linux-kernel - [PATCH] serial: speed setup failure reporting

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Message-ID: <20080103165507.3fe5b7a4@lxorguk.ukuu.org.uk>
Date:	Thu, 3 Jan 2008 16:55:07 +0000
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	akpm@...l.org, linux-kernel@...r.kernel.org
Subject: [PATCH] serial: speed setup failure reporting

Invalid speeds are forced to 9600. Update the code for this to encode new
style baud rates properly.

Signed-off-by: Alan Cox <alan@...hat.com>

diff -u --new-file --recursive --exclude-from /usr/src/exclude linux.vanilla-2.6.24-rc6-mm1/drivers/serial/serial_core.c linux-2.6.24-rc6-mm1/drivers/serial/serial_core.c
--- linux.vanilla-2.6.24-rc6-mm1/drivers/serial/serial_core.c	2008-01-02 16:04:23.000000000 +0000
+++ linux-2.6.24-rc6-mm1/drivers/serial/serial_core.c	2008-01-02 16:17:50.000000000 +0000
@@ -372,7 +372,8 @@
 		 */
 		termios->c_cflag &= ~CBAUD;
 		if (old) {
-			termios->c_cflag |= old->c_cflag & CBAUD;
+			baud = tty_termios_baud_rate(old);
+			tty_termios_encode_baud_rate(termios, baud, baud);
 			old = NULL;
 			continue;
 		}
@@ -381,7 +382,7 @@
 		 * As a last resort, if the quotient is zero,
 		 * default to 9600 bps
 		 */
-		termios->c_cflag |= B9600;
+		tty_termios_encode_baud_rate(termios, 9600, 9600);
 	}
 
 	return 0;
--
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