[PATCH] TTY layer buffering revamp

[deliverable/linux.git] / drivers / serial / ip22zilog.c

diff --git a/drivers/serial/ip22zilog.c b/drivers/serial/ip22zilog.c
index ef132349f310d8325122458bea12b52b039d696e..66f117d150650294db0c88fa04308e67e83e37e1 100644 (file)
--- a/drivers/serial/ip22zilog.c
+++ b/drivers/serial/ip22zilog.c
@@ -259,13 +259,7 @@ static void ip22zilog_receive_chars(struct uart_ip22zilog_port *up,
        struct tty_struct *tty = up->port.info->tty;    /* XXX info==NULL? */
 
        while (1) {
-               unsigned char ch, r1;
-
-               if (unlikely(tty->flip.count >= TTY_FLIPBUF_SIZE)) {
-                       tty->flip.work.func((void *)tty);
-                       if (tty->flip.count >= TTY_FLIPBUF_SIZE)
-                               return;         /* XXX Ignores SysRq when we need it most. Fix. */
-               }
+               unsigned char ch, r1, flag;
 
                r1 = read_zsreg(channel, R1);
                if (r1 & (PAR_ERR | Rx_OVR | CRC_ERR)) {
@@ -303,8 +297,7 @@ static void ip22zilog_receive_chars(struct uart_ip22zilog_port *up,
                }
 
                /* A real serial line, record the character and status.  */
-               *tty->flip.char_buf_ptr = ch;
-               *tty->flip.flag_buf_ptr = TTY_NORMAL;
+               flag = TTY_NORMAL;
                up->port.icount.rx++;
                if (r1 & (BRK_ABRT | PAR_ERR | Rx_OVR | CRC_ERR)) {
                        if (r1 & BRK_ABRT) {
@@ -321,28 +314,21 @@ static void ip22zilog_receive_chars(struct uart_ip22zilog_port *up,
                                up->port.icount.overrun++;
                        r1 &= up->port.read_status_mask;
                        if (r1 & BRK_ABRT)
-                               *tty->flip.flag_buf_ptr = TTY_BREAK;
+                               flag = TTY_BREAK;
                        else if (r1 & PAR_ERR)
-                               *tty->flip.flag_buf_ptr = TTY_PARITY;
+                               flag = TTY_PARITY;
                        else if (r1 & CRC_ERR)
-                               *tty->flip.flag_buf_ptr = TTY_FRAME;
+                               flag = TTY_FRAME;
                }
                if (uart_handle_sysrq_char(&up->port, ch, regs))
                        goto next_char;
 
                if (up->port.ignore_status_mask == 0xff ||
-                   (r1 & up->port.ignore_status_mask) == 0) {
-                       tty->flip.flag_buf_ptr++;
-                       tty->flip.char_buf_ptr++;
-                       tty->flip.count++;
-               }
-               if ((r1 & Rx_OVR) &&
-                   tty->flip.count < TTY_FLIPBUF_SIZE) {
-                       *tty->flip.flag_buf_ptr = TTY_OVERRUN;
-                       tty->flip.flag_buf_ptr++;
-                       tty->flip.char_buf_ptr++;
-                       tty->flip.count++;
-               }
+                   (r1 & up->port.ignore_status_mask) == 0)
+                       tty_insert_flip_char(tty, ch, flag);
+
+               if (r1 & Rx_OVR)
+                       tty_insert_flip_char(tty, 0, TTY_OVERRUN);
        next_char:
                ch = readb(&channel->control);
                ZSDELAY();