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=-3.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham 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 2F1B7C4321D for ; Tue, 21 Aug 2018 06:22:59 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id E8AB421774 for ; Tue, 21 Aug 2018 06:22:58 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org E8AB421774 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=linuxfoundation.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727260AbeHUJlm (ORCPT ); Tue, 21 Aug 2018 05:41:42 -0400 Received: from mail.linuxfoundation.org ([140.211.169.12]:54768 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726628AbeHUJll (ORCPT ); Tue, 21 Aug 2018 05:41:41 -0400 Received: from localhost (5355525A.cm-6-6b.dynamic.ziggo.nl [83.85.82.90]) by mail.linuxfoundation.org (Postfix) with ESMTPSA id A50789D7; Tue, 21 Aug 2018 06:22:55 +0000 (UTC) From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, james.r.harris@intel.com, Ahsan Atta Subject: [PATCH 4.18 26/35] Revert "uio: use request_threaded_irq instead" Date: Tue, 21 Aug 2018 08:20:52 +0200 Message-Id: <20180821055021.123920436@linuxfoundation.org> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20180821055019.954904905@linuxfoundation.org> References: <20180821055019.954904905@linuxfoundation.org> User-Agent: quilt/0.65 X-stable: review MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 4.18-stable review patch. If anyone has any objections, please let me know. ------------------ From: Xiubo Li commit 3d27c4de8d4fb2d4099ff324671792aa2578c6f9 upstream. Since mutex lock in irq hanler is useless currently, here will remove it together with it. This reverts commit 9421e45f5ff3d558cf8b75a8cc0824530caf3453. Reported-by: james.r.harris@intel.com CC: Ahsan Atta Signed-off-by: Greg Kroah-Hartman Signed-off-by: Greg Kroah-Hartman --- drivers/uio/uio.c | 8 ++------ 1 file changed, 2 insertions(+), 6 deletions(-) --- a/drivers/uio/uio.c +++ b/drivers/uio/uio.c @@ -443,13 +443,10 @@ static irqreturn_t uio_interrupt(int irq struct uio_device *idev = (struct uio_device *)dev_id; irqreturn_t ret; - mutex_lock(&idev->info_lock); - ret = idev->info->handler(irq, idev->info); if (ret == IRQ_HANDLED) uio_event_notify(idev->info); - mutex_unlock(&idev->info_lock); return ret; } @@ -969,9 +966,8 @@ int __uio_register_device(struct module * FDs at the time of unregister and therefore may not be * freed until they are released. */ - ret = request_threaded_irq(info->irq, NULL, uio_interrupt, - info->irq_flags, info->name, idev); - + ret = request_irq(info->irq, uio_interrupt, + info->irq_flags, info->name, idev); if (ret) goto err_request_irq; }