Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754708Ab2HVIpm (ORCPT ); Wed, 22 Aug 2012 04:45:42 -0400 Received: from eu1sys200aog102.obsmtp.com ([207.126.144.113]:43096 "EHLO eu1sys200aog102.obsmtp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751880Ab2HVIoa (ORCPT ); Wed, 22 Aug 2012 04:44:30 -0400 From: Linus Walleij To: , , Samuel Ortiz Cc: Etienne Carriere , Linus Walleij Subject: [PATCH 2/7] mfd/ab8500: MASK_ON_SUSPEND Date: Wed, 22 Aug 2012 10:43:56 +0200 Message-ID: <1345625036-5643-1-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: 1631 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. Cc: Samuel Ortiz Signed-off-by: Etienne Carriere Signed-off-by: Linus Walleij --- drivers/mfd/ab8500-core.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/mfd/ab8500-core.c b/drivers/mfd/ab8500-core.c index 626b4ec..b25a0b0 100644 --- a/drivers/mfd/ab8500-core.c +++ b/drivers/mfd/ab8500-core.c @@ -386,6 +386,7 @@ static struct irq_chip ab8500_irq_chip = { .irq_mask = ab8500_irq_mask, .irq_disable = ab8500_irq_mask, .irq_unmask = ab8500_irq_unmask, + .flags = IRQCHIP_MASK_ON_SUSPEND, }; static int ab8500_handle_hierarchical_line(struct ab8500 *ab8500, -- 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/