From a1e85ec6fb5869438d1b2d602c1a5989e17d982b Mon Sep 17 00:00:00 2001
From: Warner Losh <imp@FreeBSD.org>
Date: Fri, 7 Jun 2002 15:28:16 +0000
Subject: [PATCH] 0 is not an invalid interrupt in the PCI world (just in the
 ia32 world), do not treat it as such.  This fixes the alpha boot problem.

Reviewed by: drew, des
---
 sys/dev/pci/pcivar.h | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/sys/dev/pci/pcivar.h b/sys/dev/pci/pcivar.h
index bd0decfbdaf9..e77a02663c72 100644
--- a/sys/dev/pci/pcivar.h
+++ b/sys/dev/pci/pcivar.h
@@ -246,10 +246,12 @@ PCIB_ACCESSOR(bus,		BUS,		u_int32_t)
 #undef PCIB_ACCESSOR
 
 /*
- * PCI interrupt validation.
+ * PCI interrupt validation.  Invalid interrupt values such as 0 or 128
+ * on i386 or other platforms should be mapped out in the MD pcireadconf
+ * code and not here, since the only MI invalid IRQ is 255.
  */
 #define PCI_INVALID_IRQ		255
-#define PCI_INTERRUPT_VALID(x)	(((x) != 0) && ((x) != PCI_INVALID_IRQ))
+#define PCI_INTERRUPT_VALID(x)	((x) != PCI_INVALID_IRQ)
 
 /*
  * Convenience functions.