1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/usb/input/map_to_7segment.h b/drivers/usb/input/map_to_7segment.h
index 52ff27f15127..a424094d9fe2 100644
--- a/drivers/usb/input/map_to_7segment.h
+++ b/drivers/usb/input/map_to_7segment.h
@@ -79,7 +79,7 @@ struct seg7_conversion_map {
 
 static inline int map_to_seg7(struct seg7_conversion_map *map, int c)
 {
-        return c & 0x7f ? map->table[c] : -EINVAL;
+        return c >= 0 && c < sizeof(map->table) ? map->table[c] : -EINVAL;
 }
 
 #define SEG7_CONVERSION_MAP(_name, _map)        \