arch/mips/kernel/i8259.c seems not working in big endian.
Here is a patch to fix this.
--- linux-sgi-cvs/arch/mips/kernel/i8259.c Mon Sep 10 02:43:01 2001
+++ linux.new/arch/mips/kernel/i8259.c Thu Nov 8 15:40:03 2001
@@ -70,8 +70,13 @@
static unsigned int cached_irq_mask = 0xffff;
#define __byte(x,y) (((unsigned char *)&(y))[x])
+#ifdef __BIG_ENDIAN
+#define cached_21 (__byte(1,cached_irq_mask))
+#define cached_A1 (__byte(0,cached_irq_mask))
+#else
#define cached_21 (__byte(0,cached_irq_mask))
#define cached_A1 (__byte(1,cached_irq_mask))
+#endif
void disable_8259A_irq(unsigned int irq)
{
---
Atsushi Nemoto
