From a2bd6c17665f95b7a9ef2d1107d2c0bfa6abf3a1 Mon Sep 17 00:00:00 2001 From: Sagi Maimon Date: Wed, 16 Sep 2026 18:32:39 +0300 Subject: [PATCH] ptp: ocp: unregister devlink before detach on probe error devlink_register() runs before the dpll setup in ptp_ocp_probe(), but the failure paths after it went straight to ptp_ocp_detach() and then devlink_free(), which opens with ASSERT_DEVLINK_NOT_REGISTERED(devlink). Any dpll failure during probe therefore freed a devlink instance that was still registered. Route those paths through a new out_devlink label that unregisters first, matching the order ptp_ocp_remove() already uses. Cc: stable+noautosel@kernel.org # untested fix to unlikely driver error path Signed-off-by: Sagi Maimon Link: https://patch.msgid.link/20260916153242.157171-2-sagi.maimon@adtran.com Signed-off-by: Jakub Kicinski --- drivers/ptp/ptp_ocp.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/ptp/ptp_ocp.c b/drivers/ptp/ptp_ocp.c index 3d26ec1f7b9e..401b04f12d2b 100644 --- a/drivers/ptp/ptp_ocp.c +++ b/drivers/ptp/ptp_ocp.c @@ -5119,12 +5119,12 @@ ptp_ocp_probe(struct pci_dev *pdev, const struct pci_device_id *id) if (IS_ERR(bp->dpll)) { err = PTR_ERR(bp->dpll); dev_err(&pdev->dev, "dpll_device_alloc failed\n"); - goto out; + goto out_devlink; } err = dpll_device_register(bp->dpll, DPLL_TYPE_PPS, &dpll_ops, bp); if (err) - goto out; + goto out_devlink; for (i = 0; i < OCP_SMA_NUM; i++) { bp->sma[i].dpll_pin = dpll_pin_get(clkid, i, THIS_MODULE, @@ -5151,6 +5151,8 @@ out_dpll: dpll_pin_put(bp->sma[i].dpll_pin, &bp->sma[i].tracker); } dpll_device_put(bp->dpll, &bp->tracker); +out_devlink: + devlink_unregister(devlink); out: ptp_ocp_detach(bp); out_disable: