diff options
| author | Sebastian Reichel <sre@kernel.org> | 2014-05-06 15:44:50 +0200 |
|---|---|---|
| committer | Sebastian Reichel <sre@kernel.org> | 2014-05-06 15:44:50 +0200 |
| commit | 695f5ec02203ef23f127eacb86991d23307f3c6f (patch) | |
| tree | ecb9c29268fa34559dfa06472d991bc5d92708be /drivers/tty/serial/8250/8250_dma.c | |
| parent | 5bdeae302496a8ac49848f4fed26b1d87a67d966 (diff) | |
| parent | 793ec5f7dccf95c0d6d5d57a925a13261a7cbd2b (diff) | |
| download | linux-695f5ec02203ef23f127eacb86991d23307f3c6f.tar.bz2 | |
Merge branch 'n900-modem-support' into n900-dt-with-ssin900-dt-with-ssi
Conflicts:
arch/arm/boot/dts/omap3-n900.dts
Diffstat (limited to 'drivers/tty/serial/8250/8250_dma.c')
| -rw-r--r-- | drivers/tty/serial/8250/8250_dma.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/drivers/tty/serial/8250/8250_dma.c b/drivers/tty/serial/8250/8250_dma.c index 7046769608d4..ab9096dc3849 100644 --- a/drivers/tty/serial/8250/8250_dma.c +++ b/drivers/tty/serial/8250/8250_dma.c @@ -20,12 +20,15 @@ static void __dma_tx_complete(void *param) struct uart_8250_port *p = param; struct uart_8250_dma *dma = p->dma; struct circ_buf *xmit = &p->port.state->xmit; - - dma->tx_running = 0; + unsigned long flags; dma_sync_single_for_cpu(dma->txchan->device->dev, dma->tx_addr, UART_XMIT_SIZE, DMA_TO_DEVICE); + spin_lock_irqsave(&p->port.lock, flags); + + dma->tx_running = 0; + xmit->tail += dma->tx_size; xmit->tail &= UART_XMIT_SIZE - 1; p->port.icount.tx += dma->tx_size; @@ -35,6 +38,8 @@ static void __dma_tx_complete(void *param) if (!uart_circ_empty(xmit) && !uart_tx_stopped(&p->port)) serial8250_tx_dma(p); + + spin_unlock_irqrestore(&p->port.lock, flags); } static void __dma_rx_complete(void *param) |