From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753400Ab2GTMpX (ORCPT ); Fri, 20 Jul 2012 08:45:23 -0400 Received: from db3ehsobe006.messaging.microsoft.com ([213.199.154.144]:40065 "EHLO db3outboundpool.messaging.microsoft.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752791Ab2GTMpW (ORCPT ); Fri, 20 Jul 2012 08:45:22 -0400 X-Forefront-Antispam-Report: CIP:70.37.183.190;KIP:(null);UIP:(null);IPV:NLI;H:mail.freescale.net;RD:none;EFVD:NLI X-SpamScore: 0 X-BigFish: VS0(zzzz1202hzz8275bhz2dh2a8h668h839hd24he5bhf0ah107ah) From: Zhao Chenhui To: , CC: , Subject: [PATCH] powerpc/smp: Do not disable IPI interrupts during suspend Date: Fri, 20 Jul 2012 20:47:01 +0800 Message-ID: <1342788421-27648-1-git-send-email-chenhui.zhao@freescale.com> X-Mailer: git-send-email 1.6.4.1 MIME-Version: 1.0 Content-Type: text/plain X-OriginatorOrg: freescale.com Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org During suspend, all interrupts including IPI will be disabled. In this case, the suspend process will hang in SMP. To prevent this, pass the flag IRQF_NO_SUSPEND when requesting IPI irq. Signed-off-by: Zhao Chenhui Signed-off-by: Li Yang --- arch/powerpc/kernel/smp.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/arch/powerpc/kernel/smp.c b/arch/powerpc/kernel/smp.c index fecb038..d26bbf8 100644 --- a/arch/powerpc/kernel/smp.c +++ b/arch/powerpc/kernel/smp.c @@ -171,7 +171,7 @@ int smp_request_message_ipi(int virq, int msg) } #endif err = request_irq(virq, smp_ipi_action[msg], - IRQF_PERCPU | IRQF_NO_THREAD, + IRQF_PERCPU | IRQF_NO_THREAD | IRQF_NO_SUSPEND, smp_ipi_name[msg], 0); WARN(err < 0, "unable to request_irq %d for %s (rc %d)\n", virq, smp_ipi_name[msg], err); -- 1.6.4.1