1 files changed, 1 insertions, 1 deletions

diff --git a/arch/sh/boards/mach-r2d/irq.c b/arch/sh/boards/mach-r2d/irq.c
index c70fecedcac4..78d7b27c80da 100644
--- a/arch/sh/boards/mach-r2d/irq.c
+++ b/arch/sh/boards/mach-r2d/irq.c
@@ -116,7 +116,7 @@ static unsigned char irl2irq[R2D_NR_IRL];
 
 int rts7751r2d_irq_demux(int irq)
 {
-        if (irq >= R2D_NR_IRL || !irl2irq[irq])
+        if (irq >= R2D_NR_IRL || irq < 0 || !irl2irq[irq])
                 return irq;
 
         return irl2irq[irq];