lkml.org 
[lkml]   [2018]   [Jul]   [15]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 1/3] tty: fix termios input-speed encoding
Date
Make sure to clear the CIBAUD bits before OR-ing the new mask when
encoding the termios input baud rate.

This could otherwise lead to an incorrect input rate being reported back
and incidentally set on subsequent termios updates.

Fixes: edc6afc54968 ("[PATCH] tty: switch to ktermios and new framework")
Signed-off-by: Johan Hovold <johan@kernel.org>
---
drivers/tty/tty_baudrate.c | 3 +++
1 file changed, 3 insertions(+)

diff --git a/drivers/tty/tty_baudrate.c b/drivers/tty/tty_baudrate.c
index 6ff8cdfc9d2a..a7a438f54e69 100644
--- a/drivers/tty/tty_baudrate.c
+++ b/drivers/tty/tty_baudrate.c
@@ -169,6 +169,9 @@ void tty_termios_encode_baud_rate(struct ktermios *termios,
ibinput = 1; /* An input speed was specified */
#endif
termios->c_cflag &= ~CBAUD;
+#ifdef IBSHIFT
+ termios->c_cflag &= ~(CBAUD << IBSHIFT);
+#endif

/*
* Our goal is to find a close match to the standard baud rate
--
2.18.0
\
 
 \ /
  Last update: 2018-07-15 22:07    [W:0.209 / U:0.000 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site