From 1dd9124e2911b34744672c91ad865f39711f5542 Mon Sep 17 00:00:00 2001 From: Emmanuel Grumbach Date: Thu, 15 Sep 2011 11:46:40 -0700 Subject: [PATCH] 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 Signed-off-by: Wey-Yi Guy Signed-off-by: John W. Linville --- drivers/net/wireless/iwlwifi/iwl-core.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/drivers/net/wireless/iwlwifi/iwl-core.c b/drivers/net/wireless/iwlwifi/iwl-core.c index 0a426cbcbfc4..ce8a015c7205 100644 --- a/drivers/net/wireless/iwlwifi/iwl-core.c +++ b/drivers/net/wireless/iwlwifi/iwl-core.c @@ -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); -- 2.20.1