pci_enable_msi_range — configure device's MSI capability structure
| int pci_enable_msi_range ( | struct pci_dev * dev, | 
| int minvec, | |
| int maxvec ); | 
devdevice to configure
minvecminimal number of interrupts to configure
maxvecmaximum number of interrupts to configure
   This function tries to allocate a maximum possible number of interrupts in a
   range between minvec and maxvec. It returns a negative errno if an error
   occurs. If it succeeds, it returns the actual number of interrupts allocated
   and updates the dev's irq member to the lowest new interrupt number;
   the other interrupt numbers allocated to this device are consecutive.