From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753508AbbCYTne (ORCPT ); Wed, 25 Mar 2015 15:43:34 -0400 Received: from atrey.karlin.mff.cuni.cz ([195.113.26.193]:58043 "EHLO atrey.karlin.mff.cuni.cz" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752257AbbCYTnc (ORCPT ); Wed, 25 Mar 2015 15:43:32 -0400 Date: Wed, 25 Mar 2015 20:43:00 +0100 From: Pavel Machek To: Adrian Hunter Cc: Ulf Hansson , linux-mmc , "Rafael J. Wysocki" , Len Brown , Kevin Hilman , Tomeu Vizoso , linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [RFC PATCH 0/4] mmc: sdhci: Support maximum DMA latency request via PM QoS Message-ID: <20150325194259.GB381@amd> References: <1427204440-3533-1-git-send-email-adrian.hunter@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1427204440-3533-1-git-send-email-adrian.hunter@intel.com> User-Agent: Mutt/1.5.23 (2014-03-12) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi! > Here are some patches to address an issue with SDHCI > in Intel Baytrail. Intel Baytrail has been observed > sometimes to hang if host controllers are using DMA > while deep C-states are used. Workaround that by I wonder if there is more information on this one? I see your address is "@intel". For example which C states are affected, and if there's maybe Intel errata number to quote? Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html