PCI: qcom: Fix unbalanced PHY init on probe errors

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
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/pci/host/pcie-qcom.c b/drivers/pci/host/pcie-qcom.c
index 35936409b2d45921a049db1d4ddcbc64c4bb8f04..f5f9828f96bf0f2ddd1911d023060575fc91a2a9 100644 (file)
--- a/drivers/pci/host/pcie-qcom.c
+++ b/drivers/pci/host/pcie-qcom.c
@@ -562,10 +562,15 @@ 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[] = {