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Commit 39a8cbd9 authored by Richard Cochran's avatar Richard Cochran Committed by David S. Miller
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ptp: remember the adjusted frequency 



This patch adds a field to the representation of a PTP hardware clock in
order to remember the frequency adjustment value dialed by the user.

Adding this field will let us answer queries in the manner of adjtimex
in a follow on patch.

Signed-off-by: default avatarRichard Cochran <richardcochran@gmail.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 717ecc27

drivers/ptp/ptp_clock.c

+1 −0
Original line number Diff line number Diff line
@@ -147,6 +147,7 @@ static int ptp_clock_adjtime(struct posix_clock *pc, struct timex *tx) 
	} else if (tx->modes & ADJ_FREQUENCY) {



		err = ops->adjfreq(ops, scaled_ppm_to_ppb(tx->freq));

		ptp->dialed_frequency = tx->freq;

	}



	return err;

drivers/ptp/ptp_private.h

+1 −0
Original line number Diff line number Diff line
@@ -45,6 +45,7 @@ struct ptp_clock { 
	dev_t devid;

	int index; /* index into clocks.map */

	struct pps_device *pps_source;

	long dialed_frequency; /* remembers the frequency adjustment */

	struct timestamp_event_queue tsevq; /* simple fifo for time stamps */

	struct mutex tsevq_mux; /* one process at a time reading the fifo */

	wait_queue_head_t tsev_wq;