diff options
| author | Paul Mundt <lethal@linux-sh.org> | 2008-12-16 13:29:38 +0300 |
|---|---|---|
| committer | Paul Mundt <lethal@linux-sh.org> | 2008-12-22 12:44:43 +0300 |
| commit | d830fa4584a4015989b9b396a80779f28f277baa (patch) | |
| tree | 0adfcdde0b697d72adc8f0d88c1ce0a4c3efedce /drivers/serial | |
| parent | 762c69e3cad67a5cc5a01ba74e0b552ae4615258 (diff) | |
| download | linux-d830fa4584a4015989b9b396a80779f28f277baa.tar.xz | |
serial: sh-sci: Tidy up fifo overrun error handling.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'drivers/serial')
| -rw-r--r-- | drivers/serial/sh-sci.c | 45 | ||||
| -rw-r--r-- | drivers/serial/sh-sci.h | 11 |
2 files changed, 29 insertions, 27 deletions
diff --git a/drivers/serial/sh-sci.c b/drivers/serial/sh-sci.c index 0251077693d1..b0feea493985 100644 --- a/drivers/serial/sh-sci.c +++ b/drivers/serial/sh-sci.c @@ -625,6 +625,27 @@ static inline int sci_handle_errors(struct uart_port *port) return copied; } +static inline int sci_handle_fifo_overrun(struct uart_port *port) +{ + struct tty_struct *tty = port->info->port.tty; + int copied = 0; + + if (port->type != PORT_SCIF) + return 0; + + if ((sci_in(port, SCLSR) & SCIF_ORER) != 0) { + sci_out(port, SCLSR, 0); + + tty_insert_flip_char(tty, 0, TTY_OVERRUN); + tty_flip_buffer_push(tty); + + dev_notice(port->dev, "overrun error\n"); + copied++; + } + + return copied; +} + static inline int sci_handle_breaks(struct uart_port *port) { int copied = 0; @@ -647,20 +668,11 @@ static inline int sci_handle_breaks(struct uart_port *port) dev_dbg(port->dev, "BREAK detected\n"); } -#if defined(SCIF_ORER) - /* XXX: Handle SCIF overrun error */ - if (port->type != PORT_SCI && (sci_in(port, SCLSR) & SCIF_ORER) != 0) { - sci_out(port, SCLSR, 0); - if (tty_insert_flip_char(tty, 0, TTY_OVERRUN)) { - copied++; - dev_notice(port->dev, "overrun error\n"); - } - } -#endif - if (copied) tty_flip_buffer_push(tty); + copied += sci_handle_fifo_overrun(port); + return copied; } @@ -698,16 +710,7 @@ static irqreturn_t sci_er_interrupt(int irq, void *ptr) sci_out(port, SCxSR, SCxSR_RDxF_CLEAR(port)); } } else { -#if defined(SCIF_ORER) - if ((sci_in(port, SCLSR) & SCIF_ORER) != 0) { - struct tty_struct *tty = port->info->port.tty; - - sci_out(port, SCLSR, 0); - tty_insert_flip_char(tty, 0, TTY_OVERRUN); - tty_flip_buffer_push(tty); - dev_notice(port->dev, "overrun error\n"); - } -#endif + sci_handle_fifo_overrun(port); sci_rx_interrupt(irq, ptr); } diff --git a/drivers/serial/sh-sci.h b/drivers/serial/sh-sci.h index 6da755d63529..4479a91e2479 100644 --- a/drivers/serial/sh-sci.h +++ b/drivers/serial/sh-sci.h @@ -232,6 +232,10 @@ # define SCIF_TXROOM_MAX 16 #endif +#ifndef SCIF_ORER +#define SCIF_ORER 0x0000 +#endif + #define SCxSR_TEND(port) (((port)->type == PORT_SCI) ? SCI_TEND : SCIF_TEND) #define SCxSR_ERRORS(port) (((port)->type == PORT_SCI) ? SCI_ERRORS : SCIF_ERRORS) #define SCxSR_RDxF(port) (((port)->type == PORT_SCI) ? SCI_RDRF : SCIF_RDF) @@ -239,12 +243,7 @@ #define SCxSR_FER(port) (((port)->type == PORT_SCI) ? SCI_FER : SCIF_FER) #define SCxSR_PER(port) (((port)->type == PORT_SCI) ? SCI_PER : SCIF_PER) #define SCxSR_BRK(port) (((port)->type == PORT_SCI) ? 0x00 : SCIF_BRK) - -#if defined(CONFIG_CPU_SUBTYPE_SH7705) -# define SCxSR_ORER(port) (((port)->type == PORT_SCI) ? SCI_ORER : SCIF_ORER) -#else -# define SCxSR_ORER(port) (((port)->type == PORT_SCI) ? SCI_ORER : 0x0000) -#endif +#define SCxSR_ORER(port) (((port)->type == PORT_SCI) ? SCI_ORER : SCIF_ORER) #if defined(CONFIG_CPU_SUBTYPE_SH7705) || \ defined(CONFIG_CPU_SUBTYPE_SH7720) || \ |