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>
diff --git a/drivers/tty/serial/amba-pl010.c b/drivers/tty/serial/amba-pl010.c
index 2064d31..00ae8dc 100644
--- a/drivers/tty/serial/amba-pl010.c
+++ b/drivers/tty/serial/amba-pl010.c
@@ -75,7 +75,8 @@
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_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_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_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 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 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_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 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 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 @@
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 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 {