From: Bjorn Helgaas <bhelgaas@google.com>
Date: Wed, 21 Oct 2020 14:58:41 +0000 (-0500)
Subject: Merge branch 'remotes/lorenzo/pci/kirin'
X-Git-Tag: v5.10-rc1~58^2~10
X-Git-Url: https://repo.jachan.dev/linux.git/commitdiff_plain/29828fc20ab1c5d2f41e2749921c4bd32da6c38e?hp=7ba381c449fdfaae9768e092e1e8a87ac1459561

Merge branch 'remotes/lorenzo/pci/kirin'

- Return -EPROBE_DEFER in case the gpio isn't ready (Bean Huo)

* remotes/lorenzo/pci/kirin:
  PCI: kirin: Return -EPROBE_DEFER in case the gpio isn't ready
---

diff --git a/drivers/pci/controller/dwc/pcie-kirin.c b/drivers/pci/controller/dwc/pcie-kirin.c
index 6f01ae013326..d0a6a2dee6f5 100644
--- a/drivers/pci/controller/dwc/pcie-kirin.c
+++ b/drivers/pci/controller/dwc/pcie-kirin.c
@@ -508,8 +508,12 @@ static int kirin_pcie_probe(struct platform_device *pdev)
 
 	kirin_pcie->gpio_id_reset = of_get_named_gpio(dev->of_node,
 						      "reset-gpios", 0);
-	if (kirin_pcie->gpio_id_reset < 0)
+	if (kirin_pcie->gpio_id_reset == -EPROBE_DEFER) {
+		return -EPROBE_DEFER;
+	} else if (!gpio_is_valid(kirin_pcie->gpio_id_reset)) {
+		dev_err(dev, "unable to get a valid gpio pin\n");
 		return -ENODEV;
+	}
 
 	ret = kirin_pcie_power_on(kirin_pcie);
 	if (ret)