net: fec: do not register PPS event for PEROUT

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[ Upstream commit 9a060d0fac ]

There are currently two situations that can trigger the PTP interrupt,
one is the PPS event, the other is the PEROUT event. However, the irq
handler fec_pps_interrupt() does not check the irq event type and
directly registers a PPS event into the system, but the event may be
a PEROUT event. This is incorrect because PEROUT is an output signal,
while PPS is the input of the kernel PPS system. Therefore, add a check
for the event type, if pps_enable is true, it means that the current
event is a PPS event, and then the PPS event is registered.

Fixes: 350749b909 ("net: fec: Add support for periodic output signal of PPS")
Signed-off-by: Wei Fang <wei.fang@nxp.com>
Link: https://patch.msgid.link/20251125085210.1094306-5-wei.fang@nxp.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Wei Fang 2025-11-25 16:52:10 +08:00 • committed by Greg Kroah-Hartman

parent ca2964a7cb

commit 4c6c2cf740

1 changed files with 5 additions and 2 deletions

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drivers/net/ethernet/freescale/fec_ptp.c

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