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 X-Spam-Level: X-Spam-Status: No, score=-19.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id D41A8C433B4 for ; Fri, 30 Apr 2021 14:21:35 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 8FA5C6128C for ; Fri, 30 Apr 2021 14:21:35 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233412AbhD3OWV (ORCPT ); Fri, 30 Apr 2021 10:22:21 -0400 Received: from mail.kernel.org ([198.145.29.99]:58588 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233355AbhD3OWE (ORCPT ); Fri, 30 Apr 2021 10:22:04 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 9D10061450; Fri, 30 Apr 2021 14:21:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1619792476; bh=HdzK2WZhQMeLw1MN7It46vn2aDnFm2JGDTwIfl0MPRM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=l+t7xe5fto2N6X0aoBo59SLhV6t+TPWLNg0nsKAldbcxnW4LjgDI6GT82lO/GKRRq lp9RwkpOU3Q0RF1glNfs2TmpmWVxsf9JFFY791jDbYZVXB2Ouvl9KjIDsPePiU+W37 NmRg1WYy45HWeMI+hdPvS6tuT5qkyG4kuW5a14D0= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Jiri Kosina , Kalle Valo Subject: [PATCH 5.12 3/5] iwlwifi: Fix softirq/hardirq disabling in iwl_pcie_gen2_enqueue_hcmd() Date: Fri, 30 Apr 2021 16:20:58 +0200 Message-Id: <20210430141911.004078149@linuxfoundation.org> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210430141910.899518186@linuxfoundation.org> References: <20210430141910.899518186@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Jiri Kosina commit e7020bb068d8be50a92f48e36b236a1a1ef9282e upstream. Analogically to what we did in 2800aadc18a6 ("iwlwifi: Fix softirq/hardirq disabling in iwl_pcie_enqueue_hcmd()"), we must apply the same fix to iwl_pcie_gen2_enqueue_hcmd(), as it's being called from exactly the same contexts. Reported-by: Heiner Kallweit Signed-off-by: Kalle Valo Link: https://lore.kernel.org/r/nycvar.YFH.7.76.2104171112390.18270@cbobk.fhfr.pm Signed-off-by: Greg Kroah-Hartman --- drivers/net/wireless/intel/iwlwifi/pcie/tx-gen2.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) --- a/drivers/net/wireless/intel/iwlwifi/pcie/tx-gen2.c +++ b/drivers/net/wireless/intel/iwlwifi/pcie/tx-gen2.c @@ -40,6 +40,7 @@ int iwl_pcie_gen2_enqueue_hcmd(struct iw const u8 *cmddata[IWL_MAX_CMD_TBS_PER_TFD]; u16 cmdlen[IWL_MAX_CMD_TBS_PER_TFD]; struct iwl_tfh_tfd *tfd; + unsigned long flags; copy_size = sizeof(struct iwl_cmd_header_wide); cmd_size = sizeof(struct iwl_cmd_header_wide); @@ -108,14 +109,14 @@ int iwl_pcie_gen2_enqueue_hcmd(struct iw goto free_dup_buf; } - spin_lock_bh(&txq->lock); + spin_lock_irqsave(&txq->lock, flags); idx = iwl_txq_get_cmd_index(txq, txq->write_ptr); tfd = iwl_txq_get_tfd(trans, txq, txq->write_ptr); memset(tfd, 0, sizeof(*tfd)); if (iwl_txq_space(trans, txq) < ((cmd->flags & CMD_ASYNC) ? 2 : 1)) { - spin_unlock_bh(&txq->lock); + spin_unlock_irqrestore(&txq->lock, flags); IWL_ERR(trans, "No space in command queue\n"); iwl_op_mode_cmd_queue_full(trans->op_mode); @@ -250,7 +251,7 @@ int iwl_pcie_gen2_enqueue_hcmd(struct iw spin_unlock(&trans_pcie->reg_lock); out: - spin_unlock_bh(&txq->lock); + spin_unlock_irqrestore(&txq->lock, flags); free_dup_buf: if (idx < 0) kfree(dup_buf);