14 files changed, 108 insertions, 155 deletions

diff --git a/drivers/serial/21285.c b/drivers/serial/21285.c
index 33fbda79f350..0b10169961eb 100644
--- a/drivers/serial/21285.c
+++ b/drivers/serial/21285.c
@@ -126,18 +126,8 @@ static irqreturn_t serial21285_rx_chars(int irq, void *dev_id, struct pt_regs *r
                                 flag = TTY_FRAME;
                 }
 
-                if ((rxs & port->ignore_status_mask) == 0) {
-                        tty_insert_flip_char(tty, ch, flag);
-                }
-                if ((rxs & RXSTAT_OVERRUN) &&
-                    tty->flip.count < TTY_FLIPBUF_SIZE) {
-                        /*
-                         * Overrun is special, since it's reported
-                         * immediately, and doesn't affect the current
-                         * character.
-                         */
-                        tty_insert_flip_char(tty, 0, TTY_OVERRUN);
-                }
+                uart_insert_char(port, rxs, RXSTAT_OVERRUN, ch, flag);
+
                 status = *CSR_UARTFLG;
         }
         tty_flip_buffer_push(tty);
diff --git a/drivers/serial/8250.c b/drivers/serial/8250.c
index 0d9358608fdf..30e8beb71430 100644
--- a/drivers/serial/8250.c
+++ b/drivers/serial/8250.c
@@ -682,8 +682,6 @@ static void autoconfig_16550a(struct uart_8250_port *up)
          * from EXCR1. Switch back to bank 0, change it in MCR. Then
          * switch back to bank 2, read it from EXCR1 again and check
          * it's changed. If so, set baud_base in EXCR2 to 921600. -- dwmw2
-         * On PowerPC we don't want to change baud_base, as we have
-         * a number of different divisors.  -- Tom Rini
          */
         serial_outp(up, UART_LCR, 0);
         status1 = serial_in(up, UART_MCR);
@@ -699,16 +697,25 @@ static void autoconfig_16550a(struct uart_8250_port *up)
                 serial_outp(up, UART_MCR, status1);
 
                 if ((status2 ^ status1) & UART_MCR_LOOP) {
-#ifndef CONFIG_PPC
+                        unsigned short quot;
+
                         serial_outp(up, UART_LCR, 0xE0);
+
+                        quot = serial_inp(up, UART_DLM) << 8;
+                        quot += serial_inp(up, UART_DLL);
+                        quot <<= 3;
+
                         status1 = serial_in(up, 0x04); /* EXCR1 */
                         status1 &= ~0xB0; /* Disable LOCK, mask out PRESL[01] */
                         status1 |= 0x10;  /* 1.625 divisor for baud_base --> 921600 */
                         serial_outp(up, 0x04, status1);
+                        
+                        serial_outp(up, UART_DLL, quot & 0xff);
+                        serial_outp(up, UART_DLM, quot >> 8);
+
                         serial_outp(up, UART_LCR, 0);
-                        up->port.uartclk = 921600*16;
-#endif
 
+                        up->port.uartclk = 921600*16;
                         up->port.type = PORT_NS16550A;
                         up->capabilities |= UART_NATSEMI;
                         return;
@@ -1122,18 +1129,9 @@ receive_chars(struct uart_8250_port *up, int *status, struct pt_regs *regs)
                 }
                 if (uart_handle_sysrq_char(&up->port, ch, regs))
                         goto ignore_char;
-                if ((lsr & up->port.ignore_status_mask) == 0) {
-                        tty_insert_flip_char(tty, ch, flag);
-                }
-                if ((lsr & UART_LSR_OE) &&
-                    tty->flip.count < TTY_FLIPBUF_SIZE) {
-                        /*
-                         * Overrun is special, since it's reported
-                         * immediately, and doesn't affect the current
-                         * character.
-                         */
-                        tty_insert_flip_char(tty, 0, TTY_OVERRUN);
-                }
+
+                uart_insert_char(&up->port, lsr, UART_LSR_OE, ch, flag);
+
         ignore_char:
                 lsr = serial_inp(up, UART_LSR);
         } while ((lsr & UART_LSR_DR) && (max_count-- > 0));
diff --git a/drivers/serial/amba-pl010.c b/drivers/serial/amba-pl010.c
index f2a5e2933c47..2884b310e54d 100644
--- a/drivers/serial/amba-pl010.c
+++ b/drivers/serial/amba-pl010.c
@@ -198,18 +198,8 @@ pl010_rx_chars(struct uart_port *port)
                 if (uart_handle_sysrq_char(port, ch, regs))
                         goto ignore_char;
 
