PCI: mobiveil: Add Header Type field check (11d22cc3) · Commits · 戴 / test

Check the Header Type and exit from the host driver initialization if it is not in host mode. Signed-off-by:

drivers/pci/controller/mobiveil/pcie-mobiveil-host.c

+13 −0

Original line number	Diff line number	Diff line
		@@ -554,6 +554,16 @@ static int mobiveil_pcie_interrupt_init(struct mobiveil_pcie *pcie)
		return mobiveil_pcie_integrated_interrupt_init(pcie);
		}

		static bool mobiveil_pcie_is_bridge(struct mobiveil_pcie *pcie)
		{
		u32 header_type;

		header_type = mobiveil_csr_readb(pcie, PCI_HEADER_TYPE);
		header_type &= 0x7f;

		return header_type == PCI_HEADER_TYPE_BRIDGE;
		}

		int mobiveil_pcie_host_probe(struct mobiveil_pcie *pcie)
		{
		struct mobiveil_root_port *rp = &pcie->rp;
		@@ -569,6 +579,9 @@ int mobiveil_pcie_host_probe(struct mobiveil_pcie *pcie)
		return ret;
		}

		if (!mobiveil_pcie_is_bridge(pcie))
		return -ENODEV;

		/* parse the host bridge base addresses from the device tree file */
		ret = pci_parse_request_of_pci_ranges(dev, &bridge->windows,
		&bridge->dma_ranges, NULL);