diff options
Diffstat (limited to 'drivers/serial/mpc52xx_uart.c')
| -rw-r--r-- | drivers/serial/mpc52xx_uart.c | 46 |
1 files changed, 16 insertions, 30 deletions
diff --git a/drivers/serial/mpc52xx_uart.c b/drivers/serial/mpc52xx_uart.c index 1288d6203e9..61dd17d7bac 100644 --- a/drivers/serial/mpc52xx_uart.c +++ b/drivers/serial/mpc52xx_uart.c @@ -405,17 +405,13 @@ static inline int mpc52xx_uart_int_rx_chars(struct uart_port *port, struct pt_regs *regs) { struct tty_struct *tty = port->info->tty; - unsigned char ch; + unsigned char ch, flag; unsigned short status; /* While we can read, do so ! */ while ( (status = in_be16(&PSC(port)->mpc52xx_psc_status)) & MPC52xx_PSC_SR_RXRDY) { - /* If we are full, just stop reading */ - if (tty->flip.count >= TTY_FLIPBUF_SIZE) - break; - /* Get the char */ ch = in_8(&PSC(port)->mpc52xx_psc_buffer_8); @@ -428,45 +424,35 @@ mpc52xx_uart_int_rx_chars(struct uart_port *port, struct pt_regs *regs) #endif /* Store it */ - *tty->flip.char_buf_ptr = ch; - *tty->flip.flag_buf_ptr = 0; + + flag = TTY_NORMAL; port->icount.rx++; if ( status & (MPC52xx_PSC_SR_PE | MPC52xx_PSC_SR_FE | - MPC52xx_PSC_SR_RB | - MPC52xx_PSC_SR_OE) ) { + MPC52xx_PSC_SR_RB) ) { if (status & MPC52xx_PSC_SR_RB) { - *tty->flip.flag_buf_ptr = TTY_BREAK; + flag = TTY_BREAK; uart_handle_break(port); } else if (status & MPC52xx_PSC_SR_PE) - *tty->flip.flag_buf_ptr = TTY_PARITY; + flag = TTY_PARITY; else if (status & MPC52xx_PSC_SR_FE) - *tty->flip.flag_buf_ptr = TTY_FRAME; - if (status & MPC52xx_PSC_SR_OE) { - /* - * Overrun is special, since it's - * reported immediately, and doesn't - * affect the current character - */ - if (tty->flip.count < (TTY_FLIPBUF_SIZE-1)) { - tty->flip.flag_buf_ptr++; - tty->flip.char_buf_ptr++; - tty->flip.count++; - } - *tty->flip.flag_buf_ptr = TTY_OVERRUN; - } + flag = TTY_FRAME; /* Clear error condition */ out_8(&PSC(port)->command,MPC52xx_PSC_RST_ERR_STAT); } - - tty->flip.char_buf_ptr++; - tty->flip.flag_buf_ptr++; - tty->flip.count++; - + tty_insert_flip_char(tty, ch, flag); + if (status & MPC52xx_PSC_SR_OE) { + /* + * Overrun is special, since it's + * reported immediately, and doesn't + * affect the current character + */ + tty_insert_flip_char(tty, 0, TTY_OVERRUN); + } } tty_flip_buffer_push(tty); |