From patchwork Fri Jun 14 08:06:23 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Huang Shijie X-Patchwork-Id: 251263 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:770:15f::2]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by ozlabs.org (Postfix) with ESMTPS id 8AEF12C007B for ; Fri, 14 Jun 2013 18:31:19 +1000 (EST) Received: from merlin.infradead.org ([2001:4978:20e::2]) by casper.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1UnPOR-0003KT-BF; Fri, 14 Jun 2013 08:29:59 +0000 Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1UnPOB-0001JH-RX; Fri, 14 Jun 2013 08:29:43 +0000 Received: from mail-db8lp0186.outbound.messaging.microsoft.com ([213.199.154.186] helo=db8outboundpool.messaging.microsoft.com) by merlin.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1UnPNl-0001Dn-Iy; Fri, 14 Jun 2013 08:29:18 +0000 Received: from mail74-db8-R.bigfish.com (10.174.8.248) by DB8EHSOBE023.bigfish.com (10.174.4.86) with Microsoft SMTP Server id 14.1.225.23; Fri, 14 Jun 2013 08:28:54 +0000 Received: from mail74-db8 (localhost [127.0.0.1]) by mail74-db8-R.bigfish.com (Postfix) with ESMTP id 8DFE7DC0183; Fri, 14 Jun 2013 08:28:54 +0000 (UTC) X-Forefront-Antispam-Report: CIP:70.37.183.190; KIP:(null); UIP:(null); IPV:NLI; H:mail.freescale.net; RD:none; EFVD:NLI X-SpamScore: 3 X-BigFish: VS3(zzzz1f42h1ee6h1de0h1fdah1202h1e76h1d1ah1d2ah1fc6h1082kzz8275bhz2dh2a8h668h839hd24he5bhf0ah1288h12a5h12a9h12bdh12e5h137ah139eh13b6h1441h1504h1537h162dh1631h1758h1898h18e1h1946h19b5h1ad9h1b0ah1d0ch1d2eh1d3fh1dfeh1dffh1e23h1155h) Received: from mail74-db8 (localhost.localdomain [127.0.0.1]) by mail74-db8 (MessageSwitch) id 1371198533768160_15633; Fri, 14 Jun 2013 08:28:53 +0000 (UTC) Received: from DB8EHSMHS028.bigfish.com (unknown [10.174.8.235]) by mail74-db8.bigfish.com (Postfix) with ESMTP id B82E3A40049; Fri, 14 Jun 2013 08:28:53 +0000 (UTC) Received: from mail.freescale.net (70.37.183.190) by DB8EHSMHS028.bigfish.com (10.174.4.38) with Microsoft SMTP Server (TLS) id 14.16.227.3; Fri, 14 Jun 2013 08:28:53 +0000 Received: from tx30smr01.am.freescale.net (10.81.153.31) by 039-SN1MMR1-005.039d.mgd.msft.net (10.84.1.17) with Microsoft SMTP Server (TLS) id 14.2.328.11; Fri, 14 Jun 2013 08:28:52 +0000 Received: from shlinux2.ap.freescale.net (shlinux2.ap.freescale.net [10.192.224.44]) by tx30smr01.am.freescale.net (8.14.3/8.14.0) with ESMTP id r5E8SelH024613; Fri, 14 Jun 2013 01:28:50 -0700 From: Huang Shijie To: Subject: [PATCH 2/4] mtd: gpmi: use DMA channel 0 for all the nand chips Date: Fri, 14 Jun 2013 16:06:23 +0800 Message-ID: <1371197185-27491-3-git-send-email-b32955@freescale.com> X-Mailer: git-send-email 1.7.1 In-Reply-To: <1371197185-27491-1-git-send-email-b32955@freescale.com> References: <1371197185-27491-1-git-send-email-b32955@freescale.com> MIME-Version: 1.0 X-OriginatorOrg: freescale.com X-FOPE-CONNECTOR: Id%0$Dn%*$RO%0$TLS%0$FQDN%$TlsDn% X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20130614_042917_721969_97AEDFF2 X-CRM114-Status: UNSURE ( 9.72 ) X-CRM114-Notice: Please train this message. X-Spam-Score: -1.9 (-) X-Spam-Report: SpamAssassin version 3.3.2 on merlin.infradead.org summary: Content analysis details: (-1.9 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at http://www.dnswl.org/, no trust [213.199.154.186 listed in list.dnswl.org] -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1% [score: 0.0000] Cc: Huang Shijie , linux-mtd@lists.infradead.org, linux-arm-kernel@lists.infradead.org, dedekind1@gmail.com X-BeenThere: linux-mtd@lists.infradead.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-mtd" Errors-To: linux-mtd-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org We only have one DMA channel : the channel 0. Use DMA channel 0 to access all the nand chips. Signed-off-by: Huang Shijie --- drivers/mtd/nand/gpmi-nand/gpmi-nand.c | 5 ++--- 1 files changed, 2 insertions(+), 3 deletions(-) diff --git a/drivers/mtd/nand/gpmi-nand/gpmi-nand.c b/drivers/mtd/nand/gpmi-nand/gpmi-nand.c index 25ecfa1..036e5e4 100644 --- a/drivers/mtd/nand/gpmi-nand/gpmi-nand.c +++ b/drivers/mtd/nand/gpmi-nand/gpmi-nand.c @@ -226,9 +226,8 @@ int common_nfc_set_geometry(struct gpmi_nand_data *this) struct dma_chan *get_dma_chan(struct gpmi_nand_data *this) { - int chipnr = this->current_chip; - - return this->dma_chans[chipnr]; + /* We use the DMA channel 0 to access all the nand chips. */ + return this->dma_chans[0]; } /* Can we use the upper's buffer directly for DMA? */