6.14-stable review patch. If anyone has any objections, please let me know.
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From: Jacob Keller jacob.e.keller@intel.com
[ Upstream commit c0b4ddd30871c59043ed3592e6abeee55c3bf045 ]
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-ea... Signed-off-by: Paolo Abeni pabeni@redhat.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/net/ethernet/microchip/lan743x_ptp.c | 6 ++++++ 1 file changed, 6 insertions(+)
diff --git a/drivers/net/ethernet/microchip/lan743x_ptp.c b/drivers/net/ethernet/microchip/lan743x_ptp.c index 4a777b449ecd0..0be44dcb33938 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)