net: fec: only stop PTP if it was initialized

[ Upstream commit dd890ae29299636fb037276fc1b5238698d08b03 ]

fec_ptp_init() is only called when fep->bufdesc_ex is available.
However, fec_probe() unconditionally calls fec_ptp_stop() on the
failed_init path, and fec_drv_remove() unconditionally calls
fec_ptp_stop() during device removal.

Check fep->bufdesc_ex before calling fec_ptp_stop() in both paths
to avoid stopping PTP when it was not initialized.

Fixes: 32cba57ba74b ("net: fec: introduce fec_ptp_stop and use in probe fail path")
Reviewed-by: Wei Fang <wei.fang@nxp.com>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Signed-off-by: bui duc phuc <phucduc.bui@gmail.com>
Link: https://patch.msgid.link/20260826103428.32807-1-phucduc.bui@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/net/ethernet/freescale/fec_main.c b/drivers/net/ethernet/freescale/fec_main.c
index 7699a970cb25e160d4b45f5900510ef1b68b5e18..b37ab4f826bd29453a81b145f88e1c1b105ecd9a 100644 (file)
--- a/drivers/net/ethernet/freescale/fec_main.c
+++ b/drivers/net/ethernet/freescale/fec_main.c
@@ -4642,7 +4642,8 @@ failed_mii_init:
 failed_irq:
        fec_enet_deinit(ndev);
 failed_init:
-       fec_ptp_stop(pdev);
+       if (fep->bufdesc_ex)
+               fec_ptp_stop(pdev);
 failed_reset:
        pm_runtime_put_noidle(&pdev->dev);
        pm_runtime_disable(&pdev->dev);
@@ -4684,7 +4685,8 @@ fec_drv_remove(struct platform_device *pdev)
                        ERR_PTR(ret));
 
        cancel_work_sync(&fep->tx_timeout_work);
-       fec_ptp_stop(pdev);
+       if (fep->bufdesc_ex)
+               fec_ptp_stop(pdev);
        unregister_netdev(ndev);
        fec_enet_mii_remove(fep);
        if (fep->reg_phy)