-function will return 0 and the device will have been switched into
-MSI-X interrupt mode. The 'vector' elements in each entry will have
-been filled in with the interrupt number. The driver should then call
-request_irq() for each 'vector' that it decides to use.
+device is switched into MSI-X mode and the function returns 0.
+The 'vector' member in each entry is populated with the interrupt number;
+the driver should then call request_irq() for each 'vector' that it
+decides to use. The device driver is responsible for keeping track of the
+interrupts assigned to the MSI-X vectors so it can free them again later.