5.4-stable review patch. If anyone has any objections, please let me know.
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From: Csókás, Bence csokas.bence@prolan.hu
[ Upstream commit 8fee6d5ad5fa18c270eedb2a2cdf58dbadefb94b ]
PPS was not stopped in `fec_ptp_stop()`, called when the adapter was removed. Consequentially, you couldn't safely reload the driver with the PPS signal on.
Fixes: 32cba57ba74b ("net: fec: introduce fec_ptp_stop and use in probe fail path") Reviewed-by: Fabio Estevam festevam@gmail.com Link: https://lore.kernel.org/netdev/CAOMZO5BzcZR8PwKKwBssQq_wAGzVgf1ffwe_nhpQJjvi... Signed-off-by: Csókás, Bence csokas.bence@prolan.hu Reviewed-by: Andrew Lunn andrew@lunn.ch Reviewed-by: Frank Li Frank.Li@nxp.com Link: https://patch.msgid.link/20240807080956.2556602-1-csokas.bence@prolan.hu Signed-off-by: Jakub Kicinski kuba@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/net/ethernet/freescale/fec_ptp.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/drivers/net/ethernet/freescale/fec_ptp.c b/drivers/net/ethernet/freescale/fec_ptp.c index 37b8ad29b5b30..c5af845b1b253 100644 --- a/drivers/net/ethernet/freescale/fec_ptp.c +++ b/drivers/net/ethernet/freescale/fec_ptp.c @@ -635,6 +635,9 @@ void fec_ptp_stop(struct platform_device *pdev) struct net_device *ndev = platform_get_drvdata(pdev); struct fec_enet_private *fep = netdev_priv(ndev);
+ if (fep->pps_enable) + fec_ptp_enable_pps(fep, 0); + cancel_delayed_work_sync(&fep->time_keep); if (fep->ptp_clock) ptp_clock_unregister(fep->ptp_clock);