diff options
Diffstat (limited to 'drivers/tty/serial/sh-sci.c')
| -rw-r--r-- | drivers/tty/serial/sh-sci.c | 19 |
1 files changed, 12 insertions, 7 deletions
diff --git a/drivers/tty/serial/sh-sci.c b/drivers/tty/serial/sh-sci.c index 61b7fd2729cd..bf461cf99616 100644 --- a/drivers/tty/serial/sh-sci.c +++ b/drivers/tty/serial/sh-sci.c @@ -1229,17 +1229,20 @@ static void sci_dma_tx_complete(void *arg) port->icount.tx += sg_dma_len(&s->sg_tx); async_tx_ack(s->desc_tx); - s->cookie_tx = -EINVAL; s->desc_tx = NULL; if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS) uart_write_wakeup(port); if (!uart_circ_empty(xmit)) { + s->cookie_tx = 0; schedule_work(&s->work_tx); - } else if (port->type == PORT_SCIFA || port->type == PORT_SCIFB) { - u16 ctrl = sci_in(port, SCSCR); - sci_out(port, SCSCR, ctrl & ~SCSCR_TIE); + } else { + s->cookie_tx = -EINVAL; + if (port->type == PORT_SCIFA || port->type == PORT_SCIFB) { + u16 ctrl = sci_in(port, SCSCR); + sci_out(port, SCSCR, ctrl & ~SCSCR_TIE); + } } spin_unlock_irqrestore(&port->lock, flags); @@ -1338,7 +1341,7 @@ static void sci_submit_rx(struct sci_port *s) struct scatterlist *sg = &s->sg_rx[i]; struct dma_async_tx_descriptor *desc; - desc = chan->device->device_prep_slave_sg(chan, + desc = dmaengine_prep_slave_sg(chan, sg, 1, DMA_DEV_TO_MEM, DMA_PREP_INTERRUPT); if (desc) { @@ -1453,7 +1456,7 @@ static void work_fn_tx(struct work_struct *work) BUG_ON(!sg_dma_len(sg)); - desc = chan->device->device_prep_slave_sg(chan, + desc = dmaengine_prep_slave_sg(chan, sg, s->sg_len_tx, DMA_MEM_TO_DEV, DMA_PREP_INTERRUPT | DMA_CTRL_ACK); if (!desc) { @@ -1501,8 +1504,10 @@ static void sci_start_tx(struct uart_port *port) } if (s->chan_tx && !uart_circ_empty(&s->port.state->xmit) && - s->cookie_tx < 0) + s->cookie_tx < 0) { + s->cookie_tx = 0; schedule_work(&s->work_tx); + } #endif if (!s->chan_tx || port->type == PORT_SCIFA || port->type == PORT_SCIFB) { |