This is a note to let you know that I've just added the patch titled
iwlegacy: fix IBSS mode crashes
to the 2.6.38-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:
iwlegacy-fix-ibss-mode-crashes.patch
and it can be found in the queue-2.6.38 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <[email protected]> know about it.
>From eb85de3f84868ca85703a23617b4079ce79a801e Mon Sep 17 00:00:00 2001
From: Stanislaw Gruszka <[email protected]>
Date: Sat, 7 May 2011 17:46:21 +0200
Subject: iwlegacy: fix IBSS mode crashes
From: Stanislaw Gruszka <[email protected]>
commit eb85de3f84868ca85703a23617b4079ce79a801e upstream.
We should not switch to non-IBSS channels when working in IBSS mode,
otherwise there are microcode errors, and after some time system
crashes.
This bug is only observable when software scan is used in IBSS mode,
so should be considered as regression after:
commit 0263aa45293838b514b8af674a03faf040991a90
Author: Stanislaw Gruszka <[email protected]>
Date: Tue Mar 29 11:24:21 2011 +0200
iwl3945: disable hw scan by default
However IBSS mode check, which this patch add again, was removed by
commit b2f30e8bdd8ef5f3b5a7ef9146509585a15347d3
Author: Johannes Berg <[email protected]>
Date: Thu Jan 21 07:32:20 2010 -0800
iwlwifi: remove IBSS channel sanity check
That commit claim that mac80211 will not use non-IBSS channel in IBSS
mode, what definitely is not true. Bug probably should be fixed in
mac80211, but that will require more work, so better to apply that patch
temporally, and provide proper mac80211 fix latter.
Resolves:
https://bugzilla.kernel.org/show_bug.cgi?id=34452
Reported-and-tested-by: Mikko Rapeli <[email protected]>
Signed-off-by: Stanislaw Gruszka <[email protected]>
Signed-off-by: John W. Linville <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
drivers/net/wireless/iwlwifi/iwl-legacy.c | 7 +++++++
1 file changed, 7 insertions(+)
--- a/drivers/net/wireless/iwlwifi/iwl-legacy.c
+++ b/drivers/net/wireless/iwlwifi/iwl-legacy.c
@@ -123,6 +123,13 @@ int iwl_legacy_mac_config(struct ieee802
goto set_ch_out;
}
+ if (priv->iw_mode == NL80211_IFTYPE_ADHOC &&
+ !is_channel_ibss(ch_info)) {
+ IWL_DEBUG_MAC80211(priv, "leave - not IBSS channel\n");
+ ret = -EINVAL;
+ goto set_ch_out;
+ }
+
spin_lock_irqsave(&priv->lock, flags);
for_each_context(priv, ctx) {
Patches currently in stable-queue which might be from [email protected] are
queue-2.6.38/iwlwifi-add-ack-plpc-_check-module-parameters.patch
queue-2.6.38/iwlegacy-fix-ibss-mode-crashes.patch
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