Commit d2c64f98 authored by Andy Shevchenko's avatar Andy Shevchenko Committed by Bjorn Helgaas
Browse files

PCI: Use pci_find_vsec_capability() when looking for TBT devices 

Currently set_pcie_thunderbolt() open-codes pci_find_vsec_capability().
Refactor the former to use the latter. No functional change intended.

Link: https://lore.kernel.org/r/20211115112902.24033-1-andriy.shevchenko@linux.intel.com


Signed-off-by: default avatarAndy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: default avatarBjorn Helgaas <bhelgaas@google.com>
Reviewed-by: default avatarKrzysztof Wilczyński <kw@linux.com>
parent fa55b7dc

drivers/pci/probe.c

+5 −13
Original line number Diff line number Diff line
@@ -1579,20 +1579,12 @@ void set_pcie_hotplug_bridge(struct pci_dev *pdev) 


static void set_pcie_thunderbolt(struct pci_dev *dev)

{

	int vsec = 0;

	u32 header;



	while ((vsec = pci_find_next_ext_capability(dev, vsec,

						    PCI_EXT_CAP_ID_VNDR))) {

		pci_read_config_dword(dev, vsec + PCI_VNDR_HEADER, &header);

	u16 vsec;



	/* Is the device part of a Thunderbolt controller? */

		if (dev->vendor == PCI_VENDOR_ID_INTEL &&

		    PCI_VNDR_HEADER_ID(header) == PCI_VSEC_ID_INTEL_TBT) {

	vsec = pci_find_vsec_capability(dev, PCI_VENDOR_ID_INTEL, PCI_VSEC_ID_INTEL_TBT);

	if (vsec)

		dev->is_thunderbolt = 1;

			return;

		}

	}

}



static void set_pcie_untrusted(struct pci_dev *dev)