From patchwork Mon Aug 5 16:14:48 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Joel Fernandes X-Patchwork-Id: 2838846 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 7BB26BF535 for ; Mon, 5 Aug 2013 16:57:00 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 484B0202BA for ; Mon, 5 Aug 2013 16:56:59 +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 09843202C3 for ; Mon, 5 Aug 2013 16:56:58 +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 1V6NSo-0003My-TG; Mon, 05 Aug 2013 16:16:56 +0000 Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1V6NRn-00007B-J6; Mon, 05 Aug 2013 16:15:51 +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 1V6NRk-00005t-N4 for linux-arm-kernel@lists.infradead.org; Mon, 05 Aug 2013 16:15:49 +0000 Received: from dlelxv90.itg.ti.com ([172.17.2.17]) by arroyo.ext.ti.com (8.13.7/8.13.7) with ESMTP id r75GF83v029302; Mon, 5 Aug 2013 11:15:08 -0500 Received: from DFLE73.ent.ti.com (dfle73.ent.ti.com [128.247.5.110]) by dlelxv90.itg.ti.com (8.14.3/8.13.8) with ESMTP id r75GF8qX022045; Mon, 5 Aug 2013 11:15:08 -0500 Received: from dlelxv22.itg.ti.com (172.17.1.197) by DFLE73.ent.ti.com (128.247.5.110) with Microsoft SMTP Server id 14.2.342.3; Mon, 5 Aug 2013 11:15:07 -0500 Received: from joel-laptop.itg.ti.com (h0-56.vpn.ti.com [172.24.0.56]) by dlelxv22.itg.ti.com (8.13.8/8.13.8) with ESMTP id r75GEv1L026253; Mon, 5 Aug 2013 11:15:07 -0500 From: Joel Fernandes To: Tony Lindgren , Sekhar Nori , Santosh Shilimkar , Sricharan R , Rajendra Nayak , Lokesh Vutla , Matt Porter , Grant Likely , Rob Herring , Vinod Koul , Dan Williams , Mark Brown , Benoit Cousson , Russell King , Arnd Bergmann , Olof Johansson , Balaji TK , Gururaja Hebbar , Chris Ball , Jason Kridner Subject: [PATCH v3 03/12] dma: edma: remove limits on number of slots Date: Mon, 5 Aug 2013 11:14:48 -0500 Message-ID: <1375719297-12871-4-git-send-email-joelf@ti.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1375719297-12871-1-git-send-email-joelf@ti.com> References: <1375719297-12871-1-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-20130805_121548_848404_D2DF1C05 X-CRM114-Status: GOOD ( 11.43 ) X-Spam-Score: -5.2 (-----) Cc: Linux DaVinci Kernel List , Joel Fernandes , Linux MMC List , Linux Kernel Mailing List , 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=-2.5 required=5.0 tests=BAYES_00,KHOP_BIG_TO_CC, RCVD_IN_DNSWL_MED,RP_MATCHES_RCVD,UNPARSEABLE_RELAY autolearn=ham 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 7b0853c..b6d609c 100644 --- a/drivers/dma/edma.c +++ b/drivers/dma/edma.c @@ -247,12 +247,6 @@ 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) {