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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: Marc Zyngier <maz@kernel.org>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
This commit is contained in:
Marc Zyngier 2021-03-30 16:11:42 +01:00 committed by Lorenzo Pieralisi
parent 94e89b1453
commit 9ec37efb87
1 changed files with 1 additions and 0 deletions
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1
drivers/pci/controller/pci-host-common.c
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@ -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);
}