linux-kernel - Re: [PATCH 2/2] PTP: add support for one-shot output

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Message-ID: <20190817160342.GB1540@localhost>
Date:   Sat, 17 Aug 2019 09:03:42 -0700
From:   Richard Cochran <richardcochran@...il.com>
To:     Felipe Balbi <felipe.balbi@...ux.intel.com>
Cc:     Christopher S Hall <christopher.s.hall@...el.com>,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/2] PTP: add support for one-shot output

On Wed, Aug 14, 2019 at 10:47:12AM +0300, Felipe Balbi wrote:
> diff --git a/include/uapi/linux/ptp_clock.h b/include/uapi/linux/ptp_clock.h
> index 039cd62ec706..9412b16cc8ed 100644
> --- a/include/uapi/linux/ptp_clock.h
> +++ b/include/uapi/linux/ptp_clock.h
> @@ -67,7 +67,9 @@ struct ptp_perout_request {
>  	struct ptp_clock_time start;  /* Absolute start time. */
>  	struct ptp_clock_time period; /* Desired period, zero means disable. */
>  	unsigned int index;           /* Which channel to configure. */
> -	unsigned int flags;           /* Reserved for future use. */
> +
> +#define PTP_PEROUT_ONE_SHOT BIT(0)
> +	unsigned int flags;           /* Bit 0 -> oneshot output. */

The .flags field doesn't need this comment.  The individual BIT macro
names should be clear enough, and if not, then comment the macros.

>  	unsigned int rsv[4];          /* Reserved for future use. */
>  };
>  
> -- 
> 2.22.0
> 

Reviewed-by: Richard Cochran <richardcochran@...il.com>