1 files changed, 5 insertions, 0 deletions

diff --git a/arch/mips/dec/setup.c b/arch/mips/dec/setup.c
index 56e6e2c23683..41bbffd9cc0e 100644
--- a/arch/mips/dec/setup.c
+++ b/arch/mips/dec/setup.c
@@ -23,6 +23,7 @@
 #include <asm/bootinfo.h>
 #include <asm/cpu.h>
 #include <asm/cpu-features.h>
+#include <asm/cpu-type.h>
 #include <asm/irq.h>
 #include <asm/irq_cpu.h>
 #include <asm/mipsregs.h>
@@ -748,6 +749,10 @@ void __init arch_init_irq(void)
                 cpu_fpu_mask = 0;
                 dec_interrupt[DEC_IRQ_FPU] = -1;
         }
+        /* Free the halt interrupt unused on R4k systems.  */
+        if (current_cpu_type() == CPU_R4000SC ||
+            current_cpu_type() == CPU_R4400SC)
+                dec_interrupt[DEC_IRQ_HALT] = -1;
 
         /* Register board interrupts: FPU and cascade. */
         if (dec_interrupt[DEC_IRQ_FPU] >= 0)