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authorRichard Cochran <richardcochran@gmail.com>2015-06-11 14:51:30 +0200
committerDavid S. Miller <davem@davemloft.net>2015-06-11 16:04:02 -0700
commit58c98be137830d34b79024cc5dc95ef54fcd7ffe (patch)
treeb66c06d6b9e183b1cfda3f9d5c86e25bcd4aa298
parent8b13b4e0bc884ba7dc8ee4de3ee915b7d30e7f78 (diff)
net: igb: fix the start time for periodic output signals
When programming the start of a periodic output, the code wrongly places the seconds value into the "low" register and the nanoseconds into the "high" register. Even though this is backwards, it slipped through my testing, because the re-arming code in the interrupt service routine is correct, and the signal does appear starting with the second edge. This patch fixes the issue by programming the registers correctly. Signed-off-by: Richard Cochran <richardcochran@gmail.com> Reviewed-by: Jacob Keller <jacob.e.keller@intel.com> Acked-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--drivers/net/ethernet/intel/igb/igb_ptp.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/net/ethernet/intel/igb/igb_ptp.c b/drivers/net/ethernet/intel/igb/igb_ptp.c
index e3b9b63ad010..c3a9392cbc19 100644
--- a/drivers/net/ethernet/intel/igb/igb_ptp.c
+++ b/drivers/net/ethernet/intel/igb/igb_ptp.c
@@ -538,8 +538,8 @@ static int igb_ptp_feature_enable_i210(struct ptp_clock_info *ptp,
igb->perout[i].start.tv_nsec = rq->perout.start.nsec;
igb->perout[i].period.tv_sec = ts.tv_sec;
igb->perout[i].period.tv_nsec = ts.tv_nsec;
- wr32(trgttiml, rq->perout.start.sec);
- wr32(trgttimh, rq->perout.start.nsec);
+ wr32(trgttimh, rq->perout.start.sec);
+ wr32(trgttiml, rq->perout.start.nsec);
tsauxc |= tsauxc_mask;
tsim |= tsim_mask;
} else {