From patchwork Wed Feb 26 19:10:56 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sebastian Capella X-Patchwork-Id: 3727711 Return-Path: X-Original-To: patchwork-linux-pm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 42373BF13A for ; Wed, 26 Feb 2014 19:11:52 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 5C08B201CD for ; Wed, 26 Feb 2014 19:11:50 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 36BDA20204 for ; Wed, 26 Feb 2014 19:11:49 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754350AbaBZTLK (ORCPT ); Wed, 26 Feb 2014 14:11:10 -0500 Received: from mail-pb0-f50.google.com ([209.85.160.50]:43742 "EHLO mail-pb0-f50.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753644AbaBZTLJ (ORCPT ); Wed, 26 Feb 2014 14:11:09 -0500 Received: by mail-pb0-f50.google.com with SMTP id md12so1395938pbc.23 for ; Wed, 26 Feb 2014 11:11:08 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=xjzlSb3bv4aXM9BbWBPhGAJH49pR3HoxEaItzSqTX48=; b=TVHUX7G577Jb9AcjMl+d/V1GS48mFGorPml59X2d07xyI32Dkhp9bbNtFDZtkpbr83 FTAuHiXegsxmXfubNpB0Q0EumBw4V4n4F9Uegr+2Pmpbniq0nz+ang3VWkRY8LlRF+3C shalMlgimzks6iT/prEJRazQxZhCn0BWVXh4jBFUgC6lo0pN2LkF6RtK372jaB+is+2w AZKEl5FXvuuNJZo3pkuLr2Ia2XxZSMMO8P/rtwB/TQLq2zQu0E/ps/bNRb2F8LKvI9dS vW7u7j7MlGXYfVNvlrXvUEXMjbQ9gFQsunxLjavqzB8+SuKgE9xaz7yqSIBRIB51Pzx+ twsA== X-Gm-Message-State: ALoCoQksc8WqdxZ4dIdTT0ZfIJvDUSekEwjKmD99eVfvVDSDNJChlKd0eqcYodoPABeAKC2PBizD X-Received: by 10.68.171.67 with SMTP id as3mr8456095pbc.105.1393441868241; Wed, 26 Feb 2014 11:11:08 -0800 (PST) Received: from localhost (cpe-76-93-135-111.san.res.rr.com. [76.93.135.111]) by mx.google.com with ESMTPSA id hc4sm5851715pbc.29.2014.02.26.11.11.05 for (version=TLSv1.2 cipher=RC4-SHA bits=128/128); Wed, 26 Feb 2014 11:11:06 -0800 (PST) From: Sebastian Capella To: linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org, linaro-kernel@lists.linaro.org, linux-arm-kernel@lists.infradead.org Cc: Sebastian Capella , Russell King , Andrew Morton , Thomas Gleixner , Will Deacon , Robin Holt , Lorenzo Pieralisi Subject: [PATCH v4 1/2] ARM: avoid tracers in soft_restart Date: Wed, 26 Feb 2014 11:10:56 -0800 Message-Id: <1393441857-15472-2-git-send-email-sebastian.capella@linaro.org> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1393441857-15472-1-git-send-email-sebastian.capella@linaro.org> References: <1393441857-15472-1-git-send-email-sebastian.capella@linaro.org> Sender: linux-pm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org X-Spam-Status: No, score=-3.8 required=5.0 tests=BAYES_00,KHOP_BIG_TO_CC, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Use of tracers in local_irq_disable is causes recursive aborts when called with irqs disabled and using a temporary stack (hibernation). Replace local_irq_disable with raw_local_irq_disable instead to avoid tracers. Signed-off-by: Sebastian Capella Cc: Russell King Cc: Andrew Morton Cc: Thomas Gleixner Cc: Will Deacon Cc: Robin Holt Cc: Lorenzo Pieralisi --- arch/arm/kernel/process.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm/kernel/process.c b/arch/arm/kernel/process.c index 92f7b15..f58b723 100644 --- a/arch/arm/kernel/process.c +++ b/arch/arm/kernel/process.c @@ -100,7 +100,7 @@ void soft_restart(unsigned long addr) u64 *stack = soft_restart_stack + ARRAY_SIZE(soft_restart_stack); /* Disable interrupts first */ - local_irq_disable(); + raw_local_irq_disable(); local_fiq_disable(); /* Disable the L2 if we're the last man standing. */