-                if ((rsr & port->ignore_status_mask) == 0) {
-                        tty_insert_flip_char(tty, ch, flag);
-                }
-                if ((rsr & UART01x_RSR_OE) &&
-                    tty->flip.count < TTY_FLIPBUF_SIZE) {
-                        /*
-                         * Overrun is special, since it's reported
-                         * immediately, and doesn't affect the current
-                         * character
-                         */
-                        tty_insert_flip_char(tty, 0, TTY_OVERRUN);
-                }
+                uart_insert_char(port, rsr, UART01x_RSR_OE, ch, flag);
+
         ignore_char:
                 status = UART_GET_FR(port);
         }
diff --git a/drivers/serial/amba-pl011.c b/drivers/serial/amba-pl011.c
index d5cbef3fe8b6..7db88ee18f75 100644
--- a/drivers/serial/amba-pl011.c
+++ b/drivers/serial/amba-pl011.c
@@ -163,18 +163,8 @@ pl011_rx_chars(struct uart_amba_port *uap)
                 if (uart_handle_sysrq_char(&uap->port, ch, regs))
                         goto ignore_char;
 
-                if ((rsr & uap->port.ignore_status_mask) == 0) {
-                        tty_insert_flip_char(tty, ch, flag);
-                }
-                if ((rsr & UART01x_RSR_OE) &&
-                    tty->flip.count < TTY_FLIPBUF_SIZE) {
-                        /*
-                         * Overrun is special, since it's reported
-                         * immediately, and doesn't affect the current
-                         * character
-                         */
-                        tty_insert_flip_char(tty, 0, TTY_OVERRUN);
-                }
+                uart_insert_char(&uap->port, rsr, UART01x_RSR_OE, ch, flag);
+
         ignore_char:
                 status = readw(uap->port.membase + UART01x_FR);
         }
diff --git a/drivers/serial/clps711x.c b/drivers/serial/clps711x.c
index 6242f3090a96..e92522b33c48 100644
--- a/drivers/serial/clps711x.c
+++ b/drivers/serial/clps711x.c
@@ -143,10 +143,7 @@ static irqreturn_t clps711xuart_int_rx(int irq, void *dev_id, struct pt_regs *re
                  * CHECK: does overrun affect the current character?
                  * ASSUMPTION: it does not.
                  */
-                if ((ch & port->ignore_status_mask & ~RXSTAT_OVERRUN) == 0)
-                        tty_insert_flip_char(tty, ch, flg);
-                if ((ch & ~port->ignore_status_mask & RXSTAT_OVERRUN) == 0)
-                        tty_insert_flip_char(tty, 0, TTY_OVERRUN);
+                uart_insert_char(port, ch, UARTDR_OVERR, ch, flg);
 
         ignore_char:
                 status = clps_readl(SYSFLG(port));
diff --git a/drivers/serial/pxa.c b/drivers/serial/pxa.c
index 51d8a49f4477..9dc151d8fa61 100644
--- a/drivers/serial/pxa.c
+++ b/drivers/serial/pxa.c
@@ -161,20 +161,12 @@ receive_chars(struct uart_pxa_port *up, int *status, struct pt_regs *regs)
                         else if (*status & UART_LSR_FE)
                                 flag = TTY_FRAME;
                 }
+
                 if (uart_handle_sysrq_char(&up->port, ch, regs))
                         goto ignore_char;
-                if ((*status & up->port.ignore_status_mask) == 0) {
-                        tty_insert_flip_char(tty, ch, flag);
-                }
-                if ((*status & UART_LSR_OE) &&
-                    tty->flip.count < TTY_FLIPBUF_SIZE) {
-                        /*
-                         * Overrun is special, since it's reported
-                         * immediately, and doesn't affect the current
-                         * character.
-                         */
-                        tty_insert_flip_char(tty, 0, TTY_OVERRUN);
-                }
+
+                uart_insert_char(&up->port, *status, UART_LSR_OE, ch, flag);
+
         ignore_char:
                 *status = serial_in(up, UART_LSR);
         } while ((*status & UART_LSR_DR) && (max_count-- > 0));
diff --git a/drivers/serial/s3c2410.c b/drivers/serial/s3c2410.c
index 435750d40a47..2a9f7ade2c9d 100644
--- a/drivers/serial/s3c2410.c
+++ b/drivers/serial/s3c2410.c
@@ -394,20 +394,7 @@ s3c24xx_serial_rx_chars(int irq, void *dev_id, struct pt_regs *regs)
                 if (uart_handle_sysrq_char(port, ch, regs))
                         goto ignore_char;
 
