Commit c019b4be authored by Richard Cochran's avatar Richard Cochran Committed by David S. Miller

mv88e6xxx: Reject requests to enable time stamping on both edges.

This driver enables rising edge or falling edge, but not both, and so
this patch validates that the request contains only one of the two
edges.
Signed-off-by: default avatarRichard Cochran <richardcochran@gmail.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 6138e687
...@@ -280,6 +280,12 @@ static int mv88e6352_ptp_enable_extts(struct mv88e6xxx_chip *chip, ...@@ -280,6 +280,12 @@ static int mv88e6352_ptp_enable_extts(struct mv88e6xxx_chip *chip,
PTP_STRICT_FLAGS)) PTP_STRICT_FLAGS))
return -EOPNOTSUPP; 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;
pin = ptp_find_pin(chip->ptp_clock, PTP_PF_EXTTS, rq->extts.index); pin = ptp_find_pin(chip->ptp_clock, PTP_PF_EXTTS, rq->extts.index);
if (pin < 0) if (pin < 0)
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment