Re: [patch V2 16/25] virtio_rtc: Use provided clock ID for history snapshot

[Peter Hilber]

On Fri, May 29, 2026 at 10:00:52PM +0200, Thomas Gleixner wrote:
> From: Thomas Gleixner <tglx@xxxxxxxxxx>
> 
> The PTP core indicates in system_device_crosststamp::clock_id the clock ID
> for which the system time stamp should be taken. That allows to utilize
> hardware timestamps with e.g. AUX clocks.
> 
> Use ktime_get_snapshot_id() and hand the provided clock ID in.
> 
> No functional change.
> 
> Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxx>
> Tested-by: Arthur Kiyanovski <akiyano@xxxxxxxxxx>
> Reviewed-by: David Woodhouse <dwmw@xxxxxxxxxxxx>
> Reviewed-by: Jacob Keller <jacob.e.keller@xxxxxxxxx>

Acked-by: Peter Hilber <peter.hilber@xxxxxxxxxxxxxxxx>

> ---
>  drivers/virtio/virtio_rtc_ptp.c |    2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> --- a/drivers/virtio/virtio_rtc_ptp.c
> +++ b/drivers/virtio/virtio_rtc_ptp.c
> @@ -139,7 +139,7 @@ static int viortc_ptp_getcrosststamp(str
>  	if (ret)
>  		return ret;
>  
> -	ktime_get_snapshot(&history_begin);
> +	ktime_get_snapshot_id(xtstamp->clock_id, &history_begin);
>  	if (history_begin.cs_id != cs_id)
>  		return -EOPNOTSUPP;
>  
>