From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933411AbbIVJ6r (ORCPT ); Tue, 22 Sep 2015 05:58:47 -0400 Received: from devils.ext.ti.com ([198.47.26.153]:52674 "EHLO devils.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933263AbbIVJ4F (ORCPT ); Tue, 22 Sep 2015 05:56:05 -0400 From: Peter Ujfalusi To: , , CC: , , , , , Subject: [PATCH v3 17/24] dmaengine: edma: Print warning when linking slots from different eDMA Date: Tue, 22 Sep 2015 12:54:28 +0300 Message-ID: <1442915675-7121-18-git-send-email-peter.ujfalusi@ti.com> X-Mailer: git-send-email 2.5.2 In-Reply-To: <1442915675-7121-1-git-send-email-peter.ujfalusi@ti.com> References: <1442915675-7121-1-git-send-email-peter.ujfalusi@ti.com> MIME-Version: 1.0 Content-Type: text/plain Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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 d759abc80bef..b0102984e98d 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) -- 2.5.2