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=-12.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,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 74B4DC433E1 for ; Mon, 17 Aug 2020 19:08:06 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 4D53920758 for ; Mon, 17 Aug 2020 19:08:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1597691286; bh=0AgMrIP7GP2rYQZIrGzD4CARHK1GDj4u+58ZN43cdUU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=hbbRccx7uXzzglC82TrGrsHnmjz/UuU3dHVCK9DsYrU+Mx3fxz6Qi4w4iQnfiwVoo kC1yTsylcxdYb+AbIJPY18HtMJmRnJ4CoRFhjB2xdyNnIrIjbJLIi+CSoKfA9YHlc2 r8I0rzcP2BL4IfJ5HlGXM37/w4fthjM8WXSmzzgI= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2392008AbgHQTIC (ORCPT ); Mon, 17 Aug 2020 15:08:02 -0400 Received: from mail.kernel.org ([198.145.29.99]:53708 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2387634AbgHQPnV (ORCPT ); Mon, 17 Aug 2020 11:43:21 -0400 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 0B59D20760; Mon, 17 Aug 2020 15:43:20 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1597679001; bh=0AgMrIP7GP2rYQZIrGzD4CARHK1GDj4u+58ZN43cdUU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=AxKHEfpmo1x1KXlNOLQA7eQBjCgoyAazhebylocJ+5Oi+DKdnRzcXZVPjB13OY6R8 dGldD2G5L0wsu2gVsiu4XHNawAOqdudYsogciQ3G9ew4d53dcCpBP729FEXl6Kc0UE CDhosyBEeSrPdkZCXS1N4nYtixz4SCNv/nHLTlW4= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Jianmin Lv , Tiezhu Yang , Marc Zyngier , Sasha Levin Subject: [PATCH 5.7 055/393] irqchip/loongson-liointc: Fix potential dead lock Date: Mon, 17 Aug 2020 17:11:45 +0200 Message-Id: <20200817143822.286279142@linuxfoundation.org> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20200817143819.579311991@linuxfoundation.org> References: <20200817143819.579311991@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Tiezhu Yang [ Upstream commit fa03587cad9bd32aa552377de4f05c50181a35a8 ] In the function liointc_set_type(), we need to call the function irq_gc_unlock_irqrestore() before returning. Fixes: dbb152267908 ("irqchip: Add driver for Loongson I/O Local Interrupt Controller") Reported-by: Jianmin Lv Signed-off-by: Tiezhu Yang Signed-off-by: Marc Zyngier Link: https://lore.kernel.org/r/1594087972-21715-8-git-send-email-yangtiezhu@loongson.cn Signed-off-by: Sasha Levin --- drivers/irqchip/irq-loongson-liointc.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/irqchip/irq-loongson-liointc.c b/drivers/irqchip/irq-loongson-liointc.c index 63b61474a0cc2..6ef86a334c62d 100644 --- a/drivers/irqchip/irq-loongson-liointc.c +++ b/drivers/irqchip/irq-loongson-liointc.c @@ -114,6 +114,7 @@ static int liointc_set_type(struct irq_data *data, unsigned int type) liointc_set_bit(gc, LIOINTC_REG_INTC_POL, mask, false); break; default: + irq_gc_unlock_irqrestore(gc, flags); return -EINVAL; } irq_gc_unlock_irqrestore(gc, flags); -- 2.25.1