PCI: Protect pci_reassign_bridge_resources() against concurrent addition/removal

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pci_reassign_bridge_resources() can be called by pci_resize_resource() at
runtime, it walks the PCI tree up and down, and it isn't currently
protected against any changes or hotplug operation.

Hold the pci_bus_sem to protect it.

Link: https://lore.kernel.org/r/7339fd73ccaf58552737ab10008333fd9f7723f2.camel@kernel.crashing.org
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>

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Benjamin Herrenschmidt 2019-09-25 11:16:55 +10:00 • committed by Bjorn Helgaas

parent 54ecb8f702

commit fb794a708a

1 changed files with 7 additions and 1 deletions

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8

drivers/pci/setup-bus.c

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