diff options
| author | Richard Cochran <richardcochran@gmail.com> | 2019-11-14 10:45:02 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2019-11-15 12:48:32 -0800 |
| commit | 6138e687c7b679da08c0feb55a88f448f7890c07 (patch) | |
| tree | 5fa29b3639962a57b0b0e7e81690311ff2b06710 /drivers/net/dsa/mv88e6xxx | |
| parent | 592025a03b34927f35852058c933ffcd7c500321 (diff) | |
| download | linux-6138e687c7b679da08c0feb55a88f448f7890c07.tar.bz2 | |
ptp: Introduce strict checking of external time stamp options.
User space may request time stamps on rising edges, falling edges, or
both. However, the particular mode may or may not be supported in the
hardware or in the driver. This patch adds a "strict" flag that tells
drivers to ensure that the requested mode will be honored.
Signed-off-by: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/dsa/mv88e6xxx')
| -rw-r--r-- | drivers/net/dsa/mv88e6xxx/ptp.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/net/dsa/mv88e6xxx/ptp.c b/drivers/net/dsa/mv88e6xxx/ptp.c index 076e622a64d6..3b1985902f95 100644 --- a/drivers/net/dsa/mv88e6xxx/ptp.c +++ b/drivers/net/dsa/mv88e6xxx/ptp.c @@ -276,7 +276,8 @@ static int mv88e6352_ptp_enable_extts(struct mv88e6xxx_chip *chip, /* Reject requests with unsupported flags */ if (rq->extts.flags & ~(PTP_ENABLE_FEATURE | PTP_RISING_EDGE | - PTP_FALLING_EDGE)) + PTP_FALLING_EDGE | + PTP_STRICT_FLAGS)) return -EOPNOTSUPP; pin = ptp_find_pin(chip->ptp_clock, PTP_PF_EXTTS, rq->extts.index); |