[PATCH v2 1/6] serial: imx: fix polarity of RI
From: Uwe Kleine-König <hidden>
Date: 2016-03-24 13:24:20
Also in:
linux-serial
Subsystem:
the rest, tty layer and serial drivers · Maintainers:
Linus Torvalds, Greg Kroah-Hartman, Jiri Slaby
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-K?nig <redacted>
---
drivers/tty/serial/imx.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/tty/serial/imx.c b/drivers/tty/serial/imx.c
index 231e7d5caf6c..bfc4555c63d1 100644
--- a/drivers/tty/serial/imx.c
+++ b/drivers/tty/serial/imx.c@@ -797,9 +797,9 @@ static unsigned int imx_get_hwmctrl(struct imx_port *sport) 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; }
--
2.7.0