Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756706Ab0G2KQz (ORCPT ); Thu, 29 Jul 2010 06:16:55 -0400 Received: from smtp02.citrix.com ([66.165.176.63]:28804 "EHLO SMTP02.CITRIX.COM" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756610Ab0G2KQp (ORCPT ); Thu, 29 Jul 2010 06:16:45 -0400 X-IronPort-AV: E=Sophos;i="4.55,279,1278302400"; d="scan'208";a="107549395" From: Ian Campbell To: linux-kernel@vger.kernel.org Cc: Ian Campbell , Thomas Gleixner , Jeremy Fitzhardinge , Dmitry Torokhov , Benjamin Herrenschmidt , Paul Mackerras , Grant Likely , xen-devel@lists.xensource.com, linux-input@vger.kernel.org, linuxppc-dev@ozlabs.org, devicetree-discuss@lists.ozlabs.org Subject: [PATCH 1/4] irq: Add new IRQ flag IRQF_NO_SUSPEND Date: Thu, 29 Jul 2010 11:16:32 +0100 Message-Id: <1280398595-29708-1-git-send-email-ian.campbell@citrix.com> X-Mailer: git-send-email 1.5.6.5 In-Reply-To: <1280398573.24292.1684.camel@zakaz.uk.xensource.com> References: <1280398573.24292.1684.camel@zakaz.uk.xensource.com> X-OriginalArrivalTime: 29 Jul 2010 10:16:44.0429 (UTC) FILETIME=[251F83D0:01CB2F07] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2579 Lines: 70 A small number of users of IRQF_TIMER are using it for the implied no suspend behaviour on interrupts which are not timer interrupts. Therefore add a new IRQF_NO_SUSPEND flag, rename IRQF_TIMER to __IRQF_TIMER and redefine IRQF_TIMER in terms of these new flags. Signed-off-by: Ian Campbell Cc: Thomas Gleixner Cc: Jeremy Fitzhardinge Cc: Dmitry Torokhov Cc: Benjamin Herrenschmidt Cc: Paul Mackerras Cc: Grant Likely Cc: xen-devel@lists.xensource.com Cc: linux-input@vger.kernel.org Cc: linuxppc-dev@ozlabs.org Cc: devicetree-discuss@lists.ozlabs.org --- include/linux/interrupt.h | 7 ++++++- kernel/irq/manage.c | 2 +- 2 files changed, 7 insertions(+), 2 deletions(-) diff --git a/include/linux/interrupt.h b/include/linux/interrupt.h index c233113..a0384a4 100644 --- a/include/linux/interrupt.h +++ b/include/linux/interrupt.h @@ -53,16 +53,21 @@ * IRQF_ONESHOT - Interrupt is not reenabled after the hardirq handler finished. * Used by threaded interrupts which need to keep the * irq line disabled until the threaded handler has been run. + * IRQF_NO_SUSPEND - Do not disable this IRQ during suspend + * */ #define IRQF_DISABLED 0x00000020 #define IRQF_SAMPLE_RANDOM 0x00000040 #define IRQF_SHARED 0x00000080 #define IRQF_PROBE_SHARED 0x00000100 -#define IRQF_TIMER 0x00000200 +#define __IRQF_TIMER 0x00000200 #define IRQF_PERCPU 0x00000400 #define IRQF_NOBALANCING 0x00000800 #define IRQF_IRQPOLL 0x00001000 #define IRQF_ONESHOT 0x00002000 +#define IRQF_NO_SUSPEND 0x00004000 + +#define IRQF_TIMER (__IRQF_TIMER | IRQF_NO_SUSPEND) /* * Bits used by threaded handlers: diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c index e149748..c3003e9 100644 --- a/kernel/irq/manage.c +++ b/kernel/irq/manage.c @@ -216,7 +216,7 @@ static inline int setup_affinity(unsigned int irq, struct irq_desc *desc) void __disable_irq(struct irq_desc *desc, unsigned int irq, bool suspend) { if (suspend) { - if (!desc->action || (desc->action->flags & IRQF_TIMER)) + if (!desc->action || (desc->action->flags & IRQF_NO_SUSPEND)) return; desc->status |= IRQ_SUSPENDED; } -- 1.5.6.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/