From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id ABE1BC77B73 for ; Mon, 8 May 2023 10:15:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234265AbjEHKPJ (ORCPT ); Mon, 8 May 2023 06:15:09 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44162 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234299AbjEHKPH (ORCPT ); Mon, 8 May 2023 06:15:07 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 48BD419413 for ; Mon, 8 May 2023 03:15:06 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id D17C66246C for ; Mon, 8 May 2023 10:15:05 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id E8148C433D2; Mon, 8 May 2023 10:15:04 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1683540905; bh=y2N7+oE41vBXkxludOGv3SC0Y9LV09mk2h/wIlGf6eI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=TNRtgGJOlK7xtXhyn+d0xzvlsETkf4hU6pLqevX1qKRUntPe60BL1p/l6GvhFVnNs ETocEMpa/uKeMfj74TTjcYKFDLJIQ0tyG3Ij0KeSes3OTD/6eirx2K7qrTya805e7E WdsJ/B+MnK5VC4J7o7Ve971AunZ8uXllhynrOi/4= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Shunsuke Mie , Vinod Koul , Sasha Levin Subject: [PATCH 6.1 542/611] dmaengine: dw-edma: Fix to enable to issue dma request on DMA processing Date: Mon, 8 May 2023 11:46:24 +0200 Message-Id: <20230508094439.613740905@linuxfoundation.org> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20230508094421.513073170@linuxfoundation.org> References: <20230508094421.513073170@linuxfoundation.org> User-Agent: quilt/0.67 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Shunsuke Mie [ Upstream commit 970b17dfe264a9085ba4e593730ecfd496b950ab ] The issue_pending request is ignored while driver is processing a DMA request. Fix to issue the pending requests on any dma channel status. Fixes: e63d79d1ffcd ("dmaengine: Add Synopsys eDMA IP core driver") Signed-off-by: Shunsuke Mie Link: https://lore.kernel.org/r/20230411101758.438472-2-mie@igel.co.jp Signed-off-by: Vinod Koul Signed-off-by: Sasha Levin --- drivers/dma/dw-edma/dw-edma-core.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/drivers/dma/dw-edma/dw-edma-core.c b/drivers/dma/dw-edma/dw-edma-core.c index cb46cbef212ab..ef4cdcf6beba0 100644 --- a/drivers/dma/dw-edma/dw-edma-core.c +++ b/drivers/dma/dw-edma/dw-edma-core.c @@ -279,9 +279,12 @@ static void dw_edma_device_issue_pending(struct dma_chan *dchan) struct dw_edma_chan *chan = dchan2dw_edma_chan(dchan); unsigned long flags; + if (!chan->configured) + return; + spin_lock_irqsave(&chan->vc.lock, flags); - if (chan->configured && chan->request == EDMA_REQ_NONE && - chan->status == EDMA_ST_IDLE && vchan_issue_pending(&chan->vc)) { + if (vchan_issue_pending(&chan->vc) && chan->request == EDMA_REQ_NONE && + chan->status == EDMA_ST_IDLE) { chan->status = EDMA_ST_BUSY; dw_edma_start_transfer(chan); } -- 2.39.2