-                if ((uerstat & port->ignore_status_mask) == 0) {
-                        tty_insert_flip_char(tty, ch, flag);
-                }
-
-                if ((uerstat & S3C2410_UERSTAT_OVERRUN) &&
-                    tty->flip.count < TTY_FLIPBUF_SIZE) {
-                        /*
-                         * Overrun is special, since it's reported
-                         * immediately, and doesn't affect the current
-                         * character.
-                         */
-
-                        tty_insert_flip_char(tty, 0, TTY_OVERRUN);
-                }
+                uart_insert_char(port, uerstat, S3C2410_UERSTAT_OVERRUN, ch, flag);
 
         ignore_char:
                 continue;
diff --git a/drivers/serial/sa1100.c b/drivers/serial/sa1100.c
index 157218bc6c6f..22565a67a57c 100644
--- a/drivers/serial/sa1100.c
+++ b/drivers/serial/sa1100.c
@@ -237,10 +237,7 @@ sa1100_rx_chars(struct sa1100_port *sport, struct pt_regs *regs)
                 if (uart_handle_sysrq_char(&sport->port, ch, regs))
                         goto ignore_char;
 
-                if ((status & port->ignore_status_mask & ~UTSR1_TO_SM(UTSR1_ROR)) == 0)
-                        tty_insert_flip_char(tty, ch, flg);
-                if (status & ~port->ignore_status_mask & UTSR1_TO_SM(UTSR1_ROR))
-                        tty_insert_flip_char(tty, 0, TTY_OVERRUN);
+                uart_insert_char(&sport->port, status, UTSR1_TO_SM(UTSR1_ROR), ch, flg);
 
         ignore_char:
                 status = UTSR1_TO_SM(UART_GET_UTSR1(sport)) |
diff --git a/drivers/serial/serial_cs.c b/drivers/serial/serial_cs.c
index 6eeb48f6a482..0d7b65f93e8d 100644
--- a/drivers/serial/serial_cs.c
+++ b/drivers/serial/serial_cs.c
@@ -661,10 +661,10 @@ void serial_config(dev_link_t * link)
         /* Is this a multiport card? */
         tuple->DesiredTuple = CISTPL_MANFID;
         if (first_tuple(handle, tuple, parse) == CS_SUCCESS) {
-                info->manfid = le16_to_cpu(buf[0]);
+                info->manfid = parse->manfid.manf;
                 for (i = 0; i < MULTI_COUNT; i++)
                         if ((info->manfid == multi_id[i].manfid) &&
-                            (le16_to_cpu(buf[1]) == multi_id[i].prodid))
+                            (parse->manfid.card == multi_id[i].prodid))
                                 break;
                 if (i < MULTI_COUNT)
                         info->multi = multi_id[i].multi;
diff --git a/drivers/serial/serial_lh7a40x.c b/drivers/serial/serial_lh7a40x.c
index 85cfa08d3bad..56f269b6bfb1 100644
--- a/drivers/serial/serial_lh7a40x.c
+++ b/drivers/serial/serial_lh7a40x.c
@@ -190,18 +190,7 @@ lh7a40xuart_rx_chars (struct uart_port* port)
                 if (uart_handle_sysrq_char (port, (unsigned char) data, regs))
                         continue;
 
