From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Message-Id: <20130518021643.224390004@goodmis.org> Date: Fri, 17 May 2013 22:16:06 -0400 From: Steven Rostedt To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Emmanuel Grumbach , Johannes Berg Subject: [ 009/136 ] iwlwifi: dvm: dont send zeroed LQ cmd References: <20130518021557.139113314@goodmis.org> Content-Disposition: inline; filename=0009-iwlwifi-dvm-don-t-send-zeroed-LQ-cmd.patch Sender: linux-kernel-owner@vger.kernel.org List-ID: 3.6.11.4 stable review patch. If anyone has any objections, please let me know. ------------------ From: Emmanuel Grumbach [ Upstream commit 63b77bf489881747c5118476918cc8c29378ee63 ] When the stations are being restored because of unassoc RXON, the LQ cmd may not have been initialized because it is initialized only after association. Sending zeroed LQ_CMD makes the fw unhappy: it raises SYSASSERT_2078. Cc: stable@vger.kernel.org Signed-off-by: Emmanuel Grumbach Reviewed-by: Johannes Berg Signed-off-by: Steven Rostedt [move zero_lq and make static const] Signed-off-by: Johannes Berg --- drivers/net/wireless/iwlwifi/dvm/sta.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/net/wireless/iwlwifi/dvm/sta.c b/drivers/net/wireless/iwlwifi/dvm/sta.c index b29b798..efe8a4f 100644 --- a/drivers/net/wireless/iwlwifi/dvm/sta.c +++ b/drivers/net/wireless/iwlwifi/dvm/sta.c @@ -706,6 +706,7 @@ void iwl_clear_ucode_stations(struct iwl_priv *priv, void iwl_restore_stations(struct iwl_priv *priv, struct iwl_rxon_context *ctx) { struct iwl_addsta_cmd sta_cmd; + static const struct iwl_link_quality_cmd zero_lq = {}; struct iwl_link_quality_cmd lq; int i; bool found = false; @@ -744,7 +745,9 @@ void iwl_restore_stations(struct iwl_priv *priv, struct iwl_rxon_context *ctx) else memcpy(&lq, priv->stations[i].lq, sizeof(struct iwl_link_quality_cmd)); - send_lq = true; + + if (!memcmp(&lq, &zero_lq, sizeof(lq))) + send_lq = true; } spin_unlock_bh(&priv->sta_lock); ret = iwl_send_add_sta(priv, &sta_cmd, CMD_SYNC); -- 1.7.10.4