Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756955Ab2HVIqO (ORCPT ); Wed, 22 Aug 2012 04:46:14 -0400 Received: from eu1sys200aog117.obsmtp.com ([207.126.144.143]:44982 "EHLO eu1sys200aog117.obsmtp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754372Ab2HVIoX (ORCPT ); Wed, 22 Aug 2012 04:44:23 -0400 From: Linus Walleij To: , , Samuel Ortiz Cc: Etienne Carriere , Linus Walleij Subject: [PATCH 1/7] ux500: GIC: MASK_ON_SUSPEND Date: Wed, 22 Aug 2012 10:43:48 +0200 Message-ID: <1345625028-5608-1-git-send-email-linus.walleij@stericsson.com> X-Mailer: git-send-email 1.7.11.3 MIME-Version: 1.0 Content-Type: text/plain Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1601 Lines: 43 From: Etienne Carriere ux500 machines performs pins (GPIO) reconfiguration when entering in the suspended mode. This reconfiguration aims at reaching an ultra low power HW configuration. Due to this HW reconfiguration, some HW devices can change of HW state and have their output signals at level that could generate IRQs. If the non-wakeup IRQs are disabled but not yet masked (delayed interrupt disable feature from the generic irq layer), effective interrupts reach the system only because the system attempt to enter the suspended mode. To prevent such IRQs to trig, all irq chips embedded in ux500 platform should enable their IRQCHIP_MASK_ON_SUSPEND flag. Signed-off-by: Etienne Carriere Signed-off-by: Linus Walleij --- arch/arm/mach-ux500/cpu.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/arm/mach-ux500/cpu.c b/arch/arm/mach-ux500/cpu.c index e2360e7..84d7f7e 100644 --- a/arch/arm/mach-ux500/cpu.c +++ b/arch/arm/mach-ux500/cpu.c @@ -51,6 +51,8 @@ void __init ux500_init_irq(void) void __iomem *dist_base; void __iomem *cpu_base; + gic_arch_extn.flags = IRQCHIP_MASK_ON_SUSPEND; + if (cpu_is_u8500_family()) { dist_base = __io_address(U8500_GIC_DIST_BASE); cpu_base = __io_address(U8500_GIC_CPU_BASE); -- 1.7.11.3 -- 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/