PCI: Unexport pci_bus_sem
pci_bus_sem is not used by a loadable kernel module and does not need to be
exported.
It was exported by ce29ca3ea407 ("PCI: acpiphp: remove all functions in
slot, even without ACPI _EJx"), which added a use of pci_bus_sem in
acpiphp, which could be built as a module at that time. But since
6037a803b05e ("PCI: acpiphp: Convert acpiphp to be builtin only, not
modular"), it can no longer be built as a module.
Link: https://lore.kernel.org/r/20190718032951.40188-1-skunberg.kelsey@gmail.com
Signed-off-by: Kelsey Skunberg <skunberg.kelsey@gmail.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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