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| author |   Jacob Keller <jacob.e.keller@intel.com> | 2025-03-12 15:15:52 -0700 |
|---|---|---|
| committer |   Paolo Abeni <pabeni@redhat.com> | 2025-03-20 08:50:03 +0100 |
| commit | c0b4ddd30871c59043ed3592e6abeee55c3bf045 (patch) | |
| tree | 7921d986d1ac59b24d9e1059f738b7e92141265d | |
| parent | renesas: reject PTP_STRICT_FLAGS as unsupported (diff) | |
| download | wireguard-linux-c0b4ddd30871c59043ed3592e6abeee55c3bf045.tar.xz wireguard-linux-c0b4ddd30871c59043ed3592e6abeee55c3bf045.zip | |
net: lan743x: reject unsupported external timestamp requests
The lan743x_ptp_io_event_cap_en() function checks that the given request
sets only one of PTP_RISING_EDGE or PTP_FALLING_EDGE, but not both.
However, this driver does not check whether other flags (such as
PTP_EXT_OFF) are set, nor whether any future unrecognized flags are set.
Fix this by adding the appropriate check to the lan743x_ptp_io_extts()
function.
Fixes: 60942c397af6 ("net: lan743x: Add support for PTP-IO Event Input External Timestamp (extts)")
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20250312-jk-net-fixes-supported-extts-flags-v2-3-ea930ba82459@intel.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
| -rw-r--r-- | drivers/net/ethernet/microchip/lan743x_ptp.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/net/ethernet/microchip/lan743x_ptp.c b/drivers/net/ethernet/microchip/lan743x_ptp.c index 4a777b449ecd..0be44dcb3393 100644 --- a/drivers/net/ethernet/microchip/lan743x_ptp.c +++ b/drivers/net/ethernet/microchip/lan743x_ptp.c @@ -942,6 +942,12 @@ static int lan743x_ptp_io_extts(struct lan743x_adapter *adapter, int on, extts = &ptp->extts[index]; + if (extts_request->flags & ~(PTP_ENABLE_FEATURE | + PTP_RISING_EDGE | + PTP_FALLING_EDGE | + PTP_STRICT_FLAGS)) + return -EOPNOTSUPP; + if (on) { extts_pin = ptp_find_pin(ptp->ptp_clock, PTP_PF_EXTTS, index); if (extts_pin < 0) |