3.2-stable review patch. If anyone has any objections, please let me know.
------------------ From: Emmanuel Grumbach <emmanuel.grumb...@intel.com> commit b48d96652626b315229b1b82c6270eead6a77a6d 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. Reported-by: Paul Bolle <pebo...@tiscali.nl> Signed-off-by: Emmanuel Grumbach <emmanuel.grumb...@intel.com> Signed-off-by: Stanislaw Gruszka <sgrus...@redhat.com> Signed-off-by: John W. Linville <linvi...@tuxdriver.com> [bwh: Backported to 3.2: adjust filename, context and variable name] Signed-off-by: Ben Hutchings <b...@decadent.org.uk> --- drivers/net/wireless/iwlegacy/4965-mac.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) --- a/drivers/net/wireless/iwlegacy/iwl-4965-sta.c +++ b/drivers/net/wireless/iwlegacy/iwl-4965-sta.c @@ -466,7 +466,7 @@ int iwl4965_remove_dynamic_key(struct iw return 0; } - if (priv->stations[sta_id].sta.key.key_offset == WEP_INVALID_OFFSET) { + if (priv->stations[sta_id].sta.key.key_flags & STA_KEY_FLG_INVALID) { IWL_WARN(priv, "Removing wrong key %d 0x%x\n", keyconf->keyidx, key_flags); spin_unlock_irqrestore(&priv->sta_lock, flags); @@ -483,7 +483,7 @@ int iwl4965_remove_dynamic_key(struct iw sizeof(struct iwl4965_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; -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/