From mboxrd@z Thu Jan 1 00:00:00 1970 From: Per Forlin Subject: Re: [PATCH v2 00/12] mmc: use nonblock mmc requests to minimize latency Date: Mon, 11 Apr 2011 11:03:18 +0200 Message-ID: References: <1302116833-24540-1-git-send-email-per.forlin@linaro.org> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Return-path: Received: from mail-qy0-f174.google.com ([209.85.216.174]:33859 "EHLO mail-qy0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752144Ab1DKJDU (ORCPT ); Mon, 11 Apr 2011 05:03:20 -0400 In-Reply-To: Sender: linux-mmc-owner@vger.kernel.org List-Id: linux-mmc@vger.kernel.org To: anish singh Cc: Jae hoon Chung , Linus Walleij , linux-mmc@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linaro-dev@lists.linaro.org, Chris Ball On 10 April 2011 05:33, anish singh wrote: > > > On Sat, Apr 9, 2011 at 5:25 PM, Jae hoon Chung wrote: >> >> Hi Per.. >> >> I'm applied your patch..and sent the patch about dw_mmc.c. >> I think good this approach.. > > Forlin,i too want to test this patch of yours but unfortunately i have > samsung board+SDHCI host controller so i guess i just need to write pre_req > and post_req functions and that would enable this(nonblock mmc request) on > my board.Hope i am right? You are right. The SDHCI driver should work just fine without implementing pre_req and post_req but you wont see any performance increasing for DMA usage. In order to benefit from the patchset you need to implement pre_req and post_req. If you run into trouble implementing those hooks or if you have any questions please let me know. Regards, Per