[PATCH] PCI: qcom: Ignore -ENODEV after Root Port reset

[Konrad Dybcio]

Root Port recovery may race with a device hot-unplug. In that case,
dw_pcie_wait_for_link() returns -ENODEV because no device is detected
after the controller has been successfully reset.

This is a valid outcome and should not cause Root Port recovery to
fail. Ignore -ENODEV while continuing to propagate other link-training
errors.

Assisted-by: LLM
Fixes: 4d88cb82a6d9 ("PCI: qcom: Implement .reset_root_port() and use for link down")
Signed-off-by: Konrad Dybcio <konrad.dybcio@xxxxxxxxxxxxxxxx>
---
 drivers/pci/controller/dwc/pcie-qcom.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/pci/controller/dwc/pcie-qcom.c b/drivers/pci/controller/dwc/pcie-qcom.c
index ee63a6ec99de4d07c16b8d6cb68df0d92f822cd8..3d3be9bf798b7c247d69969d6570385b8648123f 100644
--- a/drivers/pci/controller/dwc/pcie-qcom.c
+++ b/drivers/pci/controller/dwc/pcie-qcom.c
@@ -1880,6 +1880,9 @@ static int qcom_pcie_reset_root_port(struct pci_host_bridge *bridge,
 	qcom_pcie_start_link(pci);
 
 	ret = dw_pcie_wait_for_link(pci);
+	/* This linkdown might have been a hot-unplug */
+	if (ret == -ENODEV)
+		ret = 0;
 	if (ret)
 		return ret;
 

---
base-commit: e6e35979777d646fe3c7c94dca7dd32fb25d45f4
change-id: 20260916-topic-pcie_portrec_enodev-cc576ea927f9

Best regards,
-- 
Konrad Dybcio <konrad.dybcio@xxxxxxxxxxxxxxxx>