[PATCH v2 3/6] serial: imx: remove CTSC and CTS handling

From	Romain Perier <romain.perier@collabora.com>
Newsgroups	linux.kernel
Subject	[PATCH v2 3/6] serial: imx: remove CTSC and CTS handling
Date	2017-07-05 15:10 +0200
Message-ID	<tZSe5-6Cw-5@gated-at.bofh.it> (permalink)
References	<tZSe5-6Cw-3@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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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

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[PATCH v2 3/6] serial: imx: remove CTSC and CTS handling Romain Perier <romain.perier@collabora.com> - 2017-07-05 15:10 +0200
  Re: [PATCH v2 3/6] serial: imx: remove CTSC and CTS handling Uwe Kleine-König          <u.kleine-koenig@pengutronix.de> - 2017-07-05 15:40 +0200
    Re: [PATCH v2 3/6] serial: imx: remove CTSC and CTS handling Clemens Gruber <clemens.gruber@pqgruber.com> - 2017-07-05 16:50 +0200

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