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

Rob Herring
2020-08-21T03:55:29Z

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(+)

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)

pcibios_add_bus(bus);

+ 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 */
pci_create_legacy_files(bus);

--
2.25.1