tape: beyond ARRAY_SIZE of viocd_diskinfo

Do not go beyond ARRAY_SIZE of tape_device and viotape_unitinfo

Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Acked-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

diff --git a/drivers/char/viotape.c b/drivers/char/viotape.c
index ffc9254..042c814 100644 (file)
--- a/drivers/char/viotape.c
+++ b/drivers/char/viotape.c
@@ -867,7 +867,7 @@ static int viotape_probe(struct vio_dev *vdev, const struct vio_device_id *id)
        int j;
        struct device_node *node = vdev->dev.archdata.of_node;
 
-       if (i > VIOTAPE_MAX_TAPE)
+       if (i >= VIOTAPE_MAX_TAPE)
                return -ENODEV;
        if (!node)
                return -ENODEV;