diff options
| -rw-r--r-- | drivers/tty/serial/sh-sci.c | 18 |
1 files changed, 10 insertions, 8 deletions
diff --git a/drivers/tty/serial/sh-sci.c b/drivers/tty/serial/sh-sci.c index 36a11110acf4..5dcd8b382e90 100644 --- a/drivers/tty/serial/sh-sci.c +++ b/drivers/tty/serial/sh-sci.c @@ -1285,12 +1285,6 @@ static void rx_timer_fn(unsigned long arg) spin_lock_irqsave(&port->lock, flags); dev_dbg(port->dev, "DMA Rx timed out\n"); - scr = serial_port_in(port, SCSCR); - if (port->type == PORT_SCIFA || port->type == PORT_SCIFB) { - scr &= ~SCSCR_RDRQE; - enable_irq(s->irqs[SCIx_RXI_IRQ]); - } - serial_port_out(port, SCSCR, scr | SCSCR_RIE); active = sci_dma_rx_find_active(s); if (active < 0) { @@ -1315,10 +1309,18 @@ static void rx_timer_fn(unsigned long arg) tty_flip_buffer_push(&port->state->port); } - spin_unlock_irqrestore(&port->lock, flags); - if (port->type == PORT_SCIFA || port->type == PORT_SCIFB) sci_submit_rx(s); + + /* Direct new serial port interrupts back to CPU */ + scr = serial_port_in(port, SCSCR); + if (port->type == PORT_SCIFA || port->type == PORT_SCIFB) { + scr &= ~SCSCR_RDRQE; + enable_irq(s->irqs[SCIx_RXI_IRQ]); + } + serial_port_out(port, SCSCR, scr | SCSCR_RIE); + + spin_unlock_irqrestore(&port->lock, flags); } static void sci_request_dma(struct uart_port *port) |