From 4130c67cd123a36c902cbe9ce5a2efbc33eb18c0 Mon Sep 17 00:00:00 2001 From: Miri Korenblit Date: Wed, 3 Jul 2024 06:43:15 +0300 Subject: wifi: iwlwifi: mvm: check vif for NULL/ERR_PTR before dereference iwl_mvm_get_bss_vif might return a NULL or ERR_PTR. Some of the callers check only the NULL case, and some doesn't check at all. Some of the callers even have a pointer to the mvmvif of the bss vif, so we don't even need to call this function, and can simply get the vif from mvmvif. Do it for those cases, and for the others - properly check if IS_ERR_OR_NULL Fixes: ec0d43d26f2c ("wifi: iwlwifi: mvm: Activate EMLSR based on traffic volume") Signed-off-by: Miri Korenblit Link: https://patch.msgid.link/20240703064027.a661f8c65aac.I45cf09b01af8ee3d55828863958ead741ea43b7f@changeid Signed-off-by: Johannes Berg --- drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c | 6 ++++-- drivers/net/wireless/intel/iwlwifi/mvm/ops.c | 2 +- drivers/net/wireless/intel/iwlwifi/mvm/rx.c | 2 +- 3 files changed, 6 insertions(+), 4 deletions(-) (limited to 'drivers/net/wireless/intel/iwlwifi') diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c b/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c index d8c72da617ae..dac6155ae1bd 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c @@ -1656,7 +1656,8 @@ static void iwl_mvm_prevent_esr_done_wk(struct wiphy *wiphy, struct iwl_mvm_vif *mvmvif = container_of(wk, struct iwl_mvm_vif, prevent_esr_done_wk.work); struct iwl_mvm *mvm = mvmvif->mvm; - struct ieee80211_vif *vif = iwl_mvm_get_bss_vif(mvm); + struct ieee80211_vif *vif = + container_of((void *)mvmvif, struct ieee80211_vif, drv_priv); mutex_lock(&mvm->mutex); iwl_mvm_unblock_esr(mvm, vif, IWL_MVM_ESR_BLOCKED_PREVENTION); @@ -1682,7 +1683,8 @@ static void iwl_mvm_unblock_esr_tpt(struct wiphy *wiphy, struct wiphy_work *wk) struct iwl_mvm_vif *mvmvif = container_of(wk, struct iwl_mvm_vif, unblock_esr_tpt_wk); struct iwl_mvm *mvm = mvmvif->mvm; - struct ieee80211_vif *vif = iwl_mvm_get_bss_vif(mvm); + struct ieee80211_vif *vif = + container_of((void *)mvmvif, struct ieee80211_vif, drv_priv); mutex_lock(&mvm->mutex); iwl_mvm_unblock_esr(mvm, vif, IWL_MVM_ESR_BLOCKED_TPT); diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/ops.c b/drivers/net/wireless/intel/iwlwifi/mvm/ops.c index ac6f6e40b418..d343432474db 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/ops.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/ops.c @@ -153,7 +153,7 @@ static void iwl_mvm_rx_esr_mode_notif(struct iwl_mvm *mvm, struct ieee80211_vif *vif = iwl_mvm_get_bss_vif(mvm); /* FW recommendations is only for entering EMLSR */ - if (!vif || iwl_mvm_vif_from_mac80211(vif)->esr_active) + if (IS_ERR_OR_NULL(vif) || iwl_mvm_vif_from_mac80211(vif)->esr_active) return; if (le32_to_cpu(notif->action) == ESR_RECOMMEND_ENTER) diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/rx.c b/drivers/net/wireless/intel/iwlwifi/mvm/rx.c index 773cc2bdcb0b..6e933907f985 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/rx.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/rx.c @@ -966,7 +966,7 @@ static void iwl_mvm_update_esr_mode_tpt(struct iwl_mvm *mvm) lockdep_assert_held(&mvm->mutex); - if (!bss_vif) + if (IS_ERR_OR_NULL(bss_vif)) return; mvmvif = iwl_mvm_vif_from_mac80211(bss_vif); -- cgit v1.2.3