From patchwork Tue Mar 18 21:40:57 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sebastian Capella X-Patchwork-Id: 3856381 Return-Path: X-Original-To: patchwork-linux-pm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork1.web.kernel.org (Postfix) with ESMTP id B584B9F369 for ; Wed, 19 Mar 2014 17:58:00 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id D5D9420131 for ; Wed, 19 Mar 2014 17:57:59 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 14A8D2021A for ; Wed, 19 Mar 2014 17:57:59 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757768AbaCRVlE (ORCPT ); Tue, 18 Mar 2014 17:41:04 -0400 Received: from mail-pa0-f42.google.com ([209.85.220.42]:34308 "EHLO mail-pa0-f42.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755936AbaCRVlB (ORCPT ); Tue, 18 Mar 2014 17:41:01 -0400 Received: by mail-pa0-f42.google.com with SMTP id fb1so7962122pad.29 for ; Tue, 18 Mar 2014 14:41:01 -0700 (PDT) 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=JF9BgGaihqNKxhSvA+B1j5xok3mMQQGwoar0iddVens=; b=fcmqG4V4p+kLrF9ffyb82p9PtNyhziyVyosDXF0p94LaP4Uk92sgHcethDxo5LkWcS /RvBaKDJctqc7O4Sf8virQfBEZ7WjNwFO/PubmLRSqDQWwt525BQ5TYdL7vzNU+CyNEo YWnAiGWKPMkwTSFs/sLFmzab98FgNRXii7o4AlMDHMbdzHmY3YPJJpv29LIron7NXvtN iW+Dt7r1pjBDnN6WVsdLjqgy3h0v8QGvwwH9EVFJCvIC4O6CO72E8lqjw+oD0rfokRfQ u3HnCoUOxeRFKIWuY3FDXOgvIHxAa6jGWsgzSm5wAwseC9RqUBZL4Zeep7TS6AtHeIdC LmJw== X-Gm-Message-State: ALoCoQlVg86CKqUtYfsDcxnU4yZWpvUiGkiyg438TfI7mgseZznz6rWeHCv3rFtXMNoXZOD9vX2m X-Received: by 10.68.139.2 with SMTP id qu2mr965241pbb.164.1395178861456; Tue, 18 Mar 2014 14:41:01 -0700 (PDT) Received: from localhost (cpe-76-93-135-111.san.res.rr.com. [76.93.135.111]) by mx.google.com with ESMTPSA id ug9sm55763394pbc.11.2014.03.18.14.40.58 for (version=TLSv1.2 cipher=RC4-SHA bits=128/128); Tue, 18 Mar 2014 14:41:00 -0700 (PDT) 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 , Will Deacon , Robin Holt , Thomas Gleixner , Konstantin Khlebnikov , Steven Capper , Stephen Warren , Tejun Heo Subject: [PATCH v9 1/2] ARM: avoid tracers in soft_restart Date: Tue, 18 Mar 2014 14:40:57 -0700 Message-Id: <1395178858-27343-2-git-send-email-sebastian.capella@linaro.org> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1395178858-27343-1-git-send-email-sebastian.capella@linaro.org> References: <1395178858-27343-1-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=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, T_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 abort loops when called with irqs disabled using a temporary stack. 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: Will Deacon Cc: Robin Holt Cc: Thomas Gleixner Cc: Konstantin Khlebnikov Cc: Steven Capper Cc: Stephen Warren Cc: Tejun Heo --- 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. */