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authorRichard Cochran <richardcochran@gmail.com>2019-11-14 10:45:02 -0800
committerDavid S. Miller <davem@davemloft.net>2019-11-15 12:48:32 -0800
commit6138e687c7b679da08c0feb55a88f448f7890c07 (patch)
tree5fa29b3639962a57b0b0e7e81690311ff2b06710 /drivers/net/ethernet/renesas
parent592025a03b34927f35852058c933ffcd7c500321 (diff)
downloadlinux-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/ethernet/renesas')
-rw-r--r--drivers/net/ethernet/renesas/ravb_ptp.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/net/ethernet/renesas/ravb_ptp.c b/drivers/net/ethernet/renesas/ravb_ptp.c
index 666dbee48097..6984bd5b7da9 100644
--- a/drivers/net/ethernet/renesas/ravb_ptp.c
+++ b/drivers/net/ethernet/renesas/ravb_ptp.c
@@ -185,7 +185,8 @@ static int ravb_ptp_extts(struct ptp_clock_info *ptp,
/* Reject requests with unsupported flags */
if (req->flags & ~(PTP_ENABLE_FEATURE |
PTP_RISING_EDGE |
- PTP_FALLING_EDGE))
+ PTP_FALLING_EDGE |
+ PTP_STRICT_FLAGS))
return -EOPNOTSUPP;
if (req->index)