diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/phy/dp83640.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/net/phy/dp83640.c b/drivers/net/phy/dp83640.c index 3bba2bea3a88..8f241b57fcf6 100644 --- a/drivers/net/phy/dp83640.c +++ b/drivers/net/phy/dp83640.c @@ -475,6 +475,13 @@ static int ptp_dp83640_enable(struct ptp_clock_info *ptp, PTP_FALLING_EDGE | PTP_STRICT_FLAGS)) return -EOPNOTSUPP; + + /* Reject requests to enable time stamping on both edges. */ + if ((rq->extts.flags & PTP_STRICT_FLAGS) && + (rq->extts.flags & PTP_ENABLE_FEATURE) && + (rq->extts.flags & PTP_EXTTS_EDGES) == PTP_EXTTS_EDGES) + return -EOPNOTSUPP; + index = rq->extts.index; if (index >= N_EXT_TS) return -EINVAL; |