struct uart_amba_port *uap = (struct uart_amba_port *)port;
struct uart_amba_port *uap =
container_of(port, struct uart_amba_port, port);
unsigned int cr;
cr = readb(uap->port.membase + UART010_CR);
@ -85,7 +86,8 @@ static void pl010_stop_tx(struct uart_port *port)
static void pl010_start_tx(struct uart_port *port)
{
struct uart_amba_port *uap = (struct uart_amba_port *)port;
struct uart_amba_port *uap =
container_of(port, struct uart_amba_port, port);
unsigned int cr;
cr = readb(uap->port.membase + UART010_CR);
@ -95,7 +97,8 @@ static void pl010_start_tx(struct uart_port *port)
static void pl010_stop_rx(struct uart_port *port)
{
struct uart_amba_port *uap = (struct uart_amba_port *)port;
struct uart_amba_port *uap =
container_of(port, struct uart_amba_port, port);
unsigned int cr;
cr = readb(uap->port.membase + UART010_CR);
@ -105,7 +108,8 @@ static void pl010_stop_rx(struct uart_port *port)
static void pl010_enable_ms(struct uart_port *port)
{
struct uart_amba_port *uap = (struct uart_amba_port *)port;
struct uart_amba_port *uap =
container_of(port, struct uart_amba_port, port);
unsigned int cr;
cr = readb(uap->port.membase + UART010_CR);
@ -259,14 +263,16 @@ static irqreturn_t pl010_int(int irq, void *dev_id)
static unsigned int pl010_tx_empty(struct uart_port *port)
{
struct uart_amba_port *uap = (struct uart_amba_port *)port;
struct uart_amba_port *uap =
container_of(port, struct uart_amba_port, port);
unsigned int status = readb(uap->port.membase + UART01x_FR);
return status & UART01x_FR_BUSY ? 0 : TIOCSER_TEMT;
}
static unsigned int pl010_get_mctrl(struct uart_port *port)
{
struct uart_amba_port *uap = (struct uart_amba_port *)port;
struct uart_amba_port *uap =
container_of(port, struct uart_amba_port, port);
unsigned int result = 0;
unsigned int status;
@ -283,7 +289,8 @@ static unsigned int pl010_get_mctrl(struct uart_port *port)
static void pl010_set_mctrl(struct uart_port *port, unsigned int mctrl)
{
struct uart_amba_port *uap = (struct uart_amba_port *)port;
struct uart_amba_port *uap =
container_of(port, struct uart_amba_port, port);
if (uap->data)
uap->data->set_mctrl(uap->dev, uap->port.membase, mctrl);
@ -291,7 +298,8 @@ static void pl010_set_mctrl(struct uart_port *port, unsigned int mctrl)
static void pl010_break_ctl(struct uart_port *port, int break_state)
{
struct uart_amba_port *uap = (struct uart_amba_port *)port;
struct uart_amba_port *uap =
container_of(port, struct uart_amba_port, port);
unsigned long flags;
unsigned int lcr_h;
@ -307,7 +315,8 @@ static void pl010_break_ctl(struct uart_port *port, int break_state)
static int pl010_startup(struct uart_port *port)
{
struct uart_amba_port *uap = (struct uart_amba_port *)port;
struct uart_amba_port *uap =
container_of(port, struct uart_amba_port, port);
int retval;
/*
@ -347,7 +356,8 @@ static int pl010_startup(struct uart_port *port)
static void pl010_shutdown(struct uart_port *port)
{
struct uart_amba_port *uap = (struct uart_amba_port *)port;
struct uart_amba_port *uap =
container_of(port, struct uart_amba_port, port);
/*
* Free the interrupt
@ -374,7 +384,8 @@ static void
pl010_set_termios(struct uart_port *port, struct ktermios *termios,
struct ktermios *old)
{
struct uart_amba_port *uap = (struct uart_amba_port *)port;
struct uart_amba_port *uap =
container_of(port, struct uart_amba_port, port);
unsigned int lcr_h, old_cr;
unsigned long flags;
unsigned int baud, quot;
@ -551,7 +562,8 @@ static struct uart_amba_port *amba_ports[UART_NR];
static void pl010_console_putchar(struct uart_port *port, int ch)
{
struct uart_amba_port *uap = (struct uart_amba_port *)port;
struct uart_amba_port *uap =
container_of(port, struct uart_amba_port, port);
unsigned int status;
do {