From patchwork Fri Mar 7 13:02:23 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: pekon gupta X-Patchwork-Id: 327948 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 ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id C422D2C0356 for ; Sat, 8 Mar 2014 00:03:58 +1100 (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 1WLuR3-0005Ah-Mx; Fri, 07 Mar 2014 13:03:33 +0000 Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1WLuQu-0008Ez-Iq; Fri, 07 Mar 2014 13:03:24 +0000 Received: from comal.ext.ti.com ([198.47.26.152]) by merlin.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1WLuQd-0008AQ-JU for linux-mtd@lists.infradead.org; Fri, 07 Mar 2014 13:03:10 +0000 Received: from dflxv15.itg.ti.com ([128.247.5.124]) by comal.ext.ti.com (8.13.7/8.13.7) with ESMTP id s27D2hqN003133; Fri, 7 Mar 2014 07:02:43 -0600 Received: from DLEE71.ent.ti.com (dlee71.ent.ti.com [157.170.170.114]) by dflxv15.itg.ti.com (8.14.3/8.13.8) with ESMTP id s27D2hVG001148; Fri, 7 Mar 2014 07:02:43 -0600 Received: from dlep32.itg.ti.com (157.170.170.100) by DLEE71.ent.ti.com (157.170.170.114) with Microsoft SMTP Server id 14.3.174.1; Fri, 7 Mar 2014 07:02:42 -0600 Received: from psplinux063.india.ti.com (ileax41-snat.itg.ti.com [10.172.224.153]) by dlep32.itg.ti.com (8.14.3/8.13.8) with ESMTP id s27D2WTm030982; Fri, 7 Mar 2014 07:02:41 -0600 From: Pekon Gupta To: Brian Norris Subject: [PATCH v6 3/4] mtd: devices: elm: configure parallel channels based on ecc_steps Date: Fri, 7 Mar 2014 18:32:23 +0530 Message-ID: <1394197344-9468-4-git-send-email-pekon@ti.com> X-Mailer: git-send-email 1.8.5.1.163.gd7aced9 In-Reply-To: <1394197344-9468-1-git-send-email-pekon@ti.com> References: <1394197344-9468-1-git-send-email-pekon@ti.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20140307_080307_920104_A9E86E5F X-CRM114-Status: UNSURE ( 7.43 ) X-CRM114-Notice: Please train this message. X-Spam-Score: -6.9 (------) X-Spam-Report: SpamAssassin version 3.3.2 on merlin.infradead.org summary: Content analysis details: (-6.9 points) pts rule name description ---- ---------------------- -------------------------------------------------- -5.0 RCVD_IN_DNSWL_HI RBL: Sender listed at http://www.dnswl.org/, high trust [198.47.26.152 listed in list.dnswl.org] -0.0 T_RP_MATCHES_RCVD Envelope sender domain matches handover relay domain -0.0 SPF_PASS SPF: sender matches SPF record -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1% [score: 0.0000] Cc: avinashphilipk@gmail.com, Felipe Balbi , linux-mtd , Pekon Gupta , Ezequiel Garcia , Stefan Roese 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 Though ELM hardware can process upto maximum of 8 channels in parallel for ECC error detection. But actual number of channels need to be processed in parallel depends on ecc_steps (for page mode configuration). Signed-off-by: Pekon Gupta --- drivers/mtd/devices/elm.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/mtd/devices/elm.c b/drivers/mtd/devices/elm.c index f59c100..43fd81d 100644 --- a/drivers/mtd/devices/elm.c +++ b/drivers/mtd/devices/elm.c @@ -174,7 +174,7 @@ static void elm_load_syndrome(struct elm_info *info, int i, offset; u32 val; - for (i = 0; i < ERROR_VECTOR_MAX; i++) { + for (i = 0; i < info->ecc_steps; i++) { /* Check error reported */ if (err_vec[i].error_reported) { @@ -242,7 +242,7 @@ static void elm_start_processing(struct elm_info *info, * Set syndrome vector valid, so that ELM module * will process it for vectors error is reported */ - for (i = 0; i < ERROR_VECTOR_MAX; i++) { + for (i = 0; i < info->ecc_steps; i++) { if (err_vec[i].error_reported) { offset = ELM_SYNDROME_FRAGMENT_6 + SYNDROME_FRAGMENT_REG_SIZE * i; @@ -271,7 +271,7 @@ static void elm_error_correction(struct elm_info *info, int offset; u32 reg_val; - for (i = 0; i < ERROR_VECTOR_MAX; i++) { + for (i = 0; i < info->ecc_steps; i++) { /* Check error reported */ if (err_vec[i].error_reported) {