From patchwork Tue Aug 24 20:52:49 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christophe JAILLET X-Patchwork-Id: 12455813 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=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT 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 86B9FC4320A for ; Tue, 24 Aug 2021 20:52:55 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 6B21161357 for ; Tue, 24 Aug 2021 20:52:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234371AbhHXUxi (ORCPT ); Tue, 24 Aug 2021 16:53:38 -0400 Received: from smtp05.smtpout.orange.fr ([80.12.242.127]:41702 "EHLO smtp.smtpout.orange.fr" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231411AbhHXUxh (ORCPT ); Tue, 24 Aug 2021 16:53:37 -0400 Received: from pop-os.home ([90.126.253.178]) by mwinf5d09 with ME id lYsq2500B3riaq203YsqZq; Tue, 24 Aug 2021 22:52:51 +0200 X-ME-Helo: pop-os.home X-ME-Auth: Y2hyaXN0b3BoZS5qYWlsbGV0QHdhbmFkb28uZnI= X-ME-Date: Tue, 24 Aug 2021 22:52:51 +0200 X-ME-IP: 90.126.253.178 From: Christophe JAILLET To: ardeleanalex@gmail.com, jic23@kernel.org, lars@metafoo.de, andy.shevchenko@gmail.com Cc: linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org, kernel-janitors@vger.kernel.org, Christophe JAILLET Subject: [PATCH] iio: adc128s052: Simplify 'adc128_probe()' Date: Tue, 24 Aug 2021 22:52:49 +0200 Message-Id: X-Mailer: git-send-email 2.30.2 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-iio@vger.kernel.org Turn 'adc128_probe()' into a full resource managed function to simplify the code. This way, the .remove function can be removed. Doing so, the only 'spi_get_drvdata()' call is removed and the corresponding 'spi_set_drvdata()' can be removed as well. Suggested-by: Alexandru Ardelean Signed-off-by: Christophe JAILLET Reviewed-by: Alexandru Ardelean --- Compile tested only. When reviewing, pay special attention to the 'spi_set_drvdata()' call removal. I recently introduced a regression with a too aggressive cleanup like that. This patch should be applied after https://lore.kernel.org/linux-iio/f33069f0-601b-4bbb-3766-026f7a161912@wanadoo.fr/T/#meb792dcd6540f87d9ae041660ca4738a776e924a --- drivers/iio/adc/ti-adc128s052.c | 34 +++++++++++---------------------- 1 file changed, 11 insertions(+), 23 deletions(-) diff --git a/drivers/iio/adc/ti-adc128s052.c b/drivers/iio/adc/ti-adc128s052.c index 83c1ae07b3e9..e1afdb775100 100644 --- a/drivers/iio/adc/ti-adc128s052.c +++ b/drivers/iio/adc/ti-adc128s052.c @@ -132,6 +132,13 @@ static const struct iio_info adc128_info = { .read_raw = adc128_read_raw, }; +static void adc128_disable_regulator(void *data) +{ + struct regulator *reg = data; + + regulator_disable(reg); +} + static int adc128_probe(struct spi_device *spi) { struct iio_dev *indio_dev; @@ -151,8 +158,6 @@ static int adc128_probe(struct spi_device *spi) adc = iio_priv(indio_dev); adc->spi = spi; - spi_set_drvdata(spi, indio_dev); - indio_dev->name = spi_get_device_id(spi)->name; indio_dev->modes = INDIO_DIRECT_MODE; indio_dev->info = &adc128_info; @@ -167,29 +172,13 @@ static int adc128_probe(struct spi_device *spi) ret = regulator_enable(adc->reg); if (ret < 0) return ret; - - mutex_init(&adc->lock); - - ret = iio_device_register(indio_dev); + ret = devm_add_action_or_reset(&spi->dev, adc128_disable_regulator, adc->reg); if (ret) - goto err_disable_regulator; - - return 0; - -err_disable_regulator: - regulator_disable(adc->reg); - return ret; -} - -static int adc128_remove(struct spi_device *spi) -{ - struct iio_dev *indio_dev = spi_get_drvdata(spi); - struct adc128 *adc = iio_priv(indio_dev); + return ret; - iio_device_unregister(indio_dev); - regulator_disable(adc->reg); + mutex_init(&adc->lock); - return 0; + return devm_iio_device_register(&spi->dev, indio_dev); } static const struct of_device_id adc128_of_match[] = { @@ -231,7 +220,6 @@ static struct spi_driver adc128_driver = { .acpi_match_table = ACPI_PTR(adc128_acpi_match), }, .probe = adc128_probe, - .remove = adc128_remove, .id_table = adc128_id, }; module_spi_driver(adc128_driver);