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Message-ID: <30fa035a-709f-58cd-fc1e-fef1367dc6dd@0882a8b5-c6c3-11e9-b005-00805fc181fe.uuid.home.arpa>
Date: Sun, 27 Aug 2023 19:23:39 +0100
From: Simon Arlott <simon@...iron.net>
To: Jiri Slaby <jirislaby@...nel.org>,
Oliver Neukum <oneukum@...e.com>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc: linux-kernel@...r.kernel.org, linux-usb@...r.kernel.org,
linux-serial@...r.kernel.org
Subject: [PATCH (v2)] docs: ABI: sysfs-tty: close times are in centiseconds
The times for close_delay and closing_wait are in centiseconds, not
milliseconds. Fix the documentation and add details of special values.
Signed-off-by: Simon Arlott <simon@...iron.net>
---
On 25/08/2023 06:33, Jiri Slaby wrote:
> And I would use "centiseconds" instead, which is used (IMO) in these cases.
It's used in a few places, but the documentation has no "centiseconds"
and a couple of "hundredths". I've changed it anyway.
Documentation/ABI/testing/sysfs-tty | 15 +++++++++------
1 file changed, 9 insertions(+), 6 deletions(-)
diff --git a/Documentation/ABI/testing/sysfs-tty b/Documentation/ABI/testing/sysfs-tty
index 820e412d38a8..895c47f05f6f 100644
--- a/Documentation/ABI/testing/sysfs-tty
+++ b/Documentation/ABI/testing/sysfs-tty
@@ -87,19 +87,22 @@ What: /sys/class/tty/ttyS<x>/close_delay
Date: October 2012
Contact: Alan Cox <alan@...ux.intel.com>
Description:
- Show the closing delay time for this port in ms.
+ Show the closing delay time for this port in centiseconds.
- These sysfs values expose the TIOCGSERIAL interface via
- sysfs rather than via ioctls.
+ These sysfs values expose the TIOCGSERIAL interface via
+ sysfs rather than via ioctls.
What: /sys/class/tty/ttyS<x>/closing_wait
Date: October 2012
Contact: Alan Cox <alan@...ux.intel.com>
Description:
- Show the close wait time for this port in ms.
+ Show the close wait time for this port in centiseconds.
- These sysfs values expose the TIOCGSERIAL interface via
- sysfs rather than via ioctls.
+ Waiting forever is represented as 0. If waiting on close is
+ disabled then the value is 65535.
+
+ These sysfs values expose the TIOCGSERIAL interface via
+ sysfs rather than via ioctls.
What: /sys/class/tty/ttyS<x>/custom_divisor
Date: October 2012
--
2.37.0
--
Simon Arlott
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