3.0-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Emmanuel Grumbach <[email protected]>

commit d6ee27eb13beab94056e0de52d81220058ca2297 upstream.

When we remove a key, we put a key index which was supposed
to tell the fw that we are actually removing the key. But
instead the fw took that index as a valid index and messed
up the SRAM of the device.

This memory corruption on the device mangled the data of
the SCD. The impact on the user is that SCD queue 2 got
stuck after having removed keys.
The message is the log that was printed is:

Queue 2 stuck for 10000ms

This doesn't seem to fix the higher queues that get stuck
from time to time.

Reviewed-by: Meenakshi Venkataraman <[email protected]>
Signed-off-by: Emmanuel Grumbach <[email protected]>
Signed-off-by: Johannes Berg <[email protected]>
Signed-off-by: John W. Linville <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>

---
 drivers/net/wireless/iwlwifi/iwl-agn-sta.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/net/wireless/iwlwifi/iwl-agn-sta.c
+++ b/drivers/net/wireless/iwlwifi/iwl-agn-sta.c
@@ -477,7 +477,7 @@ int iwl_remove_dynamic_key(struct iwl_pr
                                        sizeof(struct iwl_keyinfo));
        priv->stations[sta_id].sta.key.key_flags =
                        STA_KEY_FLG_NO_ENC | STA_KEY_FLG_INVALID;
-       priv->stations[sta_id].sta.key.key_offset = WEP_INVALID_OFFSET;
+       priv->stations[sta_id].sta.key.key_offset = keyconf->hw_key_idx;
        priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
        priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
 


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