linux-kernel - Re: [PATCH] docs: ABI: sysfs-tty: close times are in hundredths of a second

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Date:   Fri, 25 Aug 2023 07:33:40 +0200
From:   Jiri Slaby <jirislaby@...nel.org>
To:     Simon Arlott <simon@...iron.net>, 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: Re: [PATCH] docs: ABI: sysfs-tty: close times are in hundredths of a
 second

On 24. 08. 23, 9:18, Simon Arlott wrote:
> 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@...iron.net>
> ---
> 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@...ux.intel.com>
>   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@...ux.intel.com>
>   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.

Could you send these two hunks as a separate patch? It's correct 
regardless of your other patch.

And I would use "centiseconds" instead, which is used (IMO) in these cases.

thanks,
-- 
js
suse labs