From mboxrd@z Thu Jan 1 00:00:00 1970 From: Florian Mickler Subject: Re: [PATCH] - race-free suspend. Was: Re: [linux-pm] [PATCH 0/8] Suspend block api (version 8) Date: Wed, 2 Jun 2010 10:50:39 +0200 Message-ID: <20100602105039.068c5e00@schatten.dmk.lab> References: <201006010005.19554.rjw@sisk.pl> <20100601090023.788cabf4@notabene.brown> <201006010232.20263.rjw@sisk.pl> <20100601113309.609349fd@notabene.brown> <20100601122012.1edeaf48@notabene.brown> <20100602153235.340a7852@notabene.brown> <20100602180614.729246ea@notabene.brown> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Return-path: Received: from ist.d-labs.de ([213.239.218.44]:35500 "EHLO mx01.d-labs.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753403Ab0FBIuv (ORCPT ); Wed, 2 Jun 2010 04:50:51 -0400 In-Reply-To: <20100602180614.729246ea@notabene.brown> Sender: linux-omap-owner@vger.kernel.org List-Id: linux-omap@vger.kernel.org To: Neil Brown Cc: Arve =?ISO-8859-15?Q?Hj=F8nnev=E5g?= , Thomas Gleixner , "Rafael J. Wysocki" , Alan Stern , Felipe Balbi , Peter Zijlstra , "Paul@smtp1.linux-foundation.org" , LKML , Linux OMAP Mailing List , Linux PM , Alan Cox , James Bottomley On Wed, 2 Jun 2010 18:06:14 +1000 Neil Brown wrote: > I cannot imagine why it would take multiple seconds to scan a keypad. > Can you explain that? > > Do you mean while keys are held pressed? Maybe you don't get a wake-up event > on key-release? In that case your user-space daemon could block suspend > while there are any pressed keys.... confused. IIRC, the device sends interrupts only for first key-down and last key-up. To detect simultaneous key-presses you must actively scan it after the first key-down. > > -- > To unsubscribe from this list: send the line "unsubscribe linux-omap" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html >