1 files changed, 6 insertions, 1 deletions

diff --git a/arch/alpha/kernel/irq.c b/arch/alpha/kernel/irq.c
index 9006063e7369..da677f829f76 100644
--- a/arch/alpha/kernel/irq.c
+++ b/arch/alpha/kernel/irq.c
@@ -151,8 +151,13 @@ handle_irq(int irq, struct pt_regs * regs)
         }
 
         irq_enter();
+        /*
+         * __do_IRQ() must be called with IPL_MAX. Note that we do not
+         * explicitly enable interrupts afterwards - some MILO PALcode
+         * (namely LX164 one) seems to have severe problems with RTI
+         * at IPL 0.
+         */
         local_irq_disable();
         __do_IRQ(irq, regs);
-        local_irq_enable();
         irq_exit();
 }