Messages in this thread Patch in this message | | | From | Romain Perier <> | Subject | [PATCH v2 3/6] serial: imx: remove CTSC and CTS handling | Date | Wed, 5 Jul 2017 15:07:03 +0200 |
| |
From: Nandor Han <nandor.han@ge.com>
CTSC and CTS are not related to DMA and might add disruption in some cases.
Signed-off-by: Romain Perier <romain.perier@collabora.com> --- drivers/tty/serial/imx.c | 5 ----- 1 file changed, 5 deletions(-)
diff --git a/drivers/tty/serial/imx.c b/drivers/tty/serial/imx.c index 5291b86..dd3ebb4 100644 --- a/drivers/tty/serial/imx.c +++ b/drivers/tty/serial/imx.c @@ -1249,11 +1249,6 @@ static void imx_disable_dma(struct imx_port *sport) imx_stop_rx_dma(sport); imx_stop_tx_dma(sport); - /* clear UCR2 */ - temp = readl(sport->port.membase + UCR2); - temp &= ~(UCR2_CTSC | UCR2_CTS | UCR2_ATEN); - writel(temp, sport->port.membase + UCR2); - imx_setup_ufcr(sport, TXTL_DEFAULT, RXTL_DEFAULT); sport->dma_is_enabled = 0; -- 1.8.3.1
| |