linux-kernel - Re: [PATCH] comedi: comedi_8254: Remove unused comedi_8254_ns_to

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Message-ID: <ZzPKWeqPhY0miHSC@gallifrey>
Date: Tue, 12 Nov 2024 21:36:25 +0000
From: "Dr. David Alan Gilbert" <linux@...blig.org>
To: abbotti@....co.uk, hsweeten@...ionengravers.com
Cc: linux-kernel@...r.kernel.org
Subject: Re: [PATCH] comedi: comedi_8254: Remove unused
 comedi_8254_ns_to_timer

* linux@...blig.org (linux@...blig.org) wrote:
> From: "Dr. David Alan Gilbert" <linux@...blig.org>
> 
> comedi_8254_ns_to_timer() has been unused since it was added
> in commit
> d42b5211d861 ("staging: comedi: comedi_8254: introduce module for 8254 timer support")
> 
> Remove it.
> 
> Signed-off-by: Dr. David Alan Gilbert <linux@...blig.org>

Ping.

Thanks,

Dave

> ---
>  drivers/comedi/drivers/comedi_8254.c | 37 ----------------------------
>  include/linux/comedi/comedi_8254.h   |  2 --
>  2 files changed, 39 deletions(-)
> 
> diff --git a/drivers/comedi/drivers/comedi_8254.c b/drivers/comedi/drivers/comedi_8254.c
> index 6beca2a6d66e..9b7747dab747 100644
> --- a/drivers/comedi/drivers/comedi_8254.c
> +++ b/drivers/comedi/drivers/comedi_8254.c
> @@ -77,10 +77,6 @@
>   * to create a 32-bit rate generator (I8254_MODE2). These functions are
>   * provided to handle the cascaded counters:
>   *
> - * comedi_8254_ns_to_timer()
> - *	Calculates the divisor value needed for a single counter to generate
> - *	ns timing.
> - *
>   * comedi_8254_cascade_ns_to_timer()
>   *	Calculates the two divisor values needed to the generate the pacer
>   *	clock (in ns).
> @@ -472,39 +468,6 @@ void comedi_8254_cascade_ns_to_timer(struct comedi_8254 *i8254,
>  }
>  EXPORT_SYMBOL_GPL(comedi_8254_cascade_ns_to_timer);
>  
> -/**
> - * comedi_8254_ns_to_timer - calculate the divisor value for nanosec timing
> - * @i8254:	comedi_8254 struct for the timer
> - * @nanosec:	the desired ns time
> - * @flags:	comedi_cmd flags
> - */
> -void comedi_8254_ns_to_timer(struct comedi_8254 *i8254,
> -			     unsigned int *nanosec, unsigned int flags)
> -{
> -	unsigned int divisor;
> -
> -	switch (flags & CMDF_ROUND_MASK) {
> -	default:
> -	case CMDF_ROUND_NEAREST:
> -		divisor = DIV_ROUND_CLOSEST(*nanosec, i8254->osc_base);
> -		break;
> -	case CMDF_ROUND_UP:
> -		divisor = DIV_ROUND_UP(*nanosec, i8254->osc_base);
> -		break;
> -	case CMDF_ROUND_DOWN:
> -		divisor = *nanosec / i8254->osc_base;
> -		break;
> -	}
> -	if (divisor < 2)
> -		divisor = 2;
> -	if (divisor > I8254_MAX_COUNT)
> -		divisor = I8254_MAX_COUNT;
> -
> -	*nanosec = divisor * i8254->osc_base;
> -	i8254->next_div = divisor;
> -}
> -EXPORT_SYMBOL_GPL(comedi_8254_ns_to_timer);
> -
>  /**
>   * comedi_8254_set_busy - set/clear the "busy" flag for a given counter
>   * @i8254:	comedi_8254 struct for the timer
> diff --git a/include/linux/comedi/comedi_8254.h b/include/linux/comedi/comedi_8254.h
> index d527f04400df..21be0b7250b4 100644
> --- a/include/linux/comedi/comedi_8254.h
> +++ b/include/linux/comedi/comedi_8254.h
> @@ -129,8 +129,6 @@ void comedi_8254_pacer_enable(struct comedi_8254 *i8254,
>  void comedi_8254_update_divisors(struct comedi_8254 *i8254);
>  void comedi_8254_cascade_ns_to_timer(struct comedi_8254 *i8254,
>  				     unsigned int *nanosec, unsigned int flags);
> -void comedi_8254_ns_to_timer(struct comedi_8254 *i8254,
> -			     unsigned int *nanosec, unsigned int flags);
>  
>  void comedi_8254_set_busy(struct comedi_8254 *i8254,
>  			  unsigned int counter, bool busy);
> -- 
> 2.47.0
> 
-- 
 -----Open up your eyes, open up your mind, open up your code -------   
/ Dr. David Alan Gilbert    |       Running GNU/Linux       | Happy  \ 
\        dave @ treblig.org |                               | In Hex /
 \ _________________________|_____ http://www.treblig.org   |_______/