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path: root/drivers/serial/mpc52xx_uart.c
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Diffstat (limited to 'drivers/serial/mpc52xx_uart.c')
-rw-r--r--drivers/serial/mpc52xx_uart.c46
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);