-                if ((data & port->ignore_status_mask) == 0) {
-                        tty_insert_flip_char(tty, data, flag);
-                }
-                if ((data & RxOverrunError)
-                    && tty->flip.count < TTY_FLIPBUF_SIZE) {
-                        /*
-                         * Overrun is special, since it's reported
-                         * immediately, and doesn't affect the current
-                         * character
-                         */
-                        tty_insert_flip_char(tty, 0, TTY_OVERRUN);
-                }
+                uart_insert_char(port, data, RxOverrunError, data, flag);
         }
         tty_flip_buffer_push (tty);
         return;
diff --git a/drivers/serial/serial_txx9.c b/drivers/serial/serial_txx9.c
index 37b2ef297cbe..3f1051a4a13f 100644
--- a/drivers/serial/serial_txx9.c
+++ b/drivers/serial/serial_txx9.c
@@ -350,18 +350,9 @@ receive_chars(struct uart_txx9_port *up, unsigned int *status, struct pt_regs *r
                 }
                 if (uart_handle_sysrq_char(&up->port, ch, regs))
                         goto ignore_char;
-                if ((disr & up->port.ignore_status_mask) == 0) {
-                        tty_insert_flip_char(tty, ch, flag);
-                }
-                if ((disr & TXX9_SIDISR_UOER) &&
-                    tty->flip.count < TTY_FLIPBUF_SIZE) {
-                        /*
-                         * Overrun is special, since it's reported
-                         * immediately, and doesn't affect the current
-                         * character.
-                         */
-                        tty_insert_flip_char(tty, 0, TTY_OVERRUN);
-                }
+
+                uart_insert_char(&up->port, disr, TXX9_SIDISR_UOER, ch, flag);
+
         ignore_char:
                 disr = sio_in(up, TXX9_SIDISR);
         } while (!(disr & TXX9_SIDISR_UVALID) && (max_count-- > 0));
diff --git a/drivers/serial/sunsab.c b/drivers/serial/sunsab.c
index 39b788d95e39..10e2990a40d4 100644
--- a/drivers/serial/sunsab.c
+++ b/drivers/serial/sunsab.c
@@ -61,6 +61,16 @@ struct uart_sunsab_port {
         unsigned char                   pvr_dtr_bit;    /* Which PVR bit is DTR */
         unsigned char                   pvr_dsr_bit;    /* Which PVR bit is DSR */
         int                             type;           /* SAB82532 version     */
+
+        /* Setting configuration bits while the transmitter is active
+         * can cause garbage characters to get emitted by the chip.
+         * Therefore, we cache such writes here and do the real register
+         * write the next time the transmitter becomes idle.
+         */
+        unsigned int                    cached_ebrg;
+        unsigned char                   cached_mode;
+        unsigned char                   cached_pvr;
+        unsigned char                   cached_dafo;
 };
 
 /*
@@ -236,6 +246,7 @@ receive_chars(struct uart_sunsab_port *up,
 }
 
 static void sunsab_stop_tx(struct uart_port *, unsigned int);
+static void sunsab_tx_idle(struct uart_sunsab_port *);
 
 static void transmit_chars(struct uart_sunsab_port *up,
                            union sab82532_irq_status *stat)
@@ -258,6 +269,7 @@ static void transmit_chars(struct uart_sunsab_port *up,
                 return;
 
         set_bit(SAB82532_XPR, &up->irqflags);
+        sunsab_tx_idle(up);
 
         if (uart_circ_empty(xmit) || uart_tx_stopped(&up->port)) {
                 up->interrupt_mask1 |= SAB82532_IMR1_XPR;
@@ -397,21 +409,21 @@ static void sunsab_set_mctrl(struct uart_port *port, unsigned int mctrl)
         struct uart_sunsab_port *up = (struct uart_sunsab_port *) port;
 
         if (mctrl & TIOCM_RTS) {
-                writeb(readb(&up->regs->rw.mode) & ~SAB82532_MODE_FRTS,
-                       &up->regs->rw.mode);
-                writeb(readb(&up->regs->rw.mode) | SAB82532_MODE_RTS,
-                       &up->regs->rw.mode);
+                up->cached_mode &= ~SAB82532_MODE_FRTS;
+                up->cached_mode |= SAB82532_MODE_RTS;
         } else {
-                writeb(readb(&up->regs->rw.mode) | SAB82532_MODE_FRTS,
-                       &up->regs->rw.mode);
-                writeb(readb(&up->regs->rw.mode) | SAB82532_MODE_RTS,
-                       &up->regs->rw.mode);
+                up->cached_mode |= (SAB82532_MODE_FRTS |
+                                    SAB82532_MODE_RTS);
         }
         if (mctrl & TIOCM_DTR) {
-                writeb(readb(&up->regs->rw.pvr) & ~(up->pvr_dtr_bit), &up->regs->rw.pvr);
+                up->cached_pvr &= ~(up->pvr_dtr_bit);
         } else {
-                writeb(readb(&up->regs->rw.pvr) | up->pvr_dtr_bit, &up->regs->rw.pvr);
+                up->cached_pvr |= up->pvr_dtr_bit;
         }
+
+        set_bit(SAB82532_REGS_PENDING, &up->irqflags);
+        if (test_bit(SAB82532_XPR, &up->irqflags))
+                sunsab_tx_idle(up);
 }
 
 /* port->lock is not held.  */
@@ -450,6 +462,25 @@ static void sunsab_stop_tx(struct uart_port *port, unsigned int tty_stop)
 }
 
