diff options
| author |   Uwe Kleine-König <u.kleine-koenig@pengutronix.de> | 2018-03-02 11:07:25 +0100 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-03-09 10:21:01 -0800 |
| commit | dedc64e02f5da1c7bd0b4ec232341047a8b0142b (patch) | |
| tree | 46fda2471e8defc0af3be5ff302075d3b0404ab7 /drivers/tty/serial | |
| parent | serial: imx: setup fifo waterlevel before enabling aging timer (diff) | |
| download | linux-dev-dedc64e02f5da1c7bd0b4ec232341047a8b0142b.tar.xz linux-dev-dedc64e02f5da1c7bd0b4ec232341047a8b0142b.zip | |
serial: imx: Stop to receive in .stop_rx()
When the UART is used in DMA mode, .stop_rx() does nothing if the port
isn't suspended. This is wrong as .stop_rx() should stop receiving
characters unconditionally. When the port is about to be closed the DMA
channel is stopped in .shutdown(), so this isn't necessary to be in
.stop_rx() here, too.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty/serial')
| -rw-r--r-- | drivers/tty/serial/imx.c | 9 |
1 files changed, 0 insertions, 9 deletions
diff --git a/drivers/tty/serial/imx.c b/drivers/tty/serial/imx.c index 9b92c49fc174..0ea98827ecbe 100644 --- a/drivers/tty/serial/imx.c +++ b/drivers/tty/serial/imx.c @@ -442,15 +442,6 @@ static void imx_stop_rx(struct uart_port *port) struct imx_port *sport = (struct imx_port *)port; u32 ucr1, ucr2; - if (sport->dma_is_rxing) { - if (sport->port.suspended) { - dmaengine_terminate_all(sport->dma_chan_rx); - sport->dma_is_rxing = 0; - } else { - return; - } - } - ucr2 = imx_uart_readl(sport, UCR2); imx_uart_writel(sport, ucr2 & ~UCR2_RXEN, UCR2); |