orinoco: Fix walking past the end of the buffer

Fix walking past the end of the bitrate_table array
in the case when the loop counter == BITRATE_TABLE_SIZE.

Reported by: Denis Kirjanov <dkirjanov@kernel.org>
Signed-off-by: David Kilroy <kilroyd@googlemail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 9 insertions, 2 deletions

diff --git a/drivers/net/wireless/orinoco/wext.c b/drivers/net/wireless/orinoco/wext.c
index cf7be1eb612..93505f93bf9 100644
--- a/drivers/net/wireless/orinoco/wext.c
+++ b/drivers/net/wireless/orinoco/wext.c
@@ -589,8 +589,15 @@ static int orinoco_ioctl_getrate(struct net_device *dev,
 
         /* If the interface is running we try to find more about the
            current mode */
-        if (netif_running(dev))
-                err = orinoco_hw_get_act_bitrate(priv, &bitrate);
+        if (netif_running(dev)) {
+                int act_bitrate;
+                int lerr;
+
+                /* Ignore errors if we can't get the actual bitrate */
+                lerr = orinoco_hw_get_act_bitrate(priv, &act_bitrate);
+                if (!lerr)
+                        bitrate = act_bitrate;
+        }
 
         orinoco_unlock(priv, &flags);