From: Avri Altman Date: Tue, 11 Nov 2014 05:29:59 +0000 (+0200) Subject: iwlwifi: mvm: Fix the keep_alive calculation X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=5387b348b7af299c2aa8e0318498fa7d889da4fd;p=linux-beck.git iwlwifi: mvm: Fix the keep_alive calculation The driver must set the keep alive period regardless of power management state. The keep alive period must be greater or equal to both the NIC's maximum sleep period, and the listen interval. However, we were confusing time units (TU) and msec, so fix that. Signed-off-by: Avri Altman Reviewed-by: Johannes Berg Signed-off-by: Emmanuel Grumbach --- diff --git a/drivers/net/wireless/iwlwifi/mvm/power.c b/drivers/net/wireless/iwlwifi/mvm/power.c index cb653ac10412..2620dd0c45f9 100644 --- a/drivers/net/wireless/iwlwifi/mvm/power.c +++ b/drivers/net/wireless/iwlwifi/mvm/power.c @@ -329,7 +329,7 @@ static void iwl_mvm_power_build_cmd(struct iwl_mvm *mvm, struct ieee80211_vif *vif, struct iwl_mac_power_cmd *cmd) { - int dtimper, dtimper_msec, bi; + int dtimper, bi; int keep_alive; bool radar_detect = false; struct iwl_mvm_vif *mvmvif __maybe_unused = @@ -346,10 +346,9 @@ static void iwl_mvm_power_build_cmd(struct iwl_mvm *mvm, * immediately after association. Check that keep alive period * is at least 3 * DTIM */ - dtimper_msec = dtimper * bi; - keep_alive = max_t(int, 3 * dtimper_msec, - MSEC_PER_SEC * POWER_KEEP_ALIVE_PERIOD_SEC); - keep_alive = DIV_ROUND_UP(keep_alive, MSEC_PER_SEC); + keep_alive = DIV_ROUND_UP(ieee80211_tu_to_usec(3 * dtimper * bi), + USEC_PER_SEC); + keep_alive = max(keep_alive, POWER_KEEP_ALIVE_PERIOD_SEC); cmd->keep_alive_seconds = cpu_to_le16(keep_alive); if (mvm->ps_disabled)