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iwlagn: check ready in iwlagn_bss_info_changed() 

In function iwlagn_bss_info_changed(), we need to check if the driver
is ready before doing real work. Also, the previously put WARN() is
removed because the vif is not guaranteed to be valid. uCode restart
routine will clear the vif.

Signed-off-by: Shanyu Zhao <shanyu.zhao@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
This commit is contained in:
Shanyu Zhao 2010-12-02 11:02:28 -08:00 committed by Wey-Yi Guy
parent a1da077bc3
commit ae0b693c12
1 changed files with 8 additions and 1 deletions
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9
drivers/net/wireless/iwlwifi/iwl-agn-rxon.c
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@ -518,7 +518,14 @@ void iwlagn_bss_info_changed(struct ieee80211_hw *hw,
mutex_lock(&priv->mutex);
if (WARN_ON(!ctx->vif)) {
if (unlikely(!iwl_is_ready(priv))) {
IWL_DEBUG_MAC80211(priv, "leave - not ready\n");
mutex_unlock(&priv->mutex);
return;
}
if (unlikely(!ctx->vif)) {
IWL_DEBUG_MAC80211(priv, "leave - vif is NULL\n");
mutex_unlock(&priv->mutex);
return;
}