PCI: qcom: Use default config space read function

Move the device class fudge to a proper fixup function, and remove
qcom_pcie_rd_own_conf() which has become useless.

dw_pcie_setup_rc() already did the right thing, but it's broken
on older qcom chips, such as 8064.
Signed-off-by: Marc Gonzalez <marc.w.gonzalez@free.fr>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Stanimir Varbanov <svarbanov@mm-sol.com>

drivers/pci/controller/dwc/pcie-qcom.c

@@ -1129,25 +1129,8 @@ static int qcom_pcie_host_init(struct pcie_port *pp)
 	return ret;
 }
 
-static int qcom_pcie_rd_own_conf(struct pcie_port *pp, int where, int size,
-				 u32 *val)
-{
-	struct dw_pcie *pci = to_dw_pcie_from_pp(pp);
-
-	/* the device class is not reported correctly from the register */
-	if (where == PCI_CLASS_REVISION && size == 4) {
-		*val = readl(pci->dbi_base + PCI_CLASS_REVISION);
-		*val &= 0xff;	/* keep revision id */
-		*val |= PCI_CLASS_BRIDGE_PCI << 16;
-		return PCIBIOS_SUCCESSFUL;
-	}
-
-	return dw_pcie_read(pci->dbi_base + where, size, val);
-}
-
 static const struct dw_pcie_host_ops qcom_pcie_dw_ops = {
 	.host_init = qcom_pcie_host_init,
-	.rd_own_conf = qcom_pcie_rd_own_conf,
 };
 
 /* Qcom IP rev.: 2.1.0	Synopsys IP rev.: 4.01a */
@@ -1309,6 +1292,12 @@ static const struct of_device_id qcom_pcie_match[] = {
 	{ }
 };
 
+static void qcom_fixup_class(struct pci_dev *dev)
+{
+	dev->class = PCI_CLASS_BRIDGE_PCI << 8;
+}
+DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_QCOM, PCI_ANY_ID, qcom_fixup_class);
+
 static struct platform_driver qcom_pcie_driver = {
 	.probe = qcom_pcie_probe,
 	.driver = {