[PATCH v3 1/2] PCI: qcom: Fix host-init error handling

[Johan Hovold <johan+linaro@kernel.org>]

Implement the new host_deinit() callback so that the PHY is powered off
and regulators and clocks are disabled also on late host-init errors.

Fixes: 82a823833f4e ("PCI: qcom: Add Qualcomm PCIe controller driver")
Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
---
 drivers/pci/controller/dwc/pcie-qcom.c | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/drivers/pci/controller/dwc/pcie-qcom.c b/drivers/pci/controller/dwc/pcie-qcom.c
index 0c13f976626f..417be4d225ed 100644
--- a/drivers/pci/controller/dwc/pcie-qcom.c
+++ b/drivers/pci/controller/dwc/pcie-qcom.c
@@ -1534,8 +1534,19 @@ static int qcom_pcie_host_init(struct dw_pcie_rp *pp)
 	return ret;
 }
 
+static void qcom_pcie_host_deinit(struct dw_pcie_rp *pp)
+{
+	struct dw_pcie *pci = to_dw_pcie_from_pp(pp);
+	struct qcom_pcie *pcie = to_qcom_pcie(pci);
+
+	qcom_ep_reset_assert(pcie);
+	phy_power_off(pcie->phy);
+	pcie->cfg->ops->deinit(pcie);
+}
+
 static const struct dw_pcie_host_ops qcom_pcie_dw_ops = {
-	.host_init = qcom_pcie_host_init,
+	.host_init	= qcom_pcie_host_init,
+	.host_deinit	= qcom_pcie_host_deinit,
 };
 
 /* Qcom IP rev.: 2.1.0	Synopsys IP rev.: 4.01a */
-- 
2.37.3