[PATCH] TTY layer buffering revamp

[pandora-kernel.git] / drivers / serial / m32r_sio.c

diff --git a/drivers/serial/m32r_sio.c b/drivers/serial/m32r_sio.c
index 0301fea..b48066a 100644 (file)
--- a/drivers/serial/m32r_sio.c
+++ b/drivers/serial/m32r_sio.c
@@ -275,7 +275,7 @@ serial_out(struct uart_sio_port *up, int offset, int value)
        __sio_out(value, offset);
 }
 
-static void m32r_sio_stop_tx(struct uart_port *port, unsigned int tty_stop)
+static void m32r_sio_stop_tx(struct uart_port *port)
 {
        struct uart_sio_port *up = (struct uart_sio_port *)port;
 
@@ -285,7 +285,7 @@ static void m32r_sio_stop_tx(struct uart_port *port, unsigned int tty_stop)
        }
 }
 
-static void m32r_sio_start_tx(struct uart_port *port, unsigned int tty_start)
+static void m32r_sio_start_tx(struct uart_port *port)
 {
 #ifdef CONFIG_SERIAL_M32R_PLDSIO
        struct uart_sio_port *up = (struct uart_sio_port *)port;
@@ -331,17 +331,12 @@ static _INLINE_ void receive_chars(struct uart_sio_port *up, int *status,
 {
        struct tty_struct *tty = up->port.info->tty;
        unsigned char ch;
+       unsigned char flag;
        int max_count = 256;
 
        do {
-               if (unlikely(tty->flip.count >= TTY_FLIPBUF_SIZE)) {
-                       tty->flip.work.func((void *)tty);
-                       if (tty->flip.count >= TTY_FLIPBUF_SIZE)
-                               return; // if TTY_DONT_FLIP is set
-               }
                ch = sio_in(up, SIORXB);
-               *tty->flip.char_buf_ptr = ch;
-               *tty->flip.flag_buf_ptr = TTY_NORMAL;
+               flag = TTY_NORMAL;
                up->port.icount.rx++;
 
                if (unlikely(*status & (UART_LSR_BI | UART_LSR_PE |
@@ -380,30 +375,24 @@ static _INLINE_ void receive_chars(struct uart_sio_port *up, int *status,
 
                        if (*status & UART_LSR_BI) {
                                DEBUG_INTR("handling break....");
-                               *tty->flip.flag_buf_ptr = TTY_BREAK;
+                               flag = TTY_BREAK;
                        } else if (*status & UART_LSR_PE)
-                               *tty->flip.flag_buf_ptr = TTY_PARITY;
+                               flag = TTY_PARITY;
                        else if (*status & UART_LSR_FE)
-                               *tty->flip.flag_buf_ptr = TTY_FRAME;
+                               flag = TTY_FRAME;
                }
                if (uart_handle_sysrq_char(&up->port, ch, regs))
                        goto ignore_char;
-               if ((*status & up->port.ignore_status_mask) == 0) {
-                       tty->flip.flag_buf_ptr++;
-                       tty->flip.char_buf_ptr++;
-                       tty->flip.count++;
-               }
-               if ((*status & UART_LSR_OE) &&
-                   tty->flip.count < TTY_FLIPBUF_SIZE) {
+               if ((*status & up->port.ignore_status_mask) == 0)
+                       tty_insert_flip_char(tty, ch, flag);
+
+               if (*status & UART_LSR_OE) {
                        /*
                         * Overrun is special, since it's reported
                         * immediately, and doesn't affect the current
                         * character.
                         */
-                       *tty->flip.flag_buf_ptr = TTY_OVERRUN;
-                       tty->flip.flag_buf_ptr++;
-                       tty->flip.char_buf_ptr++;
-                       tty->flip.count++;
+                       tty_insert_flip_char(tty, 0, TTY_OVERRUN);
                }
        ignore_char:
                *status = serial_in(up, UART_LSR);
@@ -425,7 +414,7 @@ static _INLINE_ void transmit_chars(struct uart_sio_port *up)
                return;
        }
        if (uart_circ_empty(xmit) || uart_tx_stopped(&up->port)) {
-               m32r_sio_stop_tx(&up->port, 0);
+               m32r_sio_stop_tx(&up->port);
                return;
        }
 
@@ -446,7 +435,7 @@ static _INLINE_ void transmit_chars(struct uart_sio_port *up)
        DEBUG_INTR("THRE...");
 
        if (uart_circ_empty(xmit))
-               m32r_sio_stop_tx(&up->port, 0);
+               m32r_sio_stop_tx(&up->port);
 }
 
 /*
@@ -1123,7 +1112,7 @@ static int __init m32r_sio_console_setup(struct console *co, char *options)
        return uart_set_options(port, co, baud, parity, bits, flow);
 }
 
-extern struct uart_driver m32r_sio_reg;
+static struct uart_driver m32r_sio_reg;
 static struct console m32r_sio_console = {
        .name           = "ttyS",
        .write          = m32r_sio_console_write,