From patchwork Wed Aug 26 16:18:18 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Krzysztof Kozlowski X-Patchwork-Id: 11739113 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 468EB109B for ; Wed, 26 Aug 2020 16:18:39 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 2ADC72078A for ; Wed, 26 Aug 2020 16:18:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1598458719; bh=z/gMSrhrlthCIKy05F3/R3L5fxE1/4VfxAOow5kwnNQ=; h=From:To:Subject:Date:List-ID:From; b=Gmo2Y4lunpfwfNRhUCmPrRxuVEa5gd2B63gINEvGd0iBXKlQOnsk339AcE47SEgDA oeqPu+5YDgT1vVyrw6vVpZ2WGlvTj9um08ozQY55Iw7hfMyF+TJIvv4l50L2PrKbg5 x008q8+0JomLoo1aFJXrNkLcTbMFdx3SE/lpHykI= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726995AbgHZQSi (ORCPT ); Wed, 26 Aug 2020 12:18:38 -0400 Received: from mail.kernel.org ([198.145.29.99]:48618 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726820AbgHZQS2 (ORCPT ); Wed, 26 Aug 2020 12:18:28 -0400 Received: from localhost.localdomain (unknown [194.230.155.216]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 80D86206FA; Wed, 26 Aug 2020 16:18:24 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1598458707; bh=z/gMSrhrlthCIKy05F3/R3L5fxE1/4VfxAOow5kwnNQ=; h=From:To:Subject:Date:From; b=EAS8Tk+Y6Jl0bTZLbEOWe0H06FBa5Oi6mgbqW7y2/4wC0gg8ZnIl4r1Lkety/uDAI vCo74Kj4syR06aSBHqyi5jMj72ZLOwz4ZUfI0/p0naRMPRSPrgRUW2D8NlyrsE/WFg +QXlBjr0eNdVrGQ9qvvVVd2DAdq0Vths48V3xq8c= From: Krzysztof Kozlowski To: Jonathan Cameron , Hartmut Knaack , Lars-Peter Clausen , Peter Meerwald-Stadler , Maxime Coquelin , Alexandre Torgue , Fabrice Gasnier , Etienne Carriere , Krzysztof Kozlowski , Alexandru Ardelean , linux-iio@vger.kernel.org, linux-stm32@st-md-mailman.stormreply.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH v2] iio: adc: stm32: Simplify with dev_err_probe() Date: Wed, 26 Aug 2020 18:18:18 +0200 Message-Id: <20200826161818.20969-1-krzk@kernel.org> X-Mailer: git-send-email 2.17.1 Sender: linux-iio-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-iio@vger.kernel.org Common pattern of handling deferred probe can be simplified with dev_err_probe(). Less code and also it prints the error value. Signed-off-by: Krzysztof Kozlowski --- Changes since v1: 1. Update also stm32-dfsdm-core and stm32-dac-core. 2. Wrap around 100 characters (accepted by checkpatch). --- drivers/iio/adc/stm32-adc-core.c | 57 ++++++++++-------------------- drivers/iio/adc/stm32-adc.c | 9 ++--- drivers/iio/adc/stm32-dfsdm-adc.c | 9 ++--- drivers/iio/adc/stm32-dfsdm-core.c | 8 ++--- drivers/iio/dac/stm32-dac-core.c | 5 +-- 5 files changed, 26 insertions(+), 62 deletions(-) diff --git a/drivers/iio/adc/stm32-adc-core.c b/drivers/iio/adc/stm32-adc-core.c index 0e2068ec068b..d7bd4e28966c 100644 --- a/drivers/iio/adc/stm32-adc-core.c +++ b/drivers/iio/adc/stm32-adc-core.c @@ -582,11 +582,9 @@ static int stm32_adc_core_switches_probe(struct device *dev, priv->syscfg = syscon_regmap_lookup_by_phandle(np, "st,syscfg"); if (IS_ERR(priv->syscfg)) { ret = PTR_ERR(priv->syscfg); - if (ret != -ENODEV) { - if (ret != -EPROBE_DEFER) - dev_err(dev, "Can't probe syscfg: %d\n", ret); - return ret; - } + if (ret != -ENODEV) + return dev_err_probe(dev, ret, "Can't probe syscfg\n"); + priv->syscfg = NULL; } @@ -596,12 +594,9 @@ static int stm32_adc_core_switches_probe(struct device *dev, priv->booster = devm_regulator_get_optional(dev, "booster"); if (IS_ERR(priv->booster)) { ret = PTR_ERR(priv->booster); - if (ret != -ENODEV) { - if (ret != -EPROBE_DEFER) - dev_err(dev, "can't get booster %d\n", - ret); - return ret; - } + if (ret != -ENODEV) + dev_err_probe(dev, ret, "can't get booster\n"); + priv->booster = NULL; } } @@ -612,11 +607,9 @@ static int stm32_adc_core_switches_probe(struct device *dev, priv->vdd = devm_regulator_get_optional(dev, "vdd"); if (IS_ERR(priv->vdd)) { ret = PTR_ERR(priv->vdd); - if (ret != -ENODEV) { - if (ret != -EPROBE_DEFER) - dev_err(dev, "can't get vdd %d\n", ret); - return ret; - } + if (ret != -ENODEV) + return dev_err_probe(dev, ret, "can't get