1 files changed, 16 insertions, 0 deletions

diff --git a/arch/sparc/kernel/leon_kernel.c b/arch/sparc/kernel/leon_kernel.c
index c23d61e9e52c..d17255a2bbac 100644
--- a/arch/sparc/kernel/leon_kernel.c
+++ b/arch/sparc/kernel/leon_kernel.c
@@ -376,6 +376,22 @@ void __init leon_init_timers(irq_handler_t counter_fn)
                 prom_halt();
         }
 
+#ifdef CONFIG_SMP
+        {
+                unsigned long flags;
+
+                /*
+                 * In SMP, sun4m adds a IPI handler to IRQ trap handler that
+                 * LEON never must take, sun4d and LEON overwrites the branch
+                 * with a NOP.
+                 */
+                local_irq_save(flags);
+                patchme_maybe_smp_msg[0] = 0x01000000; /* NOP out the branch */
+                local_flush_cache_all();
+                local_irq_restore(flags);
+        }
+#endif
+
         LEON3_BYPASS_STORE_PA(&leon3_gptimer_regs->e[leon3_gptimer_idx].ctrl,
                               LEON3_GPTIMER_EN |
                               LEON3_GPTIMER_RL |