From d3a571971e5af241074947fc80f6284677f6e014 Mon Sep 17 00:00:00 2001 From: Reinette Chatre Date: Thu, 21 Jan 2010 11:52:28 -0800 Subject: [PATCH] iwlwifi: iwl_power_update_mode always hold mutex iwl_power_update_mode expects to be called with mutex held, for example to protect priv->vif. Only one caller currently does not do this, fix this. Also, add a comment to iwl_power_update_mode to indicate this requirement. Signed-off-by: Reinette Chatre --- drivers/net/wireless/iwlwifi/iwl-debugfs.c | 2 ++ drivers/net/wireless/iwlwifi/iwl-power.c | 2 +- 2 files changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/net/wireless/iwlwifi/iwl-debugfs.c b/drivers/net/wireless/iwlwifi/iwl-debugfs.c index 5c8377b9ad9b..d134301b553c 100644 --- a/drivers/net/wireless/iwlwifi/iwl-debugfs.c +++ b/drivers/net/wireless/iwlwifi/iwl-debugfs.c @@ -815,7 +815,9 @@ static ssize_t iwl_dbgfs_sleep_level_override_write(struct file *file, priv->power_data.debug_sleep_level_override = value; + mutex_lock(&priv->mutex); iwl_power_update_mode(priv, true); + mutex_unlock(&priv->mutex); return count; } diff --git a/drivers/net/wireless/iwlwifi/iwl-power.c b/drivers/net/wireless/iwlwifi/iwl-power.c index 232dd1879baf..1a1a9f081cc7 100644 --- a/drivers/net/wireless/iwlwifi/iwl-power.c +++ b/drivers/net/wireless/iwlwifi/iwl-power.c @@ -303,7 +303,7 @@ static int iwl_set_power(struct iwl_priv *priv, struct iwl_powertable_cmd *cmd) sizeof(struct iwl_powertable_cmd), cmd); } - +/* priv->mutex must be held */ int iwl_power_update_mode(struct iwl_priv *priv, bool force) { int ret = 0;