From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 98256EB64DC for ; Sun, 9 Jul 2023 11:23:34 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231596AbjGILXd (ORCPT ); Sun, 9 Jul 2023 07:23:33 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35120 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231536AbjGILXd (ORCPT ); Sun, 9 Jul 2023 07:23:33 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 4131F90 for ; Sun, 9 Jul 2023 04:23:32 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id D41C760BD6 for ; Sun, 9 Jul 2023 11:23:31 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id DB2F5C433C9; Sun, 9 Jul 2023 11:23:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1688901811; bh=+AAk+VYTmDNqiLu+1bCTqvw65rgwQS8RivAgkBhJa4M=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=QVWpcKsQOHjW6JX3FsYUkTIqCBbcslnToGwi6KxIqv5BLdzDx0Qz08lLN90Ki/iUb apPVRjwlOTSnpHZMwu2aVikyP6es2DmeyjBt3m+nlbqfzmMXFoNbcqiRB/VfA/WA6m Vr1Bf1PONUuiiSPgY+uSqlMz17T7e30ZjvHCmX10= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Johannes Berg , Gregory Greenman , Sasha Levin Subject: [PATCH 6.3 125/431] wifi: iwlwifi: pull from TXQs with softirqs disabled Date: Sun, 9 Jul 2023 13:11:13 +0200 Message-ID: <20230709111454.086909641@linuxfoundation.org> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20230709111451.101012554@linuxfoundation.org> References: <20230709111451.101012554@linuxfoundation.org> User-Agent: quilt/0.67 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Johannes Berg [ Upstream commit 96fb6f47db24a712d650b0a9b9074873f273fb0e ] In mac80211, it's required that we pull from TXQs by calling ieee80211_tx_dequeue() only with softirqs disabled. However, in iwl_mvm_queue_state_change() we're often called with them enabled, e.g. from flush if anything was flushed, triggering a mac80211 warning. Fix that by disabling the softirqs across the TX call. Fixes: cfbc6c4c5b91 ("iwlwifi: mvm: support mac80211 TXQs model") Signed-off-by: Johannes Berg Signed-off-by: Gregory Greenman Link: https://lore.kernel.org/r/20230614123446.0feef7fa81db.I4dd62542d955b40dd8f0af34fa4accb9d0d17c7e@changeid Signed-off-by: Johannes Berg Signed-off-by: Sasha Levin --- drivers/net/wireless/intel/iwlwifi/mvm/ops.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/ops.c b/drivers/net/wireless/intel/iwlwifi/mvm/ops.c index 9711841bb4564..3d91293cc250d 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/ops.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/ops.c @@ -1697,8 +1697,11 @@ static void iwl_mvm_queue_state_change(struct iwl_op_mode *op_mode, else set_bit(IWL_MVM_TXQ_STATE_STOP_FULL, &mvmtxq->state); - if (start && mvmsta->sta_state != IEEE80211_STA_NOTEXIST) + if (start && mvmsta->sta_state != IEEE80211_STA_NOTEXIST) { + local_bh_disable(); iwl_mvm_mac_itxq_xmit(mvm->hw, txq); + local_bh_enable(); + } } out: -- 2.39.2