From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Li, Aubrey" Subject: Re: [PATCH] GPIO button wth wakeup attribute is supposed to wake the system up Date: Thu, 10 Jul 2014 10:27:46 +0800 Message-ID: <53BDFA22.2000409@linux.intel.com> References: <53A2340D.9030503@linux.intel.com> <18261725.84uqcyZ8CE@vostro.rjw.lan> <20140709005434.GB14935@core.coreip.homeip.net> <4301161.i6ArOLmcsg@vostro.rjw.lan> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Return-path: Received: from mga14.intel.com ([192.55.52.115]:9863 "EHLO mga14.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755380AbaGJC2T (ORCPT ); Wed, 9 Jul 2014 22:28:19 -0400 In-Reply-To: <4301161.i6ArOLmcsg@vostro.rjw.lan> Sender: linux-input-owner@vger.kernel.org List-Id: linux-input@vger.kernel.org To: "Rafael J. Wysocki" , Dmitry Torokhov Cc: "linux-input@vger.kernel.org" , LKML , One Thousand Gnomes , Linux PM list On 2014/7/9 20:45, Rafael J. Wysocki wrote: > On Tuesday, July 08, 2014 05:54:35 PM Dmitry Torokhov wrote: >> On Wed, Jul 09, 2014 at 02:59:33AM +0200, Rafael J. Wysocki wrote: >>> On Tuesday, July 08, 2014 05:15:06 PM Dmitry Torokhov wrote: >>>> On Wed, Jul 09, 2014 at 01:06:07AM +0200, Rafael J. Wysocki wrote: > > [cut] > >>>> >>>> When device driver marks IRQ as a wakeup source I believe it is prepared >>>> to handle it (or it would shut it off explicitly). >>> >>> I can agree with that. >>> >>> Are you suggesting that __disable_irq() should check irq_data for >>> IRQD_WAKEUP_STATE and skip the IRQ (in the 'suspend' case) if that is set? >> >> Yes, something like that. > > OK Many thanks to you both for the discussion. > > Aubrey, can you please check if the appended patch helps on the T100? I verified this patch on T100, it works as expected, freeze can be waken up by reverting my patch and applying this one. Is this a final solution? Thanks, -Aubrey > > Rafael > > --- > kernel/irq/manage.c | 3 ++- > 1 file changed, 2 insertions(+), 1 deletion(-) > > Index: linux-pm/kernel/irq/manage.c > =================================================================== > --- linux-pm.orig/kernel/irq/manage.c > +++ linux-pm/kernel/irq/manage.c > @@ -385,7 +385,8 @@ setup_affinity(unsigned int irq, struct > void __disable_irq(struct irq_desc *desc, unsigned int irq, bool suspend) > { > if (suspend) { > - if (!desc->action || (desc->action->flags & IRQF_NO_SUSPEND)) > + if (!desc->action || (desc->action->flags & IRQF_NO_SUSPEND) > + || irqd_has_set(&desc->irq_data, IRQD_WAKEUP_STATE)) > return; > desc->istate |= IRQS_SUSPENDED; > } > > -- > 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/ > >