iwlwifi: introduce statistics lock
The statistics are currently only half-heartedly
locked against concurrent reading & modification
so introduce a lock to really protect them.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/iwlwifi/iwl-agn-lib.c b/drivers/net/wireless/iwlwifi/iwl-agn-lib.c
index 5be0d36..0f8dd0f 100644
--- a/drivers/net/wireless/iwlwifi/iwl-agn-lib.c
+++ b/drivers/net/wireless/iwlwifi/iwl-agn-lib.c
@@ -88,6 +88,8 @@
void iwlagn_temperature(struct iwl_priv *priv)
{
+ lockdep_assert_held(&priv->statistics.lock);
+
/* store temperature from correct statistics (in Celsius) */
priv->temperature = le32_to_cpu(priv->statistics.common.temperature);
iwl_tt_handler(priv);