staging: mt7621-pci: delete release gpios related code

Making gpio8 and gpio9 vendor specific and putting them
into the specific dts file makes not needed to release
gpios anymore because we are not occupying those pins
in the first place if it is not necessary. When the
device tree is parsed we can also check and return for
the error because we rely in the fact that the related
device for the board is correct.
Signed-off-by: Sergio Paracuellos <sergio.paracuellos@gmail.com>
Link: https://lore.kernel.org/r/20200321072650.7784-3-sergio.paracuellos@gmail.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/mt7621-pci/pci-mt7621.c

@@ -364,8 +364,8 @@ static int mt7621_pcie_parse_port(struct mt7621_pcie *pcie,
 	port->gpio_rst = devm_gpiod_get_index_optional(dev, "reset", slot,
 						       GPIOD_OUT_LOW);
 	if (IS_ERR(port->gpio_rst)) {
-		dev_notice(dev, "Failed to get GPIO for PCIe%d\n", slot);
-		port->gpio_rst = NULL;
+		dev_err(dev, "Failed to get GPIO for PCIe%d\n", slot);
+		return PTR_ERR(port->gpio_rst);
 	}
 
 	port->slot = slot;
@@ -474,15 +474,6 @@ static void mt7621_pcie_reset_ep_deassert(struct mt7621_pcie *pcie)
 	mdelay(PERST_DELAY_MS);
 }
 
-static void mt7621_pcie_release_gpios(struct mt7621_pcie *pcie)
-{
-	struct mt7621_pcie_port *port;
-
-	list_for_each_entry(port, &pcie->ports, list)
-		if (port->gpio_rst)
-			gpiod_put(port->gpio_rst);
-}
-
 static void mt7621_pcie_init_ports(struct mt7621_pcie *pcie)
 {
 	struct device *dev = pcie->dev;
@@ -684,7 +675,7 @@ static int mt7621_pci_probe(struct platform_device *pdev)
 	err = mt7621_pci_parse_request_of_pci_ranges(pcie);
 	if (err) {
 		dev_err(dev, "Error requesting pci resources from ranges");
-		goto out_release_gpios;
+		return err;
 	}
 
 	/* set resources limits */
@@ -698,8 +689,7 @@ static int mt7621_pci_probe(struct platform_device *pdev)
 	err = mt7621_pcie_init_virtual_bridges(pcie);
 	if (err) {
 		dev_err(dev, "Nothing is connected in virtual bridges. Exiting...");
-		err = 0;
-		goto out_release_gpios;
+		return 0;
 	}
 
 	mt7621_pcie_enable_ports(pcie);
@@ -709,19 +699,16 @@ static int mt7621_pci_probe(struct platform_device *pdev)
 	err = mt7621_pcie_request_resources(pcie, &res);
 	if (err) {
 		dev_err(dev, "Error requesting resources\n");
-		goto out_release_gpios;
+		return err;
 	}
 
 	err = mt7621_pcie_register_host(bridge, &res);
 	if (err) {
 		dev_err(dev, "Error registering host\n");
-		goto out_release_gpios;
+		return err;
 	}
 
-out_release_gpios:
-	mt7621_pcie_release_gpios(pcie);
-
-	return err;
+	return 0;
 }
 
 static const struct of_device_id mt7621_pci_ids[] = {