Files
linux-bredos/include/linux
Mika Westerberg 5396956cc7 PCI: Make pcie_find_root_port() work for Root Ports
Commit 6ae72bfa65 ("PCI: Unify pcie_find_root_port() and
pci_find_pcie_root_port()") broke acpi_pci_bridge_d3() because calling
pcie_find_root_port() on a Root Port returned NULL when it should return
the Root Port, which in turn broke power management of PCIe hierarchies.

Rework pcie_find_root_port() so it returns its argument when it is already
a Root Port.

[bhelgaas: test device only once, test for PCIe]
Fixes: 6ae72bfa65 ("PCI: Unify pcie_find_root_port() and pci_find_pcie_root_port()")
Link: https://lore.kernel.org/r/20200622161248.51099-1-mika.westerberg@linux.intel.com
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2020-06-30 16:58:27 -05:00
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