[PATCH 1/4] x86: add NO_IRQ macro

[Alessandro Rubini]

This is needed to compile AMBA drivers. Most architectures define
NO_IRQ as -1, and this does the same for the PC.

Signed-off-by: Alessandro Rubini <rubini at gnudd.com>
Acked-by: Giancarlo Asnaghi <giancarlo.asnaghi at st.com>
Cc: Russell King <linux at arm.linux.org.uk>
Cc: Alan Cox <alan at linux.intel.com>
---
 arch/x86/include/asm/irq.h |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/arch/x86/include/asm/irq.h b/arch/x86/include/asm/irq.h
index ba870bb..c9072f5 100644
--- a/arch/x86/include/asm/irq.h
+++ b/arch/x86/include/asm/irq.h
@@ -10,6 +10,8 @@
 #include <asm/apicdef.h>
 #include <asm/irq_vectors.h>
 
+#define NO_IRQ	(-1)
+
 static inline int irq_canonicalize(int irq)
 {
 	return ((irq == 2) ? 9 : irq);
-- 
1.7.7.2