diff options
| -rw-r--r-- | drivers/tty/serial/imx.c | 14 |
1 files changed, 8 insertions, 6 deletions
diff --git a/drivers/tty/serial/imx.c b/drivers/tty/serial/imx.c index c7683d747c18..db749f768ac4 100644 --- a/drivers/tty/serial/imx.c +++ b/drivers/tty/serial/imx.c @@ -436,12 +436,14 @@ static void imx_stop_rx(struct uart_port *port) struct imx_port *sport = (struct imx_port *)port; unsigned long temp; - /* - * We are maybe in the SMP context, so if the DMA TX thread is running - * on other cpu, we have to wait for it to finish. - */ - if (sport->dma_is_enabled && sport->dma_is_rxing) - return; + if (sport->dma_is_enabled && sport->dma_is_rxing) { + if (sport->port.suspended) { + dmaengine_terminate_all(sport->dma_chan_rx); + sport->dma_is_rxing = 0; + } else { + return; + } + } temp = readl(sport->port.membase + UCR2); writel(temp & ~UCR2_RXEN, sport->port.membase + UCR2); |