 /* port->lock held by caller.  */
+static void sunsab_tx_idle(struct uart_sunsab_port *up)
+{
+        if (test_bit(SAB82532_REGS_PENDING, &up->irqflags)) {
+                u8 tmp;
+
+                clear_bit(SAB82532_REGS_PENDING, &up->irqflags);
+                writeb(up->cached_mode, &up->regs->rw.mode);
+                writeb(up->cached_pvr, &up->regs->rw.pvr);
+                writeb(up->cached_dafo, &up->regs->w.dafo);
+
+                writeb(up->cached_ebrg & 0xff, &up->regs->w.bgr);
+                tmp = readb(&up->regs->rw.ccr2);
+                tmp &= ~0xc0;
+                tmp |= (up->cached_ebrg >> 2) & 0xc0;
+                writeb(tmp, &up->regs->rw.ccr2);
+        }
+}
+
+/* port->lock held by caller.  */
 static void sunsab_start_tx(struct uart_port *port, unsigned int tty_start)
 {
         struct uart_sunsab_port *up = (struct uart_sunsab_port *) port;
@@ -517,12 +548,16 @@ static void sunsab_break_ctl(struct uart_port *port, int break_state)
 
         spin_lock_irqsave(&up->port.lock, flags);
 
-        val = readb(&up->regs->rw.dafo);
+        val = up->cached_dafo;
         if (break_state)
                 val |= SAB82532_DAFO_XBRK;
         else
                 val &= ~SAB82532_DAFO_XBRK;
-        writeb(val, &up->regs->rw.dafo);
+        up->cached_dafo = val;
+
+        set_bit(SAB82532_REGS_PENDING, &up->irqflags);
+        if (test_bit(SAB82532_XPR, &up->irqflags))
+                sunsab_tx_idle(up);
 
         spin_unlock_irqrestore(&up->port.lock, flags);
 }
@@ -566,8 +601,9 @@ static int sunsab_startup(struct uart_port *port)
                SAB82532_CCR2_TOE, &up->regs->w.ccr2);
         writeb(0, &up->regs->w.ccr3);
         writeb(SAB82532_CCR4_MCK4 | SAB82532_CCR4_EBRG, &up->regs->w.ccr4);
-        writeb(SAB82532_MODE_RTS | SAB82532_MODE_FCTS |
-               SAB82532_MODE_RAC, &up->regs->w.mode);
+        up->cached_mode = (SAB82532_MODE_RTS | SAB82532_MODE_FCTS |
+                           SAB82532_MODE_RAC);
+        writeb(up->cached_mode, &up->regs->w.mode);
         writeb(SAB82532_RFC_DPS|SAB82532_RFC_RFTH_32, &up->regs->w.rfc);
         
         tmp = readb(&up->regs->rw.ccr0);
@@ -598,7 +634,6 @@ static void sunsab_shutdown(struct uart_port *port)
 {
         struct uart_sunsab_port *up = (struct uart_sunsab_port *) port;
         unsigned long flags;
-        unsigned char tmp;
 
         spin_lock_irqsave(&up->port.lock, flags);
 
@@ -609,14 +644,13 @@ static void sunsab_shutdown(struct uart_port *port)
         writeb(up->interrupt_mask1, &up->regs->w.imr1);
 
         /* Disable break condition */
-        tmp = readb(&up->regs->rw.dafo);
-        tmp &= ~SAB82532_DAFO_XBRK;
-        writeb(tmp, &up->regs->rw.dafo);
+        up->cached_dafo = readb(&up->regs->rw.dafo);
+        up->cached_dafo &= ~SAB82532_DAFO_XBRK;
+        writeb(up->cached_dafo, &up->regs->rw.dafo);
 
         /* Disable Receiver */  
-        tmp = readb(&up->regs->rw.mode);
-        tmp &= ~SAB82532_MODE_RAC;
-        writeb(tmp, &up->regs->rw.mode);
+        up->cached_mode &= ~SAB82532_MODE_RAC;
+        writeb(up->cached_mode, &up->regs->rw.mode);
 
         /*
          * XXX FIXME
@@ -685,7 +719,6 @@ static void sunsab_convert_to_sab(struct uart_sunsab_port *up, unsigned int cfla
                                   unsigned int iflag, unsigned int baud,
                                   unsigned int quot)
 {
-        unsigned int ebrg;
         unsigned char dafo;
         int bits, n, m;
 
