--- linux-2.6.16+/include/linux/signal.h	2006-03-20 07:53:29 +0200
+++ linux-2.6.16/include/linux/signal.h	2006-09-29 13:01:22 +0300
@@ -14,10 +14,13 @@
  *
  * SA_INTERRUPT is also used by the irq handling routines.
  * SA_SHIRQ is for shared interrupt support on PCI and EISA.
- */
+ * SA_PROBEIRQ is set by callers when they expect sharing mismatches to occur
+ */
 #define SA_PROBE		SA_ONESHOT
 #define SA_SAMPLE_RANDOM	SA_RESTART
 #define SA_SHIRQ		0x04000000
+#define SA_PROBEIRQ		0x08000000
+
 /*
  * As above, these correspond to the IORESOURCE_IRQ_* defines in
  * linux/ioport.h to select the interrupt line behaviour.  When