How to request multiply MSI interrupts?

Hi,

#dmesg
 pci 0000:04:00.0: irq 47-48 for MSI/MSI-X
# cat /proc/interrupts
            CPU0
   0:      49252   IO-APIC-edge      timer
   1:          2   IO-APIC-edge      i8042
    ........
   5:          0   IO-APIC-edge      parport0
   8:          1   IO-APIC-edge      rtc0
  46:       9454   PCI-MSI-edge      eth1
  47:          0   PCI-MSI-edge      LATTICE_pci

Question 1
May I need to request twice as you sa
  if (request_irq (47,(irq_handler_t) irqreturn_CAN_isr, 
                   IRQF_DISABLED, LATTICE_PCI_NAME, &LATTICE_pci_dev))
  if (request_irq (48,(irq_handler_t)irqreturn_UART_isr, 
                   IRQF_DISABLED, LATTICE_PCI_NAME, &LATTICE_pci_dev))
--------------------Interrupt Handlers---------------------------------
 static irqreturn_CAN_isr ( 47, void *dev ) {
      void testCAN();
   
      printk(KERN_DEBUG " CAN received irq = %d \n", irq); 
   
      return IRQ_HANDLED;
   
  }
  
 static irqreturn_UART_isr ( int irq, void *dev ) {
      void testUART();
   
      printk(KERN_DEBUG " UART received irq = %d \n", irq); 
   
      return IRQ_HANDLED;
   
  }