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>

diff --git a/drivers/tty/serial/clps711x.c b/drivers/tty/serial/clps711x.c
index de6aa33..3b17d19 100644 (file)
--- a/drivers/tty/serial/clps711x.c
+++ b/drivers/tty/serial/clps711x.c
@@ -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