Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6

Conflicts:

	net/mac80211/rc80211_pid_algo.c

1 files changed, 12 insertions, 8 deletions

diff --git a/drivers/net/wireless/p54common.c b/drivers/net/wireless/p54common.c
index 84cc000e71aa..63f9badf3f52 100644
--- a/drivers/net/wireless/p54common.c
+++ b/drivers/net/wireless/p54common.c
@@ -206,18 +206,23 @@ int p54_parse_eeprom(struct ieee80211_hw *dev, void *eeprom, int len)
         struct p54_common *priv = dev->priv;
         struct eeprom_pda_wrap *wrap = NULL;
         struct pda_entry *entry;
-        int i = 0;
         unsigned int data_len, entry_len;
         void *tmp;
         int err;
+        u8 *end = (u8 *)eeprom + len;
 
         wrap = (struct eeprom_pda_wrap *) eeprom;
-        entry = (void *)wrap->data + wrap->len;
-        i += 2;
-        i += le16_to_cpu(entry->len)*2;
-        while (i < len) {
+        entry = (void *)wrap->data + le16_to_cpu(wrap->len);
+
+        /* verify that at least the entry length/code fits */
+        while ((u8 *)entry <= end - sizeof(*entry)) {
                 entry_len = le16_to_cpu(entry->len);
                 data_len = ((entry_len - 1) << 1);
+
+                /* abort if entry exceeds whole structure */
+                if ((u8 *)entry + sizeof(*entry) + data_len > end)
+                        break;
+
                 switch (le16_to_cpu(entry->code)) {
                 case PDR_MAC_ADDRESS:
                         SET_IEEE80211_PERM_ADDR(dev, entry->data);
@@ -289,7 +294,8 @@ int p54_parse_eeprom(struct ieee80211_hw *dev, void *eeprom, int len)
                         priv->version = *(u8 *)(entry->data + 1);
                         break;
                 case PDR_END:
-                        i = len;
+                        /* make it overrun */
+                        entry_len = len;
                         break;
                 default:
                         printk(KERN_INFO "p54: unknown eeprom code : 0x%x\n",
@@ -298,8 +304,6 @@ int p54_parse_eeprom(struct ieee80211_hw *dev, void *eeprom, int len)
                 }
 
                 entry = (void *)entry + (entry_len + 1)*2;
-                i += 2;
-                i += entry_len*2;
         }
 
         if (!priv->iq_autocal || !priv->output_limit || !priv->curve_data) {