@@ -714,10 +747,11 @@ static void sunsab_convert_to_sab(struct uart_sunsab_port *up, unsigned int cfla
         } else {
                 dafo |= SAB82532_DAFO_PAR_EVEN;
         }
+        up->cached_dafo = dafo;
 
         calc_ebrg(baud, &n, &m);
 
-        ebrg = n | (m << 6);
+        up->cached_ebrg = n | (m << 6);
 
         up->tec_timeout = (10 * 1000000) / baud;
         up->cec_timeout = up->tec_timeout >> 2;
@@ -770,16 +804,13 @@ static void sunsab_convert_to_sab(struct uart_sunsab_port *up, unsigned int cfla
         uart_update_timeout(&up->port, cflag,
                             (up->port.uartclk / (16 * quot)));
 
-        /* Now bang the new settings into the chip.  */
-        sunsab_cec_wait(up);
-        sunsab_tec_wait(up);
-        writeb(dafo, &up->regs->w.dafo);
-        writeb(ebrg & 0xff, &up->regs->w.bgr);
-        writeb((readb(&up->regs->rw.ccr2) & ~0xc0) | ((ebrg >> 2) & 0xc0),
-               &up->regs->rw.ccr2);
-
-        writeb(readb(&up->regs->rw.mode) | SAB82532_MODE_RAC, &up->regs->rw.mode);
-
+        /* Now schedule a register update when the chip's
+         * transmitter is idle.
+         */
+        up->cached_mode |= SAB82532_MODE_RAC;
+        set_bit(SAB82532_REGS_PENDING, &up->irqflags);
+        if (test_bit(SAB82532_XPR, &up->irqflags))
+                sunsab_tx_idle(up);
 }
 
 /* port->lock is not held.  */
@@ -1084,11 +1115,13 @@ static void __init sunsab_init_hw(void)
                         up->pvr_dsr_bit = (1 << 3);
                         up->pvr_dtr_bit = (1 << 2);
                 }
-                writeb((1 << 1) | (1 << 2) | (1 << 4), &up->regs->w.pvr);
-                writeb(readb(&up->regs->rw.mode) | SAB82532_MODE_FRTS,
-                       &up->regs->rw.mode);
-                writeb(readb(&up->regs->rw.mode) | SAB82532_MODE_RTS,
-                       &up->regs->rw.mode);
+                up->cached_pvr = (1 << 1) | (1 << 2) | (1 << 4);
+                writeb(up->cached_pvr, &up->regs->w.pvr);
+                up->cached_mode = readb(&up->regs->rw.mode);
+                up->cached_mode |= SAB82532_MODE_FRTS;
+                writeb(up->cached_mode, &up->regs->rw.mode);
+                up->cached_mode |= SAB82532_MODE_RTS;
+                writeb(up->cached_mode, &up->regs->rw.mode);
 
                 up->tec_timeout = SAB82532_MAX_TEC_TIMEOUT;
                 up->cec_timeout = SAB82532_MAX_CEC_TIMEOUT;
diff --git a/drivers/serial/sunsab.h b/drivers/serial/sunsab.h
index 686086fcbbf5..b78e1f7b8050 100644
--- a/drivers/serial/sunsab.h
+++ b/drivers/serial/sunsab.h
@@ -126,6 +126,7 @@ union sab82532_irq_status {
 /* irqflags bits */
 #define SAB82532_ALLS                   0x00000001
 #define SAB82532_XPR                    0x00000002
+#define SAB82532_REGS_PENDING           0x00000004
 
 /* RFIFO Status Byte */
 #define SAB82532_RSTAT_PE               0x80
diff --git a/drivers/serial/vr41xx_siu.c b/drivers/serial/vr41xx_siu.c
index 307886199f2f..5d2ceb623e6f 100644
--- a/drivers/serial/vr41xx_siu.c
+++ b/drivers/serial/vr41xx_siu.c
@@ -412,10 +412,8 @@ static inline void receive_chars(struct uart_port *port, uint8_t *status,
 
                 if (uart_handle_sysrq_char(port, ch, regs))
                         goto ignore_char;
-                if ((lsr & port->ignore_status_mask) == 0)
-                        tty_insert_flip_char(tty, ch, flag);
-                if ((lsr & UART_LSR_OE) && (tty->flip.count < TTY_FLIPBUF_SIZE))
-                        tty_insert_flip_char(tty, 0, TTY_OVERRUN);
+
+                uart_insert_char(port, lsr, UART_LSR_OE, ch, flag);
 
         ignore_char:
                 lsr = siu_read(port, UART_LSR);