PCI: Add pcie_get_width_cap() to find max supported link width
Add pcie_get_width_cap() to find the max link width supported by a device.
Change max_link_width_show() to use pcie_get_width_cap().
Signed-off-by: Tal Gilboa <[email protected]>
[bhelgaas: return width directly instead of error and *width, don't export
outside drivers/pci]
Signed-off-by: Bjorn Helgaas <[email protected]>
Reviewed-by: Tariq Toukan <[email protected]>
diff --git a/drivers/pci/pci.h b/drivers/pci/pci.h
index 1186d8b..66738f10 100644
--- a/drivers/pci/pci.h
+++ b/drivers/pci/pci.h
@@ -262,6 +262,7 @@ void pci_disable_bridge_window(struct pci_dev *dev);
"Unknown speed")
enum pci_bus_speed pcie_get_speed_cap(struct pci_dev *dev);
+enum pcie_link_width pcie_get_width_cap(struct pci_dev *dev);
/* Single Root I/O Virtualization */
struct pci_sriov {
