diff options
| author | Clark Williams <williams@redhat.com> | 2012-04-04 10:52:26 -0500 |
|---|---|---|
| committer | Clark Williams <williams@redhat.com> | 2012-04-04 10:52:26 -0500 |
| commit | 2d93eaf2d4ace5853a74a4b0596f601aa62cb840 (patch) | |
| tree | b0a2e2083c1749c4e3b8ae23db7bb13a7ca9aafe /drivers/tty/serial/sh-sci.c | |
| parent | 003133585fc61d7bd36d3a097d7fde62e64a9550 (diff) | |
| parent | 23d8c3f8f494c8516c9b4c05529e118e6a485956 (diff) | |
Merge commit 'v3.2.14' into rt-3.2.14-rt23v3.2.14-rt23
Diffstat (limited to 'drivers/tty/serial/sh-sci.c')
| -rw-r--r-- | drivers/tty/serial/sh-sci.c | 15 |
1 files changed, 10 insertions, 5 deletions
diff --git a/drivers/tty/serial/sh-sci.c b/drivers/tty/serial/sh-sci.c index aff9d612dff0..829e51a20eee 100644 --- a/drivers/tty/serial/sh-sci.c +++ b/drivers/tty/serial/sh-sci.c @@ -1123,17 +1123,20 @@ 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); @@ -1395,8 +1398,10 @@ 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) { |