From mboxrd@z Thu Jan 1 00:00:00 1970 From: Chris Ball Subject: Re: [PATCH] mmc: atmel-mci: fix timeout errors in SDIO mode when using DMA Date: Tue, 26 Nov 2013 17:24:45 -0500 Message-ID: <87zjoqer82.fsf@octavius.laptop.org> References: <1384959671-5646-1-git-send-email-ludovic.desroches@atmel.com> <528E29D0.9080507@atmel.com> Mime-Version: 1.0 Content-Type: text/plain Return-path: Received: from void.printf.net ([89.145.121.20]:59301 "EHLO void.printf.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753636Ab3KZWY4 (ORCPT ); Tue, 26 Nov 2013 17:24:56 -0500 In-Reply-To: <528E29D0.9080507@atmel.com> (Nicolas Ferre's message of "Thu, 21 Nov 2013 16:42:08 +0100") Sender: linux-mmc-owner@vger.kernel.org List-Id: linux-mmc@vger.kernel.org To: Nicolas Ferre Cc: ludovic.desroches@atmel.com, linux-arm-kernel@lists.infradead.org, linux-mmc@vger.kernel.org Hi, On Thu, Nov 21 2013, Nicolas Ferre wrote: > On 20/11/2013 16:01, ludovic.desroches@atmel.com : >> From: Ludovic Desroches >> >> With some SDIO devices, timeout errors can happen when reading data. To solve >> this issue the DMA transfer has to be activated before sending the command to >> the device. This order is incorrect in PDC mode. So we have to take care if we >> are using DMA or PDC to know when to send the MMC command. >> >> Cc: #3.2+ >> Signed-off-by: Ludovic Desroches > > Acked-by: Nicolas Ferre Thanks, pushed to mmc-next for 3.14. - Chris. -- Chris Ball