diff options
| author | Yicong Yang <yangyicong@hisilicon.com> | 2020-05-09 13:19:28 +0300 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2020-05-15 00:35:09 +0300 |
| commit | 6ae72bfa656ea04806f98ef85cb44b0789064362 (patch) | |
| tree | 3e476c1b2f8c95051f631686d1158042c4a4d4f8 /drivers/pci/pci.c | |
| parent | 914a1951d88968371c7d43400c9d936382cd7d69 (diff) | |
| download | linux-6ae72bfa656ea04806f98ef85cb44b0789064362.tar.xz | |
PCI: Unify pcie_find_root_port() and pci_find_pcie_root_port()
Previously we used pcie_find_root_port() to find a Root Port from a PCIe
device and pci_find_pcie_root_port() to find a Root Port from a
Conventional PCI device.
Unify the two functions and use pcie_find_root_port() to find a Root Port
from either a Conventional PCI device or a PCIe device. Then there is no
need to distinguish the type of the device.
Link: https://lore.kernel.org/r/1589019568-5216-1-git-send-email-yangyicong@hisilicon.com
Signed-off-by: Yicong Yang <yangyicong@hisilicon.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Kalle Valo <kvalo@codeaurora.org> # wireless
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com> # thunderbolt
Diffstat (limited to 'drivers/pci/pci.c')
| -rw-r--r-- | drivers/pci/pci.c | 24 |
1 files changed, 0 insertions, 24 deletions
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c index bb78f580814e..227a3a979ec4 100644 --- a/drivers/pci/pci.c +++ b/drivers/pci/pci.c @@ -752,30 +752,6 @@ struct resource *pci_find_resource(struct pci_dev *dev, struct resource *res) EXPORT_SYMBOL(pci_find_resource); /** - * pci_find_pcie_root_port - return PCIe Root Port - * @dev: PCI device to query - * - * Traverse up the parent chain and return the PCIe Root Port PCI Device - * for a given PCI Device. - */ -struct pci_dev *pci_find_pcie_root_port(struct pci_dev *dev) -{ - struct pci_dev *bridge, *highest_pcie_bridge = dev; - - bridge = pci_upstream_bridge(dev); - while (bridge && pci_is_pcie(bridge)) { - highest_pcie_bridge = bridge; - bridge = pci_upstream_bridge(bridge); - } - - if (pci_pcie_type(highest_pcie_bridge) != PCI_EXP_TYPE_ROOT_PORT) - return NULL; - - return highest_pcie_bridge; -} -EXPORT_SYMBOL(pci_find_pcie_root_port); - -/** * pci_wait_for_pending - wait for @mask bit(s) to clear in status word @pos * @dev: the PCI device to operate on * @pos: config space offset of status word |