From patchwork Thu Aug 29 23:05:45 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Joel Fernandes X-Patchwork-Id: 2851652 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork2.web.kernel.org (Postfix) with ESMTP id B54BEC0AB5 for ; Thu, 29 Aug 2013 23:08:26 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id ED8292050F for ; Thu, 29 Aug 2013 23:08:25 +0000 (UTC) Received: from casper.infradead.org (casper.infradead.org [85.118.1.10]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 0325B20502 for ; Thu, 29 Aug 2013 23:08:25 +0000 (UTC) Received: from merlin.infradead.org ([2001:4978:20e::2]) by casper.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1VFBJQ-0004Zf-1F; Thu, 29 Aug 2013 23:07:36 +0000 Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1VFBJ5-0004F1-0Q; Thu, 29 Aug 2013 23:07:15 +0000 Received: from devils.ext.ti.com ([198.47.26.153]) by merlin.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1VFBIP-00049f-31 for linux-arm-kernel@lists.infradead.org; Thu, 29 Aug 2013 23:06:34 +0000 Received: from dlelxv90.itg.ti.com ([172.17.2.17]) by devils.ext.ti.com (8.13.7/8.13.7) with ESMTP id r7TN64ON010585; Thu, 29 Aug 2013 18:06:04 -0500 Received: from DFLE72.ent.ti.com (dfle72.ent.ti.com [128.247.5.109]) by dlelxv90.itg.ti.com (8.14.3/8.13.8) with ESMTP id r7TN64Ag021216; Thu, 29 Aug 2013 18:06:04 -0500 Received: from dlep32.itg.ti.com (157.170.170.100) by DFLE72.ent.ti.com (128.247.5.109) with Microsoft SMTP Server id 14.2.342.3; Thu, 29 Aug 2013 18:06:04 -0500 Received: from joel-laptop.itg.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 r7TN5j0e030581; Thu, 29 Aug 2013 18:06:03 -0500 From: Joel Fernandes To: Sekhar Nori , Matt Porter , Vinod Koul , Dan Williams , Russell King , Sricharan R Subject: [PATCH v4 6/6] dma: edma: Remove limits on number of slots Date: Thu, 29 Aug 2013 18:05:45 -0500 Message-ID: <1377817545-18015-7-git-send-email-joelf@ti.com> X-Mailer: git-send-email 1.8.1.2 In-Reply-To: <1377817545-18015-1-git-send-email-joelf@ti.com> References: <1377817545-18015-1-git-send-email-joelf@ti.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20130829_190633_282435_16F659FE X-CRM114-Status: UNSURE ( 9.49 ) X-CRM114-Notice: Please train this message. X-Spam-Score: -9.4 (---------) Cc: Linux DaVinci Kernel List , Joel Fernandes , Koen Kooi , Linux MMC List , Linux Kernel Mailing List , Franklin Cooper , Linux OMAP List , Linux ARM Kernel List 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 X-Spam-Status: No, score=-6.7 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP With this series, this check is no longer required and we shouldn't need to reject drivers DMA'ing more than the MAX number of slots. Signed-off-by: Joel Fernandes --- drivers/dma/edma.c | 6 ------ 1 file changed, 6 deletions(-) diff --git a/drivers/dma/edma.c b/drivers/dma/edma.c index 25e47d4..d966413 100644 --- a/drivers/dma/edma.c +++ b/drivers/dma/edma.c @@ -287,12 +287,6 @@ static struct dma_async_tx_descriptor *edma_prep_slave_sg( return NULL; } - if (sg_len > MAX_NR_SG) { - dev_err(dev, "Exceeded max SG segments %d > %d\n", - sg_len, MAX_NR_SG); - return NULL; - } - edesc = kzalloc(sizeof(*edesc) + sg_len * sizeof(edesc->pset[0]), GFP_ATOMIC); if (!edesc) {