Commit 9ec37efb authored by Marc Zyngier's avatar Marc Zyngier Committed by Lorenzo Pieralisi
Browse files

PCI/MSI: Make pci_host_common_probe() declare its reliance on MSI domains 

The generic PCI host driver relies on MSI domains for MSIs to
be provided to its end-points. Make this dependency explicit.

This cures the warnings occuring on arm/arm64 VMs when booted
with PCI virtio devices and no MSI controller (no GICv3 ITS,
for example).

It is likely that other drivers will need to express the same
dependency.

Link: https://lore.kernel.org/r/20210330151145.997953-12-maz@kernel.org


Signed-off-by: default avatarMarc Zyngier <maz@kernel.org>
Signed-off-by: default avatarLorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Acked-by: default avatarBjorn Helgaas <bhelgaas@google.com>
parent 94e89b14

drivers/pci/controller/pci-host-common.c

+1 −0
Original line number Diff line number Diff line
@@ -79,6 +79,7 @@ int pci_host_common_probe(struct platform_device *pdev) 


	bridge->sysdata = cfg;

	bridge->ops = (struct pci_ops *)&ops->pci_ops;

	bridge->msi_domain = true;



	return pci_host_probe(bridge);

}