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authorLinus Torvalds <torvalds@linux-foundation.org>2012-03-30 00:09:17 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2012-03-30 00:09:17 -0700
commitf52b69f86e27903d6896ed5fa7cd280fec8de532 (patch)
tree0b213c61386153800afb459ca33e091bdec94570 /drivers/tty
parent2f7fa1be66dce77608330c5eb918d6360b5525f2 (diff)
parentb7e68d6876dfbab087bc3859211a9efc74cbe30c (diff)
downloadop-kernel-dev-f52b69f86e27903d6896ed5fa7cd280fec8de532.zip
op-kernel-dev-f52b69f86e27903d6896ed5fa7cd280fec8de532.tar.gz
Merge tag 'sh-for-linus' of git://github.com/pmundt/linux-sh
Pull SuperH updates from Paul Mundt. * tag 'sh-for-linus' of git://github.com/pmundt/linux-sh: (25 commits) sh: Support I/O space swapping where needed. sh: use set_current_blocked() and block_sigmask() sh: no need to reset handler if SA_ONESHOT sh: intc: Fix up section mismatch for intc_ack_data sh: select ARCH_DISCARD_MEMBLOCK. sh: Consolidate duplicate _32/_64 unistd definitions. sh: ecovec: switch SDHI controllers to card polling sh: Avoid exporting unimplemented syscalls. sh: add platform_device for RSPI in setup-sh7757 SH: pci-sh7780: enable big-endian operation. serial: sh-sci: fix a race of DMA submit_tx on transfer sh: dma: Collect up CHCR of SH7763, SH7764, SH7780 and SH7785 sh: dma: Collect up CHCR of SH7723 and SH7730 sh/next: Fix build fail by asm/system.h in asm/bitops.h arch/sh/drivers/dma/{dma-g2,dmabrg}.c: ensure arguments to request_irq and free_irq are compatible sh: cpufreq: Wire up scaling_available_freqs support. sh: cpufreq: notify about rate rounding fallback. sh: cpufreq: Support CPU clock frequency table. sh: cpufreq: struct device lookup from CPU topology. sh: cpufreq: percpu struct clk accounting. ...
Diffstat (limited to 'drivers/tty')
-rw-r--r--drivers/tty/serial/sh-sci.c15
1 files changed, 10 insertions, 5 deletions
diff --git a/drivers/tty/serial/sh-sci.c b/drivers/tty/serial/sh-sci.c
index f8db8a7..bf461cf 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);
@@ -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) {
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