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 X-Spam-Level: X-Spam-Status: No, score=-8.3 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3F898C43331 for ; Mon, 30 Mar 2020 08:41:19 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 13FFB2073B for ; Mon, 30 Mar 2020 08:41:17 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=st.com header.i=@st.com header.b="HMuaE34H" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729747AbgC3IlQ (ORCPT ); Mon, 30 Mar 2020 04:41:16 -0400 Received: from mx07-00178001.pphosted.com ([62.209.51.94]:4998 "EHLO mx07-00178001.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729398AbgC3IlN (ORCPT ); Mon, 30 Mar 2020 04:41:13 -0400 Received: from pps.filterd (m0046037.ppops.net [127.0.0.1]) by mx07-00178001.pphosted.com (8.16.0.42/8.16.0.42) with SMTP id 02U8bjN7025218; Mon, 30 Mar 2020 10:41:02 +0200 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=st.com; h=subject : to : cc : references : from : message-id : date : mime-version : in-reply-to : content-type : content-transfer-encoding; s=STMicroelectronics; bh=2zJH41YQKvQIOnb4qX0JkkMFfwGeAK8KHzh+mK7/f0U=; b=HMuaE34HokD0cr+FPEqvwDu8BBhtwbDRYaBYcLO5T9g9jIAk+OHAX2m52L47n5QEC7TY QgVg3IkfDlBvK6I2/feLWrmkJhwYrVxZ5nsdqHdORZFCFYEvqeV2ghPrcpLx/6Cph6Ym I4/nOQZsofSmp20oPUiFA3VOOW8JEj/lcG6huI+CAB0x3VtZU8SQgrr+Brm8EnUmmvlB sphMqQmuIUunO1+z2ihArln8k+7PavLjZqKQtuYBUsWWmsLyCDhAb7MFXYGgWvXdB7fV UNc4NW2MB1c5UhxreFsbYnAnAaoYQtx68XjqkMk4KLjbF+jmBJ8HEE8nXp5JMx0JnXYr Ng== Received: from beta.dmz-eu.st.com (beta.dmz-eu.st.com [164.129.1.35]) by mx07-00178001.pphosted.com with ESMTP id 301w80rfr2-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 30 Mar 2020 10:41:02 +0200 Received: from euls16034.sgp.st.com (euls16034.sgp.st.com [10.75.44.20]) by beta.dmz-eu.st.com (STMicroelectronics) with ESMTP id F315210002A; Mon, 30 Mar 2020 10:41:01 +0200 (CEST) Received: from Webmail-eu.st.com (sfhdag5node2.st.com [10.75.127.14]) by euls16034.sgp.st.com (STMicroelectronics) with ESMTP id BAEB02A5528; Mon, 30 Mar 2020 10:41:01 +0200 (CEST) Received: from [10.131.224.211] (10.75.127.47) by SFHDAG5NODE2.st.com (10.75.127.14) with Microsoft SMTP Server (TLS) id 15.0.1473.3; Mon, 30 Mar 2020 10:41:00 +0200 Subject: Re: [PATCH] i2c: stm32: don't print an error on probe deferral To: Alain Volmat , CC: , , , , , References: <1584642136-15418-1-git-send-email-alain.volmat@st.com> From: Pierre Yves MORDRET Message-ID: <9f51c667-cb26-a087-b2a3-2cf2ddf09a87@st.com> Date: Mon, 30 Mar 2020 10:40:59 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.9.0 MIME-Version: 1.0 In-Reply-To: <1584642136-15418-1-git-send-email-alain.volmat@st.com> Content-Type: text/plain; charset="utf-8" Content-Language: en-US Content-Transfer-Encoding: 7bit X-Originating-IP: [10.75.127.47] X-ClientProxiedBy: SFHDAG4NODE2.st.com (10.75.127.11) To SFHDAG5NODE2.st.com (10.75.127.14) X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.138,18.0.645 definitions=2020-03-30_01:2020-03-27,2020-03-30 signatures=0 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello ! Reviewed-by: Pierre-Yves MORDRET Thanks On 3/19/20 7:22 PM, Alain Volmat wrote: > From: Etienne Carriere > > Do