2017-01-13 10:42:08 +00:00
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From 9a061cea4477f26a1dfcc0a08dc20575016e91df Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?Uwe=20Kleine-K=C3=B6nig?= <u.kleine-koenig@pengutronix.de>
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Date: Thu, 24 Mar 2016 14:24:20 +0100
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Subject: [PATCH 1/3] serial: imx: fix polarity of RI
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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When in DTE mode, the bit USR2_RIIN is active low. So invert the logic
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accordingly.
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Fixes: 90ebc4838666 ("serial: imx: repair and complete handshaking")
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Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
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Signed-off-by: Petr Štetiar <ynezz@true.cz>
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---
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drivers/tty/serial/imx.c | 6 +++---
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1 file changed, 3 insertions(+), 3 deletions(-)
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--- a/drivers/tty/serial/imx.c
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+++ b/drivers/tty/serial/imx.c
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2017-01-21 17:30:10 +00:00
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@@ -817,9 +817,9 @@ static unsigned int imx_get_mctrl(struct
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2017-01-13 10:42:08 +00:00
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if (!(usr1 & USR2_DCDIN))
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tmp |= TIOCM_CAR;
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- /* in DCE mode RIIN is always 0 */
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- if (readl(sport->port.membase + USR2) & USR2_RIIN)
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- tmp |= TIOCM_RI;
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+ if (sport->dte_mode)
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+ if (!(readl(sport->port.membase + USR2) & USR2_RIIN))
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+ tmp |= TIOCM_RI;
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return tmp;
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}
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