From patchwork Mon Nov 6 15:18:53 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Olivier MOYSAN X-Patchwork-Id: 10043689 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 8E5D860247 for ; Mon, 6 Nov 2017 15:19:50 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 6202520602 for ; Mon, 6 Nov 2017 15:19:50 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 564B7296B4; Mon, 6 Nov 2017 15:19:50 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-1.9 required=2.0 tests=BAYES_00, RCVD_IN_DNSWL_NONE autolearn=ham version=3.3.1 Received: from alsa0.perex.cz (alsa0.perex.cz [77.48.224.243]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 87E5620602 for ; Mon, 6 Nov 2017 15:19:49 +0000 (UTC) Received: from alsa0.perex.cz (localhost [127.0.0.1]) by alsa0.perex.cz (Postfix) with ESMTP id E30D826721E; Mon, 6 Nov 2017 16:19:08 +0100 (CET) X-Original-To: alsa-devel@alsa-project.org Delivered-To: alsa-devel@alsa-project.org Received: by alsa0.perex.cz (Postfix, from userid 1000) id BB96626720C; Mon, 6 Nov 2017 16:19:06 +0100 (CET) Received: from mx07-00178001.pphosted.com (mx08-00178001.pphosted.com [91.207.212.93]) by alsa0.perex.cz (Postfix) with ESMTP id 7150A26720D for ; Mon, 6 Nov 2017 16:19:02 +0100 (CET) Received: from pps.filterd (m0046661.ppops.net [127.0.0.1]) by mx08-.pphosted.com (8.16.0.21/8.16.0.21) with SMTP id vA6FE8qU015726; Mon, 6 Nov 2017 16:19:02 +0100 Received: from beta.dmz-eu.st.com (beta.dmz-eu.st.com [164.129.1.35]) by mx08-00178001.pphosted.com with ESMTP id 2e15ahk6ym-1 (version=TLSv1 cipher=ECDHE-RSA-AES256-SHA bits=256 verify=NOT); Mon, 06 Nov 2017 16:19:02 +0100 Received: from zeta.dmz-eu.st.com (zeta.dmz-eu.st.com [164.129.230.9]) by beta.dmz-eu.st.com (STMicroelectronics) with ESMTP id 8DBDC3A; Mon, 6 Nov 2017 15:19:01 +0000 (GMT) Received: from Webmail-eu.st.com (Safex1hubcas21.st.com [10.75.90.44]) by zeta.dmz-eu.st.com (STMicroelectronics) with ESMTP id 6FA6C166D; Mon, 6 Nov 2017 15:19:01 +0000 (GMT) Received: from SAFEX1HUBCAS24.st.com (10.75.90.95) by SAFEX1HUBCAS21.st.com (10.75.90.44) with Microsoft SMTP Server (TLS) id 14.3.352.0; Mon, 6 Nov 2017 16:19:01 +0100 Received: from localhost (10.201.23.16) by webmail-ga.st.com (10.75.90.48) with Microsoft SMTP Server (TLS) id 14.3.352.0; Mon, 6 Nov 2017 16:19:00 +0100 From: Olivier Moysan To: , , , , , , , , , , , , , Date: Mon, 6 Nov 2017 16:18:53 +0100 Message-ID: <1509981533-28622-3-git-send-email-olivier.moysan@st.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1509981533-28622-1-git-send-email-olivier.moysan@st.com> References: <1509981533-28622-1-git-send-email-olivier.moysan@st.com> MIME-Version: 1.0 X-Originating-IP: [10.201.23.16] X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:, , definitions=2017-11-06_05:, , signatures=0 Cc: arnaud.pouliquen@st.com, benjamin.gaignard@st.com Subject: [alsa-devel] [PATCH 2/2] ASoC: stm32: spdifrx: fix control DMA error management X-BeenThere: alsa-devel@alsa-project.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: alsa-devel-bounces@alsa-project.org Sender: alsa-devel-bounces@alsa-project.org X-Virus-Scanned: ClamAV using ClamSMTP Fix DMA channel request error handling. Signed-off-by: Olivier Moysan --- sound/soc/stm/stm32_spdifrx.c | 15 +++++++-------- 1 file changed, 7 insertions(+), 8 deletions(-) diff --git a/sound/soc/stm/stm32_spdifrx.c b/sound/soc/stm/stm32_spdifrx.c index d7dbe84..b9bdefc 100644 --- a/sound/soc/stm/stm32_spdifrx.c +++ b/sound/soc/stm/stm32_spdifrx.c @@ -392,6 +392,12 @@ static int stm32_spdifrx_dma_ctrl_register(struct device *dev, { int ret; + spdifrx->ctrl_chan = dma_request_chan(dev, "rx-ctrl"); + if (IS_ERR(spdifrx->ctrl_chan)) { + dev_err(dev, "dma_request_slave_channel failed\n"); + return PTR_ERR(spdifrx->ctrl_chan); + } + spdifrx->dmab = devm_kzalloc(dev, sizeof(struct snd_dma_buffer), GFP_KERNEL); if (!spdifrx->dmab) @@ -406,12 +412,6 @@ static int stm32_spdifrx_dma_ctrl_register(struct device *dev, return ret; } - spdifrx->ctrl_chan = dma_request_chan(dev, "rx-ctrl"); - if (!spdifrx->ctrl_chan) { - dev_err(dev, "dma_request_slave_channel failed\n"); - return -EINVAL; - } - spdifrx->slave_config.direction = DMA_DEV_TO_MEM; spdifrx->slave_config.src_addr = (dma_addr_t)(spdifrx->phys_addr + STM32_SPDIFRX_CSR); @@ -423,7 +423,6 @@ static int stm32_spdifrx_dma_ctrl_register(struct device *dev, &spdifrx->slave_config); if (ret < 0) { dev_err(dev, "dmaengine_slave_config returned error %d\n", ret); - dma_release_channel(spdifrx->ctrl_chan); spdifrx->ctrl_chan = NULL; } @@ -962,7 +961,7 @@ static int stm32_spdifrx_probe(struct platform_device *pdev) return 0; error: - if (spdifrx->ctrl_chan) + if (!IS_ERR(spdifrx->ctrl_chan)) dma_release_channel(spdifrx->ctrl_chan); if (spdifrx->dmab) snd_dma_free_pages(spdifrx->dmab);