From patchwork Wed Oct 14 11:42:59 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Peter Ujfalusi X-Patchwork-Id: 7392881 Return-Path: X-Original-To: patchwork-linux-omap@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 3D161BEEA4 for ; Wed, 14 Oct 2015 11:48:35 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 84BFE206E8 for ; Wed, 14 Oct 2015 11:48:34 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id A9D7E207A8 for ; Wed, 14 Oct 2015 11:48:32 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932458AbbJNLon (ORCPT ); Wed, 14 Oct 2015 07:44:43 -0400 Received: from devils.ext.ti.com ([198.47.26.153]:38802 "EHLO devils.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932096AbbJNLok (ORCPT ); Wed, 14 Oct 2015 07:44:40 -0400 Received: from dflxv15.itg.ti.com ([128.247.5.124]) by devils.ext.ti.com (8.13.7/8.13.7) with ESMTP id t9EBi9uT017965; Wed, 14 Oct 2015 06:44:09 -0500 Received: from DFLE72.ent.ti.com (dfle72.ent.ti.com [128.247.5.109]) by dflxv15.itg.ti.com (8.14.3/8.13.8) with ESMTP id t9EBi9EA006028; Wed, 14 Oct 2015 06:44:09 -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 14.3.224.2; Wed, 14 Oct 2015 06:44:09 -0500 Received: from dflp32.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 t9EBh950002537; Wed, 14 Oct 2015 06:44:06 -0500 From: Peter Ujfalusi To: , , CC: , , , , , Subject: [PATCH v5 17/24] dmaengine: edma: Print warning when linking slots from different eDMA Date: Wed, 14 Oct 2015 14:42:59 +0300 Message-ID: <1444822986-20562-18-git-send-email-peter.ujfalusi@ti.com> X-Mailer: git-send-email 2.6.1 In-Reply-To: <1444822986-20562-1-git-send-email-peter.ujfalusi@ti.com> References: <1444822986-20562-1-git-send-email-peter.ujfalusi@ti.com> MIME-Version: 1.0 Sender: linux-omap-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-omap@vger.kernel.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, T_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 Warning message in case of linking between paRAM slots in different eDMA controllers. Signed-off-by: Peter Ujfalusi --- drivers/dma/edma.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/dma/edma.c b/drivers/dma/edma.c index f6653da0ee16..d33ae0b43925 100644 --- a/drivers/dma/edma.c +++ b/drivers/dma/edma.c @@ -619,6 +619,9 @@ static void edma_free_slot(struct edma_cc *ecc, unsigned slot) */ static void edma_link(struct edma_cc *ecc, unsigned from, unsigned to) { + if (unlikely(EDMA_CTLR(from) != EDMA_CTLR(to))) + dev_warn(ecc->dev, "Ignoring eDMA instance for linking\n"); + from = EDMA_CHAN_SLOT(from); to = EDMA_CHAN_SLOT(to); if (from >= ecc->num_slots || to >= ecc->num_slots)