Similar to commit 9ec37efb8783 ("PCI/MSI: Make pci_host_common_probe() declare its reliance on MSI domains"), declare this dependency for PCI probe in ACPI based flow. This is required especially for RISC-V platforms where MSI controller can be absent. However, setting this for all architectures seem to cause issues on non RISC-V architectures [1]. Hence, enabled this only for RISC-V. [1] - https://lore.kernel.org/oe-lkp/202403041047.791cb18e-oliver.sang@xxxxxxxxx Signed-off-by: Sunil V L <sunilvl@xxxxxxxxxxxxxxxx> --- drivers/pci/probe.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c index 1325fbae2f28..e09915bee2ee 100644 --- a/drivers/pci/probe.c +++ b/drivers/pci/probe.c @@ -3048,6 +3048,9 @@ struct pci_bus *pci_create_root_bus(struct device *parent, int bus, bridge->sysdata = sysdata; bridge->busnr = bus; bridge->ops = ops; +#ifdef CONFIG_RISCV + bridge->msi_domain = true; +#endif error = pci_register_host_bridge(bridge); if (error < 0) -- 2.40.1