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iwlagn: provide data after WARN_ON 

From time to time, we hit a WARN_ON in iwl_mac_remove_interface.
This basically means that we got out of sync with mac80211: the vif
we hold differs from the vif 80211 passes as parameter. Try to get
some data that will help to debug this.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Emmanuel Grumbach 2011-09-15 11:46:40 -07:00 committed by John W. Linville
parent 403ba56aed
commit 1dd9124e29
1 changed files with 7 additions and 1 deletions
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8
drivers/net/wireless/iwlwifi/iwl-core.c
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@ -1328,7 +1328,13 @@ void iwl_mac_remove_interface(struct ieee80211_hw *hw,
mutex_lock(&priv->shrd->mutex);
WARN_ON(ctx->vif != vif);
if (WARN_ON(ctx->vif != vif)) {
struct iwl_rxon_context *tmp;
IWL_ERR(priv, "ctx->vif = %p, vif = %p\n", ctx->vif, vif);
for_each_context(priv, tmp)
IWL_ERR(priv, "\tID = %d:\tctx = %p\tctx->vif = %p\n",
tmp->ctxid, tmp, tmp->vif);
}
ctx->vif = NULL;
iwl_teardown_interface(priv, vif, false);