The times for close_delay and closing_wait are in hundredths of a second, not milliseconds. Fix the documentation instead of trying to use millisecond values (which would have to be rounded). Signed-off-by: Simon Arlott <simon@xxxxxxxxxxx> --- If you'd prefer, I can fold the second part of this into my previous patch which shouldn't have documented it as milliseconds in the first place (but I copied it from the other entry). Documentation/ABI/testing/sysfs-tty | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-) diff --git a/Documentation/ABI/testing/sysfs-tty b/Documentation/ABI/testing/sysfs-tty index e04e322af568..6ee878771f51 100644 --- a/Documentation/ABI/testing/sysfs-tty +++ b/Documentation/ABI/testing/sysfs-tty @@ -87,7 +87,8 @@ 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 hundredths + of a second. These sysfs values expose the TIOCGSERIAL interface via sysfs rather than via ioctls. @@ -96,7 +97,8 @@ 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 hundredths of + a second. These sysfs values expose the TIOCGSERIAL interface via sysfs rather than via ioctls. @@ -166,7 +168,8 @@ What: /sys/class/tty/ttyACM0/close_delay Date: August 2023 Contact: linux-usb@xxxxxxxxxxxxxxx Description: - Set the closing delay time for this port in ms. + Set the closing delay time for this port in hundredths of a + second. These sysfs values expose the TIOCGSERIAL interface via sysfs rather than via ioctls. @@ -175,7 +178,8 @@ What: /sys/class/tty/ttyACM0/closing_wait Date: August 2023 Contact: linux-usb@xxxxxxxxxxxxxxx Description: - Set the close wait time for this port in ms. + Set the close wait time for this port in hundredths of a + second. These sysfs values expose the TIOCGSERIAL interface via sysfs rather than via ioctls. -- 2.37.0 -- Simon Arlott