276     fn irq_install(&mut self, msg: IrqMsg) -> Result<u8, PciError> {  in irq_install()
278             if msg.irq_common_message.irq_index as usize > irq_vector.len() {  in irq_install()
280                     msg.irq_common_message.irq_index,  in irq_install()
288                     return self.msix_install(msg);  in irq_install()
291                     return self.msi_install(msg);  in irq_install()
307     fn msi_install(&mut self, msg: IrqMsg) -> Result<u8, PciError> {  in msi_install()
321                         self.irq_vector_mut().unwrap()[msg.irq_common_message.irq_index as usize];  in msi_install()
322                     let common_msg = &msg.irq_common_message;  in msi_install()
346                         let trigger = match msg.irq_specific_message {  in msi_install()
457     fn msix_install(&mut self, msg: IrqMsg) -> Result<u8, PciError> {  in msix_install()
470                         self.irq_vector_mut().unwrap()[msg.irq_common_message.irq_index as usize];  in msix_install()
471                     let common_msg = &msg.irq_common_message;  in msix_install()
494                     let trigger = match msg.irq_specific_message {  in msix_install()
511                         + msg.irq_common_message.irq_index as usize * size_of::<MsixEntry>();  in msix_install()