From 2d42801bd62eb2018da914272fd505a6d32004a8 Mon Sep 17 00:00:00 2001 From: Eliad Peller Date: Wed, 17 Jun 2015 15:32:37 +0300 Subject: [PATCH] Revert "iwlwifi: mvm: move deferred d0i3 exit to resume_complete op" This reverts commit 088070a2f6575402d3dd82e1c5a4a8e1941805f6. When working in d0i3_on_idle mode, we explicitly go out of d0i3 on resume (so other potential commands could be sent). However, D0I3_DEFER_WAKEUP is currently cleared on resume complete (which happens only later on), causing d0i3 exit to timeout. Since mac80211 was modified to accept incoming frames once drv_resume was called, we can safely revert this patch, and handle the pending work on iwl_mvm_resume(). Signed-off-by: Eliad Peller Signed-off-by: Emmanuel Grumbach --- drivers/net/wireless/iwlwifi/mvm/d3.c | 58 +++++++++++++++------ drivers/net/wireless/iwlwifi/mvm/mac80211.c | 13 ----- 2 files changed, 43 insertions(+), 28 deletions(-) diff --git a/drivers/net/wireless/iwlwifi/mvm/d3.c b/drivers/net/wireless/iwlwifi/mvm/d3.c index 4165d104e4c3..246e60aa2905 100644 --- a/drivers/net/wireless/iwlwifi/mvm/d3.c +++ b/drivers/net/wireless/iwlwifi/mvm/d3.c @@ -1935,28 +1935,56 @@ out: return 1; } -int iwl_mvm_resume(struct ieee80211_hw *hw) +static int iwl_mvm_resume_d3(struct iwl_mvm *mvm) { - struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); + iwl_trans_resume(mvm->trans); + + return __iwl_mvm_resume(mvm, false); +} + +static int iwl_mvm_resume_d0i3(struct iwl_mvm *mvm) +{ + bool exit_now; + + /* + * make sure to clear D0I3_DEFER_WAKEUP before + * calling iwl_trans_resume(), which might wait + * for d0i3 exit completion. + */ + mutex_lock(&mvm->d0i3_suspend_mutex); + __clear_bit(D0I3_DEFER_WAKEUP, &mvm->d0i3_suspend_flags); + exit_now = __test_and_clear_bit(D0I3_PENDING_WAKEUP, + &mvm->d0i3_suspend_flags); + mutex_unlock(&mvm->d0i3_suspend_mutex); + if (exit_now) { + IWL_DEBUG_RPM(mvm, "Run deferred d0i3 exit\n"); + _iwl_mvm_exit_d0i3(mvm); + } iwl_trans_resume(mvm->trans); - if (mvm->hw->wiphy->wowlan_config->any) { - /* 'any' trigger means d0i3 usage */ - if (mvm->trans->d0i3_mode == IWL_D0I3_MODE_ON_SUSPEND) { - int ret = iwl_mvm_exit_d0i3(hw->priv); + if (mvm->trans->d0i3_mode == IWL_D0I3_MODE_ON_SUSPEND) { + int ret = iwl_mvm_exit_d0i3(mvm->hw->priv); - if (ret) - return ret; - /* - * d0i3 exit will be deferred until reconfig_complete. - * make sure there we are out of d0i3. - */ - } - return 0; + if (ret) + return ret; + /* + * d0i3 exit will be deferred until reconfig_complete. + * make sure there we are out of d0i3. + */ } + return 0; +} - return __iwl_mvm_resume(mvm, false); +int iwl_mvm_resume(struct ieee80211_hw *hw) +{ + struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); + + /* 'any' trigger means d0i3 was used */ + if (hw->wiphy->wowlan_config->any) + return iwl_mvm_resume_d0i3(mvm); + else + return iwl_mvm_resume_d3(mvm); } void iwl_mvm_set_wakeup(struct ieee80211_hw *hw, bool enabled) diff --git a/drivers/net/wireless/iwlwifi/mvm/mac80211.c b/drivers/net/wireless/iwlwifi/mvm/mac80211.c index dfdab38e2d4a..45e9913529b2 100644 --- a/drivers/net/wireless/iwlwifi/mvm/mac80211.c +++ b/drivers/net/wireless/iwlwifi/mvm/mac80211.c @@ -1433,22 +1433,9 @@ static void iwl_mvm_restart_complete(struct iwl_mvm *mvm) static void iwl_mvm_resume_complete(struct iwl_mvm *mvm) { - bool exit_now; - if (!iwl_mvm_is_d0i3_supported(mvm)) return; - mutex_lock(&mvm->d0i3_suspend_mutex); - __clear_bit(D0I3_DEFER_WAKEUP, &mvm->d0i3_suspend_flags); - exit_now = __test_and_clear_bit(D0I3_PENDING_WAKEUP, - &mvm->d0i3_suspend_flags); - mutex_unlock(&mvm->d0i3_suspend_mutex); - - if (exit_now) { - IWL_DEBUG_RPM(mvm, "Run deferred d0i3 exit\n"); - _iwl_mvm_exit_d0i3(mvm); - } - if (mvm->trans->d0i3_mode == IWL_D0I3_MODE_ON_SUSPEND) if (!wait_event_timeout(mvm->d0i3_exit_waitq, !test_bit(IWL_MVM_STATUS_IN_D0I3, -- 2.20.1