diff options
Diffstat (limited to 'drivers/tty/serial/sh-sci.c')
| -rw-r--r-- | drivers/tty/serial/sh-sci.c | 25 |
1 files changed, 17 insertions, 8 deletions
diff --git a/drivers/tty/serial/sh-sci.c b/drivers/tty/serial/sh-sci.c index e032963989f..5b50c792ad5 100644 --- a/drivers/tty/serial/sh-sci.c +++ b/drivers/tty/serial/sh-sci.c @@ -858,7 +858,7 @@ static int sci_handle_fifo_overrun(struct uart_port *port) tty_insert_flip_char(tport, 0, TTY_OVERRUN); tty_flip_buffer_push(tport); - dev_notice(port->dev, "overrun error\n"); + dev_dbg(port->dev, "overrun error\n"); copied++; } @@ -997,12 +997,15 @@ static inline unsigned long port_rx_irq_mask(struct uart_port *port) static irqreturn_t sci_mpxed_interrupt(int irq, void *ptr) { unsigned short ssr_status, scr_status, err_enabled; + unsigned short slr_status = 0; struct uart_port *port = ptr; struct sci_port *s = to_sci_port(port); irqreturn_t ret = IRQ_NONE; ssr_status = serial_port_in(port, SCxSR); scr_status = serial_port_in(port, SCSCR); + if (port->type == PORT_SCIF || port->type == PORT_HSCIF) + slr_status = serial_port_in(port, SCLSR); err_enabled = scr_status & port_rx_irq_mask(port); /* Tx Interrupt */ @@ -1015,8 +1018,11 @@ static irqreturn_t sci_mpxed_interrupt(int irq, void *ptr) * DR flags */ if (((ssr_status & SCxSR_RDxF(port)) || s->chan_rx) && - (scr_status & SCSCR_RIE)) + (scr_status & SCSCR_RIE)) { + if (port->type == PORT_SCIF || port->type == PORT_HSCIF) + sci_handle_fifo_overrun(port); ret = sci_rx_interrupt(irq, ptr); + } /* Error Interrupt */ if ((ssr_status & SCxSR_ERRORS(port)) && err_enabled) @@ -1026,6 +1032,12 @@ static irqreturn_t sci_mpxed_interrupt(int irq, void *ptr) if ((ssr_status & SCxSR_BRK(port)) && err_enabled) ret = sci_br_interrupt(irq, ptr); + /* Overrun Interrupt */ + if (port->type == PORT_SCIF || port->type == PORT_HSCIF) { + if (slr_status & 0x01) + sci_handle_fifo_overrun(port); + } + return ret; } @@ -2605,7 +2617,7 @@ static int sci_probe(struct platform_device *dev) return 0; } -static int sci_suspend(struct device *dev) +static __maybe_unused int sci_suspend(struct device *dev) { struct sci_port *sport = dev_get_drvdata(dev); @@ -2615,7 +2627,7 @@ static int sci_suspend(struct device *dev) return 0; } -static int sci_resume(struct device *dev) +static __maybe_unused int sci_resume(struct device *dev) { struct sci_port *sport = dev_get_drvdata(dev); @@ -2625,10 +2637,7 @@ static int sci_resume(struct device *dev) return 0; } -static const struct dev_pm_ops sci_dev_pm_ops = { - .suspend = sci_suspend, - .resume = sci_resume, -}; +static SIMPLE_DEV_PM_OPS(sci_dev_pm_ops, sci_suspend, sci_resume); static struct platform_driver sci_driver = { .probe = sci_probe, |