From patchwork Thu Sep 10 08:37:46 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Peter Ujfalusi X-Patchwork-Id: 7152011 Return-Path: X-Original-To: patchwork-dmaengine@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 A4D18BEEC1 for ; Thu, 10 Sep 2015 08:39:45 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id DACF020875 for ; Thu, 10 Sep 2015 08:39:44 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 0BC66208C5 for ; Thu, 10 Sep 2015 08:39:44 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753518AbbIJIj3 (ORCPT ); Thu, 10 Sep 2015 04:39:29 -0400 Received: from comal.ext.ti.com ([198.47.26.152]:47958 "EHLO comal.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754439AbbIJIjP (ORCPT ); Thu, 10 Sep 2015 04:39:15 -0400 Received: from dflxv15.itg.ti.com ([128.247.5.124]) by comal.ext.ti.com (8.13.7/8.13.7) with ESMTP id t8A8cnhB031450; Thu, 10 Sep 2015 03:38:49 -0500 Received: from DFLE73.ent.ti.com (dfle73.ent.ti.com [128.247.5.110]) by dflxv15.itg.ti.com (8.14.3/8.13.8) with ESMTP id t8A8cnL7000774; Thu, 10 Sep 2015 03:38:49 -0500 Received: from dlep32.itg.ti.com (157.170.170.100) by DFLE73.ent.ti.com (128.247.5.110) with Microsoft SMTP Server id 14.3.224.2; Thu, 10 Sep 2015 03:38:40 -0500 Received: from dlep32.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 t8A8bqL6018732; Thu, 10 Sep 2015 03:38:47 -0500 From: Peter Ujfalusi To: , , CC: , , , , , Subject: [PATCH 17/21] dmaengine: edma: Print warning when linking slots from different eDMA Date: Thu, 10 Sep 2015 11:37:46 +0300 Message-ID: <1441874270-2399-18-git-send-email-peter.ujfalusi@ti.com> X-Mailer: git-send-email 2.5.1 In-Reply-To: <1441874270-2399-1-git-send-email-peter.ujfalusi@ti.com> References: <1441874270-2399-1-git-send-email-peter.ujfalusi@ti.com> MIME-Version: 1.0 Sender: dmaengine-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: dmaengine@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 e735147ccece..2c6be4c62a73 100644 --- a/drivers/dma/edma.c +++ b/drivers/dma/edma.c @@ -598,6 +598,9 @@ 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)