shinys000114/linux
1
0
Fork 0
mirror of https://github.com/hardkernel/linux.git synced 2026-06-08 03:40:35 +09:00
Code Issues Packages Projects Releases Wiki Activity

net: fec: do not register PPS event for PEROUT

Browse Source 
[ Upstream commit 9a060d0fac9e75524f72864adec6d8cdb70a5bca ]

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>
This commit is contained in:
Wei Fang
2025-11-25 16:52:10 +08:00
committed by Greg Kroah-Hartman
parent 2648b8b519
commit 21f867e3da
1 changed files with 5 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

7
drivers/net/ethernet/freescale/fec_ptp.c
View File

@@ -719,8 +719,11 @@ static irqreturn_t fec_pps_interrupt(int irq, void *dev_id)
fep->next_counter = (fep->next_counter + fep->reload_period) &
fep->cc.mask;
event.type = PTP_CLOCK_PPS;
ptp_clock_event(fep->ptp_clock, &event);
if (fep->pps_enable) {
event.type = PTP_CLOCK_PPS;
ptp_clock_event(fep->ptp_clock, &event);
}
return IRQ_HANDLED;
}