On Thursday 28 May 2015 19:34:52 Zhou Wang wrote: > > @@ -462,9 +453,6 @@ static void pcibios_init_hw(struct device *parent, struct hw_pci *hw, > > if (!sys) > > panic("PCI: unable to allocate sys data!"); > > > > -#ifdef CONFIG_PCI_MSI > > - sys->msi_ctrl = hw->msi_ctrl; > > -#endif > > sys->busnr = busnr; > > sys->swizzle = hw->swizzle; > > sys->map_irq = hw->map_irq; > > @@ -493,6 +481,9 @@ static void pcibios_init_hw(struct device *parent, struct hw_pci *hw, > > panic("PCI: unable to scan bus!"); > > > > busnr = sys->bus->busn_res.end + 1; > > +#ifdef CONFIG_PCI_MSI > > + bus->msi = hw->msi_ctrl; > > +#endif > > > > list_add(&sys->node, head); > > } else { > > > > Hi Arnd, > > I think it does not work in above way(with adaptation as Fabrice mentioned). > As the msi controller is passed to secondary bus one by one during the process of enumeration. > Here we just set msi controller for root bus. Ah, too bad. I guess you are right, the bus->msi pointer here would really need to be set between pci_create_root_bus() and pci_scan_child_bus(), but we currently don't run any ARM specific code between the two. Arnd -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html