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PCI: Export pcie_get_speed_cap and pcie_get_width_cap

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So drivers can use them.  This can be used to replace
duplicate code in the drm subsystem.

Acked-by: Christian König <christian.koenig@amd.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Alex Deucher 2018-06-25 13:17:41 -05:00
parent 8eaf2b1faa
commit 576c7218a1
2 changed files with 5 additions and 0 deletions
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2
drivers/pci/pci.c
View file

@ -5222,6 +5222,7 @@ enum pci_bus_speed pcie_get_speed_cap(struct pci_dev *dev)
return PCI_SPEED_UNKNOWN; return PCI_SPEED_UNKNOWN;
} }
EXPORT_SYMBOL(pcie_get_speed_cap);
/** /**
* pcie_get_width_cap - query for the PCI device's link width capability * pcie_get_width_cap - query for the PCI device's link width capability
@ -5240,6 +5241,7 @@ enum pcie_link_width pcie_get_width_cap(struct pci_dev *dev)
return PCIE_LNK_WIDTH_UNKNOWN; return PCIE_LNK_WIDTH_UNKNOWN;
} }
EXPORT_SYMBOL(pcie_get_width_cap);
/** /**
* pcie_bandwidth_capable - calculate a PCI device's link bandwidth capability * pcie_bandwidth_capable - calculate a PCI device's link bandwidth capability

3
include/linux/pci.h
View file

@ -261,6 +261,9 @@ enum pci_bus_speed {
PCI_SPEED_UNKNOWN = 0xff, PCI_SPEED_UNKNOWN = 0xff,
}; };
enum pci_bus_speed pcie_get_speed_cap(struct pci_dev *dev);
enum pcie_link_width pcie_get_width_cap(struct pci_dev *dev);
struct pci_cap_saved_data { struct pci_cap_saved_data {
u16 cap_nr; u16 cap_nr;
bool cap_extended; bool cap_extended;