[PATCH RFC 4/7] serial: imx: set_termios(): do not enable autoRTS if RTS is unset
From: Sergey Organov <hidden>
Date: 2019-06-14 12:13:16
Also in:
linux-serial
Subsystem:
the rest, tty layer and serial drivers · Maintainers:
Linus Torvalds, Greg Kroah-Hartman, Jiri Slaby
set_termios() shouldn't set UCR2_CTSC bit if UCR2_CTS (=TIOCM_RTS) is cleared. Added corresponding check in imx_uart_rts_auto() to fix this. Signed-off-by: Sergey Organov <redacted> --- drivers/tty/serial/imx.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/tty/serial/imx.c b/drivers/tty/serial/imx.c
index 17e2322..8ee910f 100644
--- a/drivers/tty/serial/imx.c
+++ b/drivers/tty/serial/imx.c@@ -405,7 +405,8 @@ static void imx_uart_rts_inactive(struct imx_port *sport, u32 *ucr2) /* called with port.lock taken and irqs caller dependent */ static void imx_uart_rts_auto(struct imx_port *sport, u32 *ucr2) { - *ucr2 |= UCR2_CTSC; + if (*ucr2 & UCR2_CTS) + *ucr2 |= UCR2_CTSC; } /* called with port.lock taken and irqs off */
--
2.10.0.1.g57b01a3
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