1 files changed, 9 insertions, 1 deletions

diff --git a/arch/microblaze/kernel/intc.c b/arch/microblaze/kernel/intc.c
index 6eea6f92b84e..03172c1da770 100644
--- a/arch/microblaze/kernel/intc.c
+++ b/arch/microblaze/kernel/intc.c
@@ -42,8 +42,16 @@ unsigned int nr_irq;
 
 static void intc_enable_or_unmask(unsigned int irq)
 {
+        unsigned long mask = 1 << irq;
         pr_debug("enable_or_unmask: %d\n", irq);
-        out_be32(INTC_BASE + SIE, 1 << irq);
+        out_be32(INTC_BASE + SIE, mask);
+
+        /* ack level irqs because they can't be acked during
+         * ack function since the handle_level_irq function
+         * acks the irq before calling the interrupt handler
+         */
+        if (irq_desc[irq].status & IRQ_LEVEL)
+                out_be32(INTC_BASE + IAR, mask);
 }
 
 static void intc_disable_or_mask(unsigned int irq)