not print an error trace when deferring probe for some resource. > > Signed-off-by: Etienne Carriere > Signed-off-by: Alain Volmat > --- > drivers/i2c/busses/i2c-stm32.c | 10 +++++++--- > drivers/i2c/busses/i2c-stm32f4.c | 4 +++- > drivers/i2c/busses/i2c-stm32f7.c | 7 +++++-- > 3 files changed, 15 insertions(+), 6 deletions(-) > > diff --git a/drivers/i2c/busses/i2c-stm32.c b/drivers/i2c/busses/i2c-stm32.c > index 1da347e6a358..7be559858402 100644 > --- a/drivers/i2c/busses/i2c-stm32.c > +++ b/drivers/i2c/busses/i2c-stm32.c > @@ -25,8 +25,9 @@ struct stm32_i2c_dma *stm32_i2c_dma_request(struct device *dev, > /* Request and configure I2C TX dma channel */ > dma->chan_tx = dma_request_chan(dev, "tx"); > if (IS_ERR(dma->chan_tx)) { > - dev_dbg(dev, "can't request DMA tx channel\n"); > ret = PTR_ERR(dma->chan_tx); > + if (ret != -EPROBE_DEFER) > + dev_dbg(dev, "can't request DMA tx channel\n"); > goto fail_al; > } > > @@ -44,8 +45,10 @@ struct stm32_i2c_dma *stm32_i2c_dma_request(struct device *dev, > /* Request and configure I2C RX dma channel */ > dma->chan_rx = dma_request_chan(dev, "rx"); > if (IS_ERR(dma->chan_rx)) { > - dev_err(dev, "can't request DMA rx channel\n"); > ret = PTR_ERR(dma->chan_rx); > + if (ret != -EPROBE_DEFER) > + dev_err(dev, "can't request DMA rx channel\n"); > + > goto fail_tx; > } > > @@ -73,7 +76,8 @@ struct stm32_i2c_dma *stm32_i2c_dma_request(struct device *dev, > dma_release_channel(dma->chan_tx); > fail_al: > devm_kfree(dev, dma); > - dev_info(dev, "can't use DMA\n"); > + if (ret != -EPROBE_DEFER) > + dev_info(dev, "can't use DMA\n"); > > return ERR_PTR(ret); > } > diff --git a/drivers/i2c/busses/i2c-stm32f4.c b/drivers/i2c/busses/i2c-stm32f4.c > index ba600d77a3f8..1b8cad506ad7 100644 > --- a/drivers/i2c/busses/i2c-stm32f4.c > +++ b/drivers/i2c/busses/i2c-stm32f4.c > @@ -797,8 +797,10 @@ static int stm32f4_i2c_probe(struct platform_device *pdev) > > rst = devm_reset_control_get_exclusive(&pdev->dev, NULL); > if (IS_ERR(rst)) { > - dev_err(&pdev->dev, "Error: Missing controller reset\n"); > ret = PTR_ERR(rst); > + if (ret != -EPROBE_DEFER) > + dev_err(&pdev->dev, "Error: Missing reset ctrl\n"); > + > goto clk_free; > } > reset_control_assert(rst); > diff --git a/drivers/i2c/busses/i2c-stm32f7.c b/drivers/i2c/busses/i2c-stm32f7.c > index 78d40a4cc282..ab95ed52a7dc 100644 > --- a/drivers/i2c/busses/i2c-stm32f7.c > +++ b/drivers/i2c/busses/i2c-stm32f7.c > @@ -1915,7 +1915,8 @@ static int stm32f7_i2c_probe(struct platform_device *pdev) > > i2c_dev->clk = devm_clk_get(&pdev->dev, NULL); > if (IS_ERR(i2c_dev->clk)) { > - dev_err(&pdev->dev, "Error: Missing controller clock\n"); > + if (PTR_ERR(i2c_dev->clk) != -EPROBE_DEFER) > + dev_err(&pdev->dev, "Failed to get controller clock\n"); > return PTR_ERR(i2c_dev->clk); > } > > @@ -1941,8 +1942,10 @@ static int stm32f7_i2c_probe(struct platform_device *pdev) > > rst = devm_reset_control_get(&pdev->dev, NULL); > if (IS_ERR(rst)) { > - dev_err(&pdev->dev, "Error: Missing controller reset\n"); > ret = PTR_ERR(rst); > + if (ret != -EPROBE_DEFER) > + dev_err(&pdev->dev, "Error: Missing reset ctrl\n"); > + > goto clk_free; > } > reset_control_assert(rst); >