sh: Make sure indexes are positive
The indexes are signed, make sure they are not negative
when we read array elements.
Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
diff --git a/arch/sh/boards/mach-highlander/setup.c b/arch/sh/boards/mach-highlander/setup.c
index 566e69d..f663c14 100644
--- a/arch/sh/boards/mach-highlander/setup.c
+++ b/arch/sh/boards/mach-highlander/setup.c
@@ -384,7 +384,7 @@
static int highlander_irq_demux(int irq)
{
- if (irq >= HL_NR_IRL || !irl2irq[irq])
+ if (irq >= HL_NR_IRL || irq < 0 || !irl2irq[irq])
return irq;
return irl2irq[irq];