Thread (15 messages) 15 messages, 3 authors, 2015-08-17

RE: [PATCH 1/4] serial: xuartps: Fix termios issue for enabling odd parity

From: Anirudha Sarangi <hidden>
Date: 2015-08-17 16:10:27
Also in: linux-arm-kernel, lkml

Hi,
-----Original Message-----
From: Peter Hurley [mailto:peter@hurleysoftware.com]
Sent: Monday, August 17, 2015 9:09 PM
To: Michal Simek
Cc: linux-kernel@vger.kernel.org; monstr@monstr.eu; Anirudha Sarangi; Soren
Brinkmann; Jiri Slaby; linux-serial@vger.kernel.org; Greg Kroah-Hartman; linux-
arm-kernel@lists.infradead.org
Subject: Re: [PATCH 1/4] serial: xuartps: Fix termios issue for enabling odd parity

On 08/17/2015 03:22 AM, Michal Simek wrote:
quoted
From: Anirudha Sarangi <redacted>

Existing set_termios does not handle the option for enabling odd
parity. This patch fixes it.
NAK. PARODD does not enable parity generation or detection.
What if someone is trying to change from even to odd parity?
In this conditional case, we setup some register bit for the same.
Is the above use case not a valid one?

Regards
Anirudha
Regards,
Peter Hurley
quoted
Signed-off-by: Anirudha Sarangi <redacted>
Signed-off-by: Michal Simek <redacted>
---

 drivers/tty/serial/xilinx_uartps.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/tty/serial/xilinx_uartps.c
b/drivers/tty/serial/xilinx_uartps.c
index 009e0dbc12d2..a3020344ac9d 100644
--- a/drivers/tty/serial/xilinx_uartps.c
+++ b/drivers/tty/serial/xilinx_uartps.c
@@ -723,7 +723,7 @@ static void cdns_uart_set_termios(struct uart_port
*port,
quoted
    else
            cval |= CDNS_UART_MR_STOPMODE_1_BIT; /* 1 STOP bit */

-   if (termios->c_cflag & PARENB) {
+   if ((termios->c_cflag & PARENB) || (termios->c_cflag & PARODD)) {
            /* Mark or Space parity */
            if (termios->c_cflag & CMSPAR) {
                    if (termios->c_cflag & PARODD)


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