Bug 144127 - termios(4) man page wrongly claims CCTS_OFLOW/CRTSCTS is unused
Summary: termios(4) man page wrongly claims CCTS_OFLOW/CRTSCTS is unused
Status: Open
Alias: None
Product: Documentation
Classification: Unclassified
Component: Manual Pages (show other bugs)
Version: Latest
Hardware: Any Any
: Normal Affects Only Me
Assignee: freebsd-bugs (Nobody)
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2010-02-20 09:40 UTC by G. Paul Ziemba
Modified: 2018-04-11 21:05 UTC (History)
1 user (show)

See Also:


Attachments
termios.txt (1.11 KB, text/plain)
2013-06-10 14:53 UTC, r4721@tormail.org
no flags Details

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Description G. Paul Ziemba 2010-02-20 09:40:01 UTC
termios(4) says:
"The CCTS_OFLOW (CRTSCTS) flag is currently unused."

Yet code in /usr/src/sys/dev/uart/uart_tty.c references CCTS_OFLOW and as far as I know, it works. Hasn't it worked forever?

Fix: 

Proposed replacement text:

    If CCTS_OFLOW (CRTSCTS) is set, transmission is stopped when CTS is lowered and resumed when CTS is raised.

Maybe similar treatment is warranted for CRTS_IFLOW?
Comment 1 Ed Schouten freebsd_committer 2010-02-24 21:35:47 UTC
Responsible Changed
From-To: freebsd-doc->ed

I am Mr. TTY.
Comment 2 r4721@tormail.org 2013-06-10 14:53:31 UTC
patch to fix this.

* change CRTSCTS to show it is the same as CCTS_OFLOW|CRTS_IFLOW
* remove text saying CRTSCTS is unused. it is used and works
* add missing flow control pin configurations
* change definition of MDMBUF to show it is an alias of CCAR_OFLOW
* remove MDMBUF text in line with other flow control pins
Comment 3 Eitan Adler freebsd_committer freebsd_triage 2017-12-31 08:01:20 UTC
For bugs matching the following criteria:

Status: In Progress Changed: (is less than) 2014-06-01

Reset to default assignee and clear in-progress tags.

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