This is a note to let you know that I've just added the patch titled
iwlwifi: dvm: don't send zeroed LQ cmd
to the 3.8-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
iwlwifi-dvm-don-t-send-zeroed-lq-cmd.patch
and it can be found in the queue-3.8 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 63b77bf489881747c5118476918cc8c29378ee63 Mon Sep 17 00:00:00 2001
From: Emmanuel Grumbach <emmanuel.grumbach@xxxxxxxxx>
Date: Wed, 17 Apr 2013 09:47:00 +0300
Subject: iwlwifi: dvm: don't send zeroed LQ cmd
From: Emmanuel Grumbach <emmanuel.grumbach@xxxxxxxxx>
commit 63b77bf489881747c5118476918cc8c29378ee63 upstream.
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.
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@xxxxxxxxx>
Reviewed-by: Johannes Berg <johannes.berg@xxxxxxxxx>
[move zero_lq and make static const]
Signed-off-by: Johannes Berg <johannes.berg@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/net/wireless/iwlwifi/dvm/sta.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
--- a/drivers/net/wireless/iwlwifi/dvm/sta.c
+++ b/drivers/net/wireless/iwlwifi/dvm/sta.c
@@ -707,6 +707,7 @@ void iwl_clear_ucode_stations(struct iwl
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;
@@ -745,7 +746,9 @@ void iwl_restore_stations(struct iwl_pri
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);
Patches currently in stable-queue which might be from emmanuel.grumbach@xxxxxxxxx are
queue-3.8/iwlwifi-dvm-don-t-send-zeroed-lq-cmd.patch
queue-3.8/iwlwifi-fix-freeing-uninitialized-pointer.patch
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