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serial: clps711x: Do not use "uart_port->unused" field 

Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Alexander Shiyan 2012-10-14 11:05:25 +04:00 committed by Greg Kroah-Hartman
parent 117d5d424a
commit 3c7e9eb160
1 changed files with 17 additions and 15 deletions
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32
drivers/tty/serial/clps711x.c
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@ -56,11 +56,10 @@
#define UART_ANY_ERR (UARTDR_FRMERR | UARTDR_PARERR | UARTDR_OVERR)
#define tx_enabled(port) ((port)->unused[0])
struct clps711x_port {
struct uart_driver uart;
struct uart_port port[UART_CLPS711X_NR];
int tx_enabled[UART_CLPS711X_NR];
#ifdef CONFIG_SERIAL_CLPS711X_CONSOLE
struct console console;
#endif
@ -68,17 +67,21 @@ struct clps711x_port {
static void clps711xuart_stop_tx(struct uart_port *port)
{
if (tx_enabled(port)) {
struct clps711x_port *s = dev_get_drvdata(port->dev);
if (s->tx_enabled[port->line]) {
disable_irq(TX_IRQ(port));
tx_enabled(port) = 0;
s->tx_enabled[port->line] = 0;
}
}
static void clps711xuart_start_tx(struct uart_port *port)
{
if (!tx_enabled(port)) {
struct clps711x_port *s = dev_get_drvdata(port->dev);
if (!s->tx_enabled[port->line]) {
enable_irq(TX_IRQ(port));
tx_enabled(port) = 1;
s->tx_enabled[port->line] = 1;
}
}
@ -148,6 +151,7 @@ static irqreturn_t clps711xuart_int_rx(int irq, void *dev_id)
static irqreturn_t clps711xuart_int_tx(int irq, void *dev_id)
{
struct uart_port *port = dev_id;
struct clps711x_port *s = dev_get_drvdata(port->dev);
struct circ_buf *xmit = &port->state->xmit;
int count;
@ -158,8 +162,11 @@ static irqreturn_t clps711xuart_int_tx(int irq, void *dev_id)
return IRQ_HANDLED;
}
if (uart_circ_empty(xmit) || uart_tx_stopped(port))
goto disable_tx_irq;
if (uart_circ_empty(xmit) || uart_tx_stopped(port)) {
disable_irq_nosync(TX_IRQ(port));
s->tx_enabled[port->line] = 0;
return IRQ_HANDLED;
}
count = port->fifosize >> 1;
do {
@ -173,12 +180,6 @@ static irqreturn_t clps711xuart_int_tx(int irq, void *dev_id)
if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
uart_write_wakeup(port);
if (uart_circ_empty(xmit)) {
disable_tx_irq:
disable_irq_nosync(TX_IRQ(port));
tx_enabled(port) = 0;
}
return IRQ_HANDLED;
}
@ -230,10 +231,11 @@ static void clps711xuart_break_ctl(struct uart_port *port, int break_state)
static int clps711xuart_startup(struct uart_port *port)
{
struct clps711x_port *s = dev_get_drvdata(port->dev);
unsigned int syscon;
int retval;
tx_enabled(port) = 1;
s->tx_enabled[port->line] = 1;
/*
* Allocate the IRQs