From patchwork Sat Jan 29 11:16:16 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Luca Coelho X-Patchwork-Id: 12729432 X-Patchwork-Delegate: luca@coelho.fi 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 7A622C433F5 for ; Sat, 29 Jan 2022 11:16:36 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237398AbiA2LQe (ORCPT ); Sat, 29 Jan 2022 06:16:34 -0500 Received: from paleale.coelho.fi ([176.9.41.70]:37880 "EHLO farmhouse.coelho.fi" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S237233AbiA2LQc (ORCPT ); Sat, 29 Jan 2022 06:16:32 -0500 Received: from 91-156-4-210.elisa-laajakaista.fi ([91.156.4.210] helo=kveik.lan) by farmhouse.coelho.fi with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.95) (envelope-from ) id 1nDliY-0002ji-5V; Sat, 29 Jan 2022 13:16:31 +0200 From: Luca Coelho To: kvalo@kernel.org Cc: luca@coelho.fi, linux-wireless@vger.kernel.org Date: Sat, 29 Jan 2022 13:16:16 +0200 Message-Id: X-Mailer: git-send-email 2.34.1 In-Reply-To: <20220129111622.678447-1-luca@coelho.fi> References: <20220129111622.678447-1-luca@coelho.fi> MIME-Version: 1.0 Subject: [PATCH 06/12] iwlwifi: mvm: align locking in D3 test debugfs Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org From: Johannes Berg Since commit a05829a7222e ("cfg80211: avoid holding the RTNL when calling the driver") we're not only holding the RTNL when going in and out of suspend, but also the wiphy->mtx. Add that to the D3 test debugfs in iwlwifi since it's required for various calls to mac80211. Fixes: a05829a7222e ("cfg80211: avoid holding the RTNL when calling the driver") Signed-off-by: Johannes Berg Fixes: a05829a7222e ("cfg80211: avoid holding the RTNL when calling the driver") Signed-off-by: Luca Coelho --- drivers/net/wireless/intel/iwlwifi/mvm/d3.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/d3.c b/drivers/net/wireless/intel/iwlwifi/mvm/d3.c index 9f0e436f11f3..a995bba0ba81 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/d3.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/d3.c @@ -2697,7 +2697,9 @@ static int iwl_mvm_d3_test_open(struct inode *inode, struct file *file) /* start pseudo D3 */ rtnl_lock(); + wiphy_lock(mvm->hw->wiphy); err = __iwl_mvm_suspend(mvm->hw, mvm->hw->wiphy->wowlan_config, true); + wiphy_unlock(mvm->hw->wiphy); rtnl_unlock(); if (err > 0) err = -EINVAL; @@ -2753,7 +2755,9 @@ static int iwl_mvm_d3_test_release(struct inode *inode, struct file *file) iwl_fw_dbg_read_d3_debug_data(&mvm->fwrt); rtnl_lock(); + wiphy_lock(mvm->hw->wiphy); __iwl_mvm_resume(mvm, true); + wiphy_unlock(mvm->hw->wiphy); rtnl_unlock(); iwl_mvm_resume_tcm(mvm);