diff options
Diffstat (limited to 'drivers/pci/pci.c')
| -rw-r--r-- | drivers/pci/pci.c | 43 |
1 files changed, 0 insertions, 43 deletions
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c index e597655a5643..4bafa817c40a 100644 --- a/drivers/pci/pci.c +++ b/drivers/pci/pci.c @@ -5070,49 +5070,6 @@ int pcie_set_mps(struct pci_dev *dev, int mps) EXPORT_SYMBOL(pcie_set_mps); /** - * pcie_get_minimum_link - determine minimum link settings of a PCI device - * @dev: PCI device to query - * @speed: storage for minimum speed - * @width: storage for minimum width - * - * This function will walk up the PCI device chain and determine the minimum - * link width and speed of the device. - */ -int pcie_get_minimum_link(struct pci_dev *dev, enum pci_bus_speed *speed, - enum pcie_link_width *width) -{ - int ret; - - *speed = PCI_SPEED_UNKNOWN; - *width = PCIE_LNK_WIDTH_UNKNOWN; - - while (dev) { - u16 lnksta; - enum pci_bus_speed next_speed; - enum pcie_link_width next_width; - - ret = pcie_capability_read_word(dev, PCI_EXP_LNKSTA, &lnksta); - if (ret) - return ret; - - next_speed = pcie_link_speed[lnksta & PCI_EXP_LNKSTA_CLS]; - next_width = (lnksta & PCI_EXP_LNKSTA_NLW) >> - PCI_EXP_LNKSTA_NLW_SHIFT; - - if (next_speed < *speed) - *speed = next_speed; - - if (next_width < *width) - *width = next_width; - - dev = dev->bus->self; - } - - return 0; -} -EXPORT_SYMBOL(pcie_get_minimum_link); - -/** * pcie_bandwidth_available - determine minimum link settings of a PCIe * device and its bandwidth limitation * @dev: PCI device to query |