On Wed, Oct 15, 2014 at 11:07:04AM +0800, Yijing Wang wrote: > +static inline struct msi_chip *pci_msi_chip(struct pci_bus *bus) > +{ > + struct pci_controller *control = (struct pci_controller *)bus->sysdata; bus->sysdata is void * so this cast is unnecessary. Ralf