vdd\n"); + priv->vdd = NULL; } } @@ -669,40 +662,28 @@ static int stm32_adc_probe(struct platform_device *pdev) priv->common.phys_base = res->start; priv->vdda = devm_regulator_get(&pdev->dev, "vdda"); - if (IS_ERR(priv->vdda)) { - ret = PTR_ERR(priv->vdda); - if (ret != -EPROBE_DEFER) - dev_err(&pdev->dev, "vdda get failed, %d\n", ret); - return ret; - } + if (IS_ERR(priv->vdda)) + return dev_err_probe(&pdev->dev, PTR_ERR(priv->vdda), "vdda get failed\n"); priv->vref = devm_regulator_get(&pdev->dev, "vref"); - if (IS_ERR(priv->vref)) { - ret = PTR_ERR(priv->vref); - if (ret != -EPROBE_DEFER) - dev_err(&pdev->dev, "vref get failed, %d\n", ret); - return ret; - } + if (IS_ERR(priv->vref)) + return dev_err_probe(&pdev->dev, PTR_ERR(priv->vref), "vref get failed\n"); priv->aclk = devm_clk_get(&pdev->dev, "adc"); if (IS_ERR(priv->aclk)) { ret = PTR_ERR(priv->aclk); - if (ret != -ENOENT) { - if (ret != -EPROBE_DEFER) - dev_err(&pdev->dev, "Can't get 'adc' clock\n"); - return ret; - } + if (ret != -ENOENT) + return dev_err_probe(&pdev->dev, ret, "Can't get 'adc' clock\n"); + priv->aclk = NULL; } priv->bclk = devm_clk_get(&pdev->dev, "bus"); if (IS_ERR(priv->bclk)) { ret = PTR_ERR(priv->bclk); - if (ret != -ENOENT) { - if (ret != -EPROBE_DEFER) - dev_err(&pdev->dev, "Can't get 'bus' clock\n"); - return ret; - } + if (ret != -ENOENT) + return dev_err_probe(&pdev->dev, ret, "Can't get 'bus' clock\n"); + priv->bclk = NULL; } diff --git a/drivers/iio/adc/stm32-adc.c b/drivers/iio/adc/stm32-adc.c index 3eb9ebe8372f..b8e764ca54a6 100644 --- a/drivers/iio/adc/stm32-adc.c +++ b/drivers/iio/adc/stm32-adc.c @@ -1805,13 +1805,8 @@ static int stm32_adc_dma_request(struct device *dev, struct iio_dev *indio_dev) adc->dma_chan = dma_request_chan(dev, "rx"); if (IS_ERR(adc->dma_chan)) { ret = PTR_ERR(adc->dma_chan); - if (ret != -ENODEV) { - if (ret != -EPROBE_DEFER) - dev_err(dev, - "DMA channel request failed with %d\n", - ret); - return ret; - } + if (ret != -ENODEV) + return dev_err_probe(dev, ret, "DMA channel request failed with\n"); /* DMA is optional: fall back to IRQ mode */ adc->dma_chan = NULL; diff --git a/drivers/iio/adc/stm32-dfsdm-adc.c b/drivers/iio/adc/stm32-dfsdm-adc.c index 5e10fb4f3704..12c951078c1f 100644 --- a/drivers/iio/adc/stm32-dfsdm-adc.c +++ b/drivers/iio/adc/stm32-dfsdm-adc.c @@ -1473,13 +1473,8 @@ static int stm32_dfsdm_adc_init(struct device *dev, struct iio_dev *indio_dev) /* Optionally request DMA */ ret = stm32_dfsdm_dma_request(dev, indio_dev); if (ret) { - if (ret != -ENODEV) { - if (ret != -EPROBE_DEFER) - dev_err(dev, - "DMA channel request failed with %d\n", - ret); - return ret; - } + if (ret != -ENODEV) + return dev_err_probe(dev, ret, "DMA channel request failed with\n"); dev_dbg(dev, "No DMA support\n"); return 0; diff --git a/drivers/iio/adc/stm32-dfsdm-core.c b/drivers/iio/adc/stm32-dfsdm-core.c index 26e2011c5868..34e4e6e59acf 100644 --- a/drivers/iio/adc/stm32-dfsdm-core.c +++ b/drivers/iio/adc/stm32-dfsdm-core.c @@ -243,12 +243,8 @@ static int stm32_dfsdm_parse_of(struct platform_device *pdev, * on use case. */ priv->clk = devm_clk_get(&pdev->dev, "dfsdm"); - if (IS_ERR(priv->clk)) { - ret = PTR_ERR(priv->clk); - if (ret != -EPROBE_DEFER) - dev_err(&pdev->dev, "Failed to get clock (%d)\n", ret); - return ret; - } + if (IS_ERR(priv->clk)) + return dev_err_probe(&pdev->dev, PTR_ERR(priv->clk), "Failed to get clock\n"); priv->aclk = devm_clk_get(&pdev->dev, "audio"); if (IS_ERR(priv->aclk)) diff --git a/drivers/iio/dac/stm32-dac-core.c b/drivers/iio/dac/stm32-dac-core.c index 7e5809ba0dee..906436780347 100644 --- a/drivers/iio/dac/stm32-dac-core.c +++ b/drivers/iio/dac/stm32-dac-core.c @@ -150,10 +150,7 @@ static int stm32_dac_probe(struct platform_device *pdev) rst = devm_reset_control_get_optional_exclusive(dev, NULL); if (rst) { if (IS_ERR(rst)) { - ret = PTR_ERR(rst); - if (ret != -EPROBE_DEFER) - dev_err(dev, "reset get failed, %d\n", ret); - + ret = dev_err_probe(dev, PTR_ERR(rst), "reset get failed\n"); goto err_hw_stop; }