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