From d8a5c0d6a4b62e320814601b91a25926c2bfb991 Mon Sep 17 00:00:00 2001 From: Simon Arlott Date: Sun, 27 Aug 2023 19:23:39 +0100 Subject: [PATCH] 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 Link: https://lore.kernel.org/r/30fa035a-709f-58cd-fc1e-fef1367dc6dd@0882a8b5-c6c3-11e9-b005-00805fc181fe.uuid.home.arpa Signed-off-by: Greg Kroah-Hartman --- 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/close_delay Date: October 2012 Contact: Alan Cox 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/closing_wait Date: October 2012 Contact: Alan Cox 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/custom_divisor Date: October 2012