From patchwork Sat Mar 18 16:30:39 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Jonathan Cameron X-Patchwork-Id: 13179918 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 A3170C61DA4 for ; Sat, 18 Mar 2023 16:15:54 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229502AbjCRQPx (ORCPT ); Sat, 18 Mar 2023 12:15:53 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41024 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229888AbjCRQPw (ORCPT ); Sat, 18 Mar 2023 12:15:52 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E45A42D175 for ; Sat, 18 Mar 2023 09:15:50 -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 5B3CB60EC9 for ; Sat, 18 Mar 2023 16:15:50 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id E19AFC433EF; Sat, 18 Mar 2023 16:15:48 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1679156149; bh=DZNVe7U1+EpIpS+aGcyiw0CjbwrDOauszNFx3YY3Cko=; h=From:To:Cc:Subject:Date:From; b=cS56kIYIaObhm8gsKmCZmLKZcI7iGLmexcQo4t6ktyfm7Ossb3yLv9HXbKmbd0dhW cuppXCywZ4nCJzY2uuHQdoegVbp4dwwFioyw5wmVoeM/4soaJIKdrwYsp8WRUry2Bi wUaZG+E78M+tix+Dh5f6S54xuInuUK+nYRekLOss4RkEaVZM3XQIiFLQSoth0TeL9K KxF4t2tRP2B2m7AcIQQ1CrvdyfyCRY1EJsaq4HXXO/4pYGUkgKgibpFdiCDfnkkPq3 3Tee7J8rUmGLZLZ0FlBzDpQ4Ma+FwC86+5j5x9wnrS1LaenuvDCpttThG3zNqx8W10 bKidYdmC3R7HQ== From: Jonathan Cameron To: linux-iio@vger.kernel.org Cc: Jonathan Cameron , =?utf-8?q?Signed-off-by_?= =?utf-8?q?=3A_Patrik_Dahlstr=C3=B6m?= Subject: [PATCH] iio: adc: palmas: Take probe fully device managed. Date: Sat, 18 Mar 2023 16:30:39 +0000 Message-Id: <20230318163039.56115-1-jic23@kernel.org> X-Mailer: git-send-email 2.40.0 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-iio@vger.kernel.org From: Jonathan Cameron Review of a recent fix highlighted that this driver could be trivially converted to be entirely devm managed. That fix should be applied to resolve the fix in a fashion easy to back port even though this change removes the relevant code. [1] https://patchwork.kernel.org/project/linux-iio/patch/20230313205029.1881745-1-risca@dalakolonin.se/ Signed-off-by: Jonathan Cameron Cc: Signed-off-by: Patrik Dahlström --- drivers/iio/adc/palmas_gpadc.c | 110 +++++++++++++-------------------- 1 file changed, 42 insertions(+), 68 deletions(-) diff --git a/drivers/iio/adc/palmas_gpadc.c b/drivers/iio/adc/palmas_gpadc.c index 849a697a467e..2921186458e0 100644 --- a/drivers/iio/adc/palmas_gpadc.c +++ b/drivers/iio/adc/palmas_gpadc.c @@ -493,6 +493,11 @@ static int palmas_gpadc_get_adc_dt_data(struct platform_device *pdev, return 0; } +static void palmas_disable_wakeup(void *dev) +{ + device_wakeup_disable(dev); +} + static int palmas_gpadc_probe(struct platform_device *pdev) { struct palmas_gpadc *adc; @@ -532,36 +537,30 @@ static int palmas_gpadc_probe(struct platform_device *pdev) adc->auto_conversion_period = gpadc_pdata->auto_conversion_period_ms; adc->irq = palmas_irq_get_virq(adc->palmas, PALMAS_GPADC_EOC_SW_IRQ); - if (adc->irq < 0) { - dev_err(adc->dev, - "get virq failed: %d\n", adc->irq); - ret = adc->irq; - goto out; - } - ret = request_threaded_irq(adc->irq, NULL, - palmas_gpadc_irq, - IRQF_ONESHOT, dev_name(adc->dev), - adc); - if (ret < 0) { - dev_err(adc->dev, - "request irq %d failed: %d\n", adc->irq, ret); - goto out; - } + if (adc->irq < 0) + return dev_err_probe(adc->dev, adc->irq, "get virq failed\n"); + + ret = devm_request_threaded_irq(&pdev->dev, adc->irq, NULL, + palmas_gpadc_irq, + IRQF_ONESHOT, dev_name(adc->dev), + adc); + if (ret < 0) + return dev_err_probe(adc->dev, ret, + "request irq %d failed\n", adc->irq); if (gpadc_pdata->adc_wakeup1_data) { memcpy(&adc->wakeup1_data, gpadc_pdata->adc_wakeup1_data, sizeof(adc->wakeup1_data)); adc->wakeup1_enable = true; adc->irq_auto_0 = platform_get_irq(pdev, 1); - ret = request_threaded_irq(adc->irq_auto_0, NULL, - palmas_gpadc_irq_auto, - IRQF_ONESHOT, - "palmas-adc-auto-0", adc); - if (ret < 0) { - dev_err(adc->dev, "request auto0 irq %d failed: %d\n", - adc->irq_auto_0, ret); - goto out_irq_free; - } + ret = devm_request_threaded_irq(&pdev->dev, adc->irq_auto_0, + NULL, palmas_gpadc_irq_auto, + IRQF_ONESHOT, + "palmas-adc-auto-0", adc); + if (ret < 0) + return dev_err_probe(adc->dev, ret, + "request auto0 irq %d failed\n", + adc->irq_auto_0); } if (gpadc_pdata->adc_wakeup2_data) { @@ -569,15 +568,14 @@ static int palmas_gpadc_probe(struct platform_device *pdev) sizeof(adc->wakeup2_data)); adc->wakeup2_enable = true; adc->irq_auto_1 = platform_get_irq(pdev, 2); - ret = request_threaded_irq(adc->irq_auto_1, NULL, - palmas_gpadc_irq_auto, - IRQF_ONESHOT, - "palmas-adc-auto-1", adc); - if (ret < 0) { - dev_err(adc->dev, "request auto1 irq %d failed: %d\n", - adc->irq_auto_1, ret); - goto out_irq_auto0_free; - } + ret = devm_request_threaded_irq(&pdev->dev, adc->irq_auto_1, + NULL, palmas_gpadc_irq_auto, + IRQF_ONESHOT, + "palmas-adc-auto-1", adc); + if (ret < 0) + return dev_err_probe(adc->dev, ret, + "request auto1 irq %d failed\n", + adc->irq_auto_1); } /* set the current source 0 (value 0/5/15/20 uA => 0..3) */ @@ -608,11 +606,10 @@ static int palmas_gpadc_probe(struct platform_device *pdev) indio_dev->channels = palmas_gpadc_iio_channel; indio_dev->num_channels = ARRAY_SIZE(palmas_gpadc_iio_channel); - ret = iio_device_register(indio_dev); - if (ret < 0) { - dev_err(adc->dev, "iio_device_register() failed: %d\n", ret); - goto out_irq_auto1_free; - } + ret = devm_iio_device_register(&pdev->dev, indio_dev); + if (ret < 0) + return dev_err_probe(adc->dev, ret, + "iio_device_register() failed\n"); device_set_wakeup_capable(&pdev->dev, 1); for (i = 0; i < PALMAS_ADC_CH_MAX; i++) { @@ -620,36 +617,14 @@ static int palmas_gpadc_probe(struct platform_device *pdev) palmas_gpadc_calibrate(adc, i); } - if (adc->wakeup1_enable || adc->wakeup2_enable) + if (adc->wakeup1_enable || adc->wakeup2_enable) { device_wakeup_enable(&pdev->dev); - - return 0; - -out_irq_auto1_free: - if (gpadc_pdata->adc_wakeup2_data) - free_irq(adc->irq_auto_1, adc); -out_irq_auto0_free: - if (gpadc_pdata->adc_wakeup1_data) - free_irq(adc->irq_auto_0, adc); -out_irq_free: - free_irq(adc->irq, adc); -out: - return ret; -} - -static int palmas_gpadc_remove(struct platform_device *pdev) -{ - struct iio_dev *indio_dev = dev_get_drvdata(&pdev->dev); - struct palmas_gpadc *adc = iio_priv(indio_dev); - - if (adc->wakeup1_enable || adc->wakeup2_enable) - device_wakeup_disable(&pdev->dev); - iio_device_unregister(indio_dev); - free_irq(adc->irq, adc); - if (adc->wakeup1_enable) - free_irq(adc->irq_auto_0, adc); - if (adc->wakeup2_enable) - free_irq(adc->irq_auto_1, adc); + ret = devm_add_action_or_reset(&pdev->dev, + palmas_disable_wakeup, + &pdev->dev); + if (ret) + return ret; + } return 0; } @@ -834,7 +809,6 @@ MODULE_DEVICE_TABLE(of, of_palmas_gpadc_match_tbl); static struct platform_driver palmas_gpadc_driver = { .probe = palmas_gpadc_probe, - .remove = palmas_gpadc_remove, .driver = { .name = MOD_NAME, .pm = pm_sleep_ptr(&palmas_pm_ops),