From patchwork Tue Aug 25 12:48:29 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alexandru Ardelean X-Patchwork-Id: 11735697 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 2625F16B1 for ; Tue, 25 Aug 2020 12:50:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0CD35207D3 for ; Tue, 25 Aug 2020 12:50:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727923AbgHYMtw (ORCPT ); Tue, 25 Aug 2020 08:49:52 -0400 Received: from mx0a-00128a01.pphosted.com ([148.163.135.77]:17934 "EHLO mx0a-00128a01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728946AbgHYMsY (ORCPT ); Tue, 25 Aug 2020 08:48:24 -0400 Received: from pps.filterd (m0167088.ppops.net [127.0.0.1]) by mx0a-00128a01.pphosted.com (8.16.0.42/8.16.0.42) with SMTP id 07PCe9iN017665; Tue, 25 Aug 2020 08:48:10 -0400 Received: from nwd2mta4.analog.com ([137.71.173.58]) by mx0a-00128a01.pphosted.com with ESMTP id 332w761k6g-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 25 Aug 2020 08:48:10 -0400 Received: from SCSQMBX10.ad.analog.com (scsqmbx10.ad.analog.com [10.77.17.5]) by nwd2mta4.analog.com (8.14.7/8.14.7) with ESMTP id 07PCm82W017030 (version=TLSv1/SSLv3 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128 verify=FAIL); Tue, 25 Aug 2020 08:48:08 -0400 Received: from SCSQMBX10.ad.analog.com (10.77.17.5) by SCSQMBX10.ad.analog.com (10.77.17.5) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.1779.2; Tue, 25 Aug 2020 05:48:07 -0700 Received: from zeus.spd.analog.com (10.66.68.11) by SCSQMBX10.ad.analog.com (10.77.17.5) with Microsoft SMTP Server id 15.1.1779.2 via Frontend Transport; Tue, 25 Aug 2020 05:48:06 -0700 Received: from localhost.localdomain ([10.48.65.12]) by zeus.spd.analog.com (8.15.1/8.15.1) with ESMTP id 07PCm0jJ001781; Tue, 25 Aug 2020 08:48:04 -0400 From: Alexandru Ardelean To: , CC: , , , , Alexandru Ardelean Subject: [PATCH v2 2/6] dmaengine: axi-dmac: move active_descs list init after device-tree init Date: Tue, 25 Aug 2020 15:48:29 +0300 Message-ID: <20200825124840.43664-3-alexandru.ardelean@analog.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200825124840.43664-1-alexandru.ardelean@analog.com> References: <20200825124840.43664-1-alexandru.ardelean@analog.com> MIME-Version: 1.0 X-ADIRoutedOnPrem: True X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.235,18.0.687 definitions=2020-08-25_04:2020-08-25,2020-08-25 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 suspectscore=8 mlxlogscore=929 spamscore=0 lowpriorityscore=0 phishscore=0 mlxscore=0 malwarescore=0 priorityscore=1501 bulkscore=0 clxscore=1015 impostorscore=0 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2006250000 definitions=main-2008250096 Sender: dmaengine-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: dmaengine@vger.kernel.org We want to enable the clock right after it is obtained. Then later we'll want to read the core version via register-access (which requires the clock to be enabled). The initialization of the active_descs list can be postponed after reading from registers (or reading the device-tree). Signed-off-by: Alexandru Ardelean --- drivers/dma/dma-axi-dmac.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/dma/dma-axi-dmac.c b/drivers/dma/dma-axi-dmac.c index 088c79137398..90a99bdffa2b 100644 --- a/drivers/dma/dma-axi-dmac.c +++ b/drivers/dma/dma-axi-dmac.c @@ -850,8 +850,6 @@ static int axi_dmac_probe(struct platform_device *pdev) if (IS_ERR(dmac->clk)) return PTR_ERR(dmac->clk); - INIT_LIST_HEAD(&dmac->chan.active_descs); - of_channels = of_get_child_by_name(pdev->dev.of_node, "adi,channels"); if (of_channels == NULL) return -ENODEV; @@ -866,6 +864,8 @@ static int axi_dmac_probe(struct platform_device *pdev) } of_node_put(of_channels); + INIT_LIST_HEAD(&dmac->chan.active_descs); + pdev->dev.dma_parms = &dmac->dma_parms; dma_set_max_seg_size(&pdev->dev, UINT_MAX);