Fix for sparc64 irq.c compile error

Hello.

Please excuse me for contacting you so bluntly, but after some hours of 
debugging, I feel the need to contribute my little patch, in the hope it 
is somewhat helpful.

The problem: On sparc64, arch/sparc64/kernel/irq.c is missing the 
inclusion of asm/io.h, which causes readb() and writeb() to be undefined. 
Please see the attached patch for the correction.

This should also go into the -stable-series.

Grüße,
Sven Hartge

-- 
Sven Hartge -- professioneller Unix-Geek
Meine Gedanken im Netz: http://sven.formvision.de/blog/

[SPARC64]: Fix compile error in irq.c

irq.c is missing the inclusion of asm/io.h, which causes
readb() and writeb() the be undefined.

Signed-off-by: Sven Hartge <[email protected]>

diff --git a/arch/sparc64/kernel/irq.c b/arch/sparc64/kernel/irq.c
--- a/arch/sparc64/kernel/irq.c
+++ b/arch/sparc64/kernel/irq.c
@@ -27,6 +27,7 @@
 #include <asm/atomic.h>
 #include <asm/system.h>
 #include <asm/irq.h>
+#include <asm/io.h>
 #include <asm/sbus.h>
 #include <asm/iommu.h>
 #include <asm/upa.h>