Re: [PATCHv4 12/17] pps: timestamp is always passed to dcd_change()

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On Thu, Nov 18, 2010 at 07:01:05PM +0300, Alexander Gordeev wrote:
> Remove the code that gatheres timestamp in pps_tty_dcd_change() in case
> passed ts parameter is NULL because it never happens in the current
> code. Fix comments as well.
> 
> Signed-off-by: Alexander Gordeev <lasaine@xxxxxxxxxxxxx>
> ---
>  Documentation/serial/tty.txt    |    2 +-
>  drivers/pps/clients/pps-ldisc.c |    8 --------
>  include/linux/tty_ldisc.h       |    2 +-
>  3 files changed, 2 insertions(+), 10 deletions(-)
> 
> diff --git a/Documentation/serial/tty.txt b/Documentation/serial/tty.txt
> index 7c90050..540db41 100644
> --- a/Documentation/serial/tty.txt
> +++ b/Documentation/serial/tty.txt
> @@ -107,7 +107,7 @@ write_wakeup()	-	May be called at any point between open and close.
>  
>  dcd_change()	-	Report to the tty line the current DCD pin status
>  			changes and the relative timestamp. The timestamp
> -			can be NULL.
> +			cannot be NULL.

Can you please explain why it cannot be null? O_o

Who does supply the timestamp to dcd_change?

Ciao,

Rodolfo

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