From patchwork Thu Mar 28 13:10:07 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Manjunathappa, Prakash" X-Patchwork-Id: 2356751 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork1.kernel.org Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) by patchwork1.kernel.org (Postfix) with ESMTP id 47BB73FDDA for ; Thu, 28 Mar 2013 13:13:00 +0000 (UTC) Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1ULCbE-0001JM-NB; Thu, 28 Mar 2013 13:10:36 +0000 Received: from arroyo.ext.ti.com ([192.94.94.40]) by merlin.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1ULCay-0001G5-Ix for linux-arm-kernel@lists.infradead.org; Thu, 28 Mar 2013 13:10:20 +0000 Received: from dbdp20.itg.ti.com ([172.24.170.38]) by arroyo.ext.ti.com (8.13.7/8.13.7) with ESMTP id r2SD9vxF020021; Thu, 28 Mar 2013 08:09:58 -0500 Received: from DBDE71.ent.ti.com (localhost [127.0.0.1]) by dbdp20.itg.ti.com (8.13.8/8.13.8) with ESMTP id r2SD9toS025740; Thu, 28 Mar 2013 18:39:55 +0530 (IST) Received: from dbdp32.itg.ti.com (172.24.170.251) by DBDE71.ent.ti.com (172.24.170.149) with Microsoft SMTP Server id 14.1.323.3; Thu, 28 Mar 2013 18:39:55 +0530 Received: from ucmsshproxy.india.ext.ti.com (dbdp20.itg.ti.com [172.24.170.38]) by dbdp32.itg.ti.com (8.13.8/8.13.8) with SMTP id r2SD9s9J002393; Thu, 28 Mar 2013 18:39:54 +0530 Received: from symphony.india.ext.ti.com (unknown [192.168.247.13]) by ucmsshproxy.india.ext.ti.com (Postfix) with ESMTP id BBBDE158002; Thu, 28 Mar 2013 18:39:54 +0530 (IST) Received: from ubuntu-psp-linux.india.ext.ti.com (ubuntu-psp-linux [192.168.247.46]) by symphony.india.ext.ti.com (8.11.7p1+Sun/8.11.7) with ESMTP id r2SD9sR22942; Thu, 28 Mar 2013 18:39:54 +0530 (IST) From: "Manjunathappa, Prakash" To: , Subject: [PATCH v7 1/5] mmc: davinci: allow driver to work without DMA resource Date: Thu, 28 Mar 2013 18:40:07 +0530 Message-ID: <1364476211-14322-2-git-send-email-prakash.pm@ti.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1364476211-14322-1-git-send-email-prakash.pm@ti.com> References: <1364476211-14322-1-git-send-email-prakash.pm@ti.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20130328_091020_704017_4D7FCBF5 X-CRM114-Status: UNSURE ( 7.97 ) X-CRM114-Notice: Please train this message. X-Spam-Score: -8.2 (--------) X-Spam-Report: SpamAssassin version 3.3.2 on merlin.infradead.org summary: Content analysis details: (-8.2 points) pts rule name description ---- ---------------------- -------------------------------------------------- -5.0 RCVD_IN_DNSWL_HI RBL: Sender listed at http://www.dnswl.org/, high trust [192.94.94.40 listed in list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record -1.3 RP_MATCHES_RCVD Envelope sender domain matches handover relay domain -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1% [score: 0.0000] Cc: mark.rutland@arm.com, hs@denx.de, linux@arm.linux.org.uk, arnd@arndb.de, linux-doc@vger.kernel.org, devicetree-discuss@lists.ozlabs.org, nsekhar@ti.com, rob.herring@calxeda.com, grant.likely@secretlab.ca, "Manjunathappa, Prakash" , rob@landley.net, cjb@laptop.org, linux-arm-kernel@lists.infradead.org X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org Do not return probe failure with missing DMA resources, allow driver to work in PIO mode. Tested on da850-evm by mounting partition followed by file creation and deletion. Signed-off-by: Manjunathappa, Prakash Tested-by: Sekhar Nori --- drivers/mmc/host/davinci_mmc.c | 10 ++++++---- 1 files changed, 6 insertions(+), 4 deletions(-) diff --git a/drivers/mmc/host/davinci_mmc.c b/drivers/mmc/host/davinci_mmc.c index f5d46ea..bd848d3 100644 --- a/drivers/mmc/host/davinci_mmc.c +++ b/drivers/mmc/host/davinci_mmc.c @@ -1191,13 +1191,15 @@ static int __init davinci_mmcsd_probe(struct platform_device *pdev) r = platform_get_resource(pdev, IORESOURCE_DMA, 0); if (!r) - goto out; - host->rxdma = r->start; + dev_warn(&pdev->dev, "RX DMA resource not specified\n"); + else + host->rxdma = r->start; r = platform_get_resource(pdev, IORESOURCE_DMA, 1); if (!r) - goto out; - host->txdma = r->start; + dev_warn(&pdev->dev, "TX DMA resource not specified\n"); + else + host->txdma = r->start; host->mem_res = mem; host->base = ioremap(mem->start, mem_size);