diff options
Diffstat (limited to 'drivers/serial')
| -rw-r--r-- | drivers/serial/clps711x.c | 65 | ||||
| -rw-r--r-- | drivers/serial/sa1100.c | 65 |
2 files changed, 51 insertions, 79 deletions
diff --git a/drivers/serial/clps711x.c b/drivers/serial/clps711x.c index e145e19b3fb..6242f3090a9 100644 --- a/drivers/serial/clps711x.c +++ b/drivers/serial/clps711x.c @@ -116,54 +116,43 @@ static irqreturn_t clps711xuart_int_rx(int irq, void *dev_id, struct pt_regs *re * Note that the error handling code is * out of the main execution path */ - if (unlikely(ch & UART_ANY_ERR)) - goto handle_error; + if (unlikely(ch & UART_ANY_ERR)) { + if (ch & UARTDR_PARERR) + port->icount.parity++; + else if (ch & UARTDR_FRMERR) + port->icount.frame++; + if (ch & UARTDR_OVERR) + port->icount.overrun++; - if (uart_handle_sysrq_char(port, ch, regs)) - goto ignore_char; + ch &= port->read_status_mask; - error_return: - tty_insert_flip_char(tty, ch, flg); - ignore_char: - status = clps_readl(SYSFLG(port)); - } - out: - tty_flip_buffer_push(tty); - return IRQ_HANDLED; + if (ch & UARTDR_PARERR) + flg = TTY_PARITY; + else if (ch & UARTDR_FRMERR) + flg = TTY_FRAME; - handle_error: - if (ch & UARTDR_PARERR) - port->icount.parity++; - else if (ch & UARTDR_FRMERR) - port->icount.frame++; - if (ch & UARTDR_OVERR) - port->icount.overrun++; - - if (ch & port->ignore_status_mask) { - if (++ignored > 100) - goto out; - goto ignore_char; - } - ch &= port->read_status_mask; +#ifdef SUPPORT_SYSRQ + port->sysrq = 0; +#endif + } - if (ch & UARTDR_PARERR) - flg = TTY_PARITY; - else if (ch & UARTDR_FRMERR) - flg = TTY_FRAME; + if (uart_handle_sysrq_char(port, ch, regs)) + goto ignore_char; - if (ch & UARTDR_OVERR) { /* * CHECK: does overrun affect the current character? * ASSUMPTION: it does not. */ - tty_insert_flip_char(tty, ch, flg); - ch = 0; - flg = TTY_OVERRUN; + 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); + + ignore_char: + status = clps_readl(SYSFLG(port)); } -#ifdef SUPPORT_SYSRQ - port->sysrq = 0; -#endif - goto error_return; + tty_flip_buffer_push(tty); + return IRQ_HANDLED; } static irqreturn_t clps711xuart_int_tx(int irq, void *dev_id, struct pt_regs *regs) diff --git a/drivers/serial/sa1100.c b/drivers/serial/sa1100.c index 086065210d1..157218bc6c6 100644 --- a/drivers/serial/sa1100.c +++ b/drivers/serial/sa1100.c @@ -214,56 +214,39 @@ sa1100_rx_chars(struct sa1100_port *sport, struct pt_regs *regs) * note that the error handling code is * out of the main execution path */ - if (status & UTSR1_TO_SM(UTSR1_PRE | UTSR1_FRE | UTSR1_ROR)) - goto handle_error; + if (status & UTSR1_TO_SM(UTSR1_PRE | UTSR1_FRE | UTSR1_ROR)) { + if (status & UTSR1_TO_SM(UTSR1_PRE)) + sport->port.icount.parity++; + else if (status & UTSR1_TO_SM(UTSR1_FRE)) + sport->port.icount.frame++; + if (status & UTSR1_TO_SM(UTSR1_ROR)) + sport->port.icount.overrun++; + + status &= sport->port.read_status_mask; + + if (status & UTSR1_TO_SM(UTSR1_PRE)) + flg = TTY_PARITY; + else if (status & UTSR1_TO_SM(UTSR1_FRE)) + flg = TTY_FRAME; + +#ifdef SUPPORT_SYSRQ + sport->port.sysrq = 0; +#endif + } if (uart_handle_sysrq_char(&sport->port, ch, regs)) goto ignore_char; - error_return: - tty_insert_flip_char(tty, ch, flg); + 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); + ignore_char: status = UTSR1_TO_SM(UART_GET_UTSR1(sport)) | UTSR0_TO_SM(UART_GET_UTSR0(sport)); } - out: tty_flip_buffer_push(tty); - return; - - handle_error: - if (status & UTSR1_TO_SM(UTSR1_PRE)) - sport->port.icount.parity++; - else if (status & UTSR1_TO_SM(UTSR1_FRE)) - sport->port.icount.frame++; - if (status & UTSR1_TO_SM(UTSR1_ROR)) - sport->port.icount.overrun++; - - if (status & sport->port.ignore_status_mask) { - if (++ignored > 100) - goto out; - goto ignore_char; - } - - status &= sport->port.read_status_mask; - - if (status & UTSR1_TO_SM(UTSR1_PRE)) - flg = TTY_PARITY; - else if (status & UTSR1_TO_SM(UTSR1_FRE)) - flg = TTY_FRAME; - - if (status & UTSR1_TO_SM(UTSR1_ROR)) { - /* - * overrun does *not* affect the character - * we read from the FIFO - */ - tty_insert_flip_char(tty, ch, flg); - ch = 0; - flg = TTY_OVERRUN; - } -#ifdef SUPPORT_SYSRQ - sport->port.sysrq = 0; -#endif - goto error_return; } static void sa1100_tx_chars(struct sa1100_port *sport) |