parisc: Fix read buffer overflow in pdc_stable driver

Check whether index is within bounds before testing the element.

Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Signed-off-by: Helge Deller <deller@gmx.de>

diff --git a/drivers/parisc/pdc_stable.c b/drivers/parisc/pdc_stable.c
index f9f9a5f..13a64bc 100644 (file)
--- a/drivers/parisc/pdc_stable.c
+++ b/drivers/parisc/pdc_stable.c
@@ -370,7 +370,7 @@ pdcspath_layer_read(struct pdcspath_entry *entry, char *buf)
        if (!i) /* entry is not ready */
                return -ENODATA;
        
-       for (i = 0; devpath->layers[i] && (likely(i < 6)); i++)
+       for (i = 0; i < 6 && devpath->layers[i]; i++)
                out += sprintf(out, "%u ", devpath->layers[i]);
 
        out += sprintf(out, "\n");