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[v2,14/40] PCI: Also call .add_bus() callback for root bus

Message ID 20200821035420.380495-15-robh@kernel.org (mailing list archive)
State New, archived
Headers show
Series PCI: dwc: Driver clean-ups | expand

Commit Message

Rob Herring Aug. 21, 2020, 3:53 a.m. UTC
Similar to pcibios_add_bus(), call pci_ops.add_bus() when the root bus
is added. This allows host bridge drivers to do any setup requiring a
bus pointer.

There are currently no .add_bus() callbacks, so this is safe to do.

Cc: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Rob Herring <robh@kernel.org>
 drivers/pci/probe.c | 6 ++++++
 1 file changed, 6 insertions(+)
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diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
index 0c9ebc72532e..d8bf3fe8dacd 100644
--- a/drivers/pci/probe.c
+++ b/drivers/pci/probe.c
@@ -941,6 +941,12 @@  static int pci_register_host_bridge(struct pci_host_bridge *bridge)
+	if (bus->ops->add_bus) {
+		err = bus->ops->add_bus(bus);
+		if (WARN_ON(err < 0))
+			dev_err(&bus->dev, "failed to add bus: %d\n", err);
+	}
 	/* Create legacy_io and legacy_mem files for this bus */