#define CHIP_IRQ_VME (1<<5) /* interrupt is VME bus and requires VME bridge */
#define CHIP_IRQ_CUSTOM (1<<6) /* custom interrupt provided by board or chip code */
#define CHIP_IRQ_FAST (1<<7) /* interrupt handler only schedules postponed processing */
+#define CHIP_KEEP_DATA (1<<8) /* let the hotplug device free its chip_data structure itself */
#define CHIP_MAX_IRQLOOP 1000