[PATCH (v2)] docs: ABI: sysfs-tty: close times are in centiseconds

[Simon Arlott]

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@xxxxxxxxxxx>
---
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@xxxxxxxxxxxxxxx>
 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@xxxxxxxxxxxxxxx>
 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