[PATCH stable-4.14] PCI: qcom: Fix unbalanced PHY init on probe errors

[PATCH stable-4.14] PCI: qcom: Fix unbalanced PHY init on probe errors

[Johan Hovold]

commit 83013631f0f9961416abd812e228c8efbc2f6069 upstream.

Undo the PHY initialisation (e.g. balance runtime PM) if host
initialisation fails during probe.

Link: https://lore.kernel.org/r/20220401133854.10421-3-johan+linaro@kernel.org
Fixes: 82a823833f4e ("PCI: qcom: Add Qualcomm PCIe controller driver")
Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Acked-by: Stanimir Varbanov <svarbanov@mm-sol.com>
Cc: stable@vger.kernel.org      # 4.5
[ johan: adjust context to 4.14 ]
Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
---
 drivers/pci/dwc/pcie-qcom.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/drivers/pci/dwc/pcie-qcom.c b/drivers/pci/dwc/pcie-qcom.c
index 374b2b3afb59..19a78fcf609c 100644
--- a/drivers/pci/dwc/pcie-qcom.c
+++ b/drivers/pci/dwc/pcie-qcom.c
@@ -1302,10 +1302,15 @@ static int qcom_pcie_probe(struct platform_device *pdev)
 	ret = dw_pcie_host_init(pp);
 	if (ret) {
 		dev_err(dev, "cannot initialize host\n");
-		return ret;
+		goto err_phy_exit;
 	}
 
 	return 0;
+
+err_phy_exit:
+	phy_exit(pcie->phy);
+
+	return ret;
 }
 
 static const struct of_device_id qcom_pcie_match[] = {
-- 
2.35.1