From nobody Thu Apr 2 17:18:15 2026 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id EB16D32ED3A; Tue, 10 Feb 2026 19:42:17 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1770752538; cv=none; b=lCOSSPQjQamPGROMvGPmoH9iajW7xbFUsu6/cE3N4xfSg0LDGKLUC1yPUTvT1oG3T6bf+SaRCt7WB3hgRLcn0SWDUmHTqcZ3r4xaqm4CsK5dLFE3O76NFmC49F5/+ut2rjYvAbIzuDDPFzM+RqxRDUEcxZ48xnhGKGLLnzkk4io= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1770752538; c=relaxed/simple; bh=9bhEdZyE426udr5V3ZdReH9PNJlu7ZAy82PbMg/t5Hs=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=JGmJjpVDxNo/IEyZLHt489WdMuHNrFWNNaVdILa71AVkVJVMQqUBdr++dY5a8ivdhNFwpoFX1WmMLlmV3Ge3FGMiZuK1EAa4GDsUmo98Sv9Af2M7y5dm4RF+Pfjf2u1CM5mUCgOk3AAGjmgJ/LUNxONWcUWJLlgwLNC4FD9lkzk= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=OEozOCg0; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="OEozOCg0" Received: by smtp.kernel.org (Postfix) with ESMTPS id C7113C2BC9E; Tue, 10 Feb 2026 19:42:17 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1770752537; bh=9bhEdZyE426udr5V3ZdReH9PNJlu7ZAy82PbMg/t5Hs=; h=From:Date:Subject:References:In-Reply-To:To:Cc:Reply-To:From; b=OEozOCg0owq3RF+KB9xK+HP79Jw6a0aBEnw/GEPuWSFGZXvPiYE49iHSdMsnLiVOD VziJXKLiUB3WkKsMLDH4ChKeF6QdZYYPvwxqdvmNvEFF10PJYNpbo3js8XpypdZx72 0T+GLoqYLrEOwVdg2aQt+MKbCdy4DrhdwYdoCjq0vhhKGgIoyoS7U+RUxVrF77OWXK VHKmdSW0X+WZj8KvHvHApSrcXuAFBUMBsjOILTNSlnZNm6IjeVjZqlH+BA4fu1Y104 If35YVcCSrk3zBm7mSYcUG04Jrgp1E7tlhEbvjwjaedwS56eP9KFEpUwMc7GjxtRPw n1UtcVw/bwSIg== Received: from aws-us-west-2-korg-lkml-1.web.codeaurora.org (localhost.localdomain [127.0.0.1]) by smtp.lore.kernel.org (Postfix) with ESMTP id BC647EB2709; Tue, 10 Feb 2026 19:42:17 +0000 (UTC) From: Rodrigo Alencar via B4 Relay Date: Tue, 10 Feb 2026 19:42:07 +0000 Subject: [PATCH v4 07/11] iio: amplifiers: ad8366: refactor device resource management Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20260210-iio-ad8366-update-v4-7-15505f7b15b4@analog.com> References: <20260210-iio-ad8366-update-v4-0-15505f7b15b4@analog.com> In-Reply-To: <20260210-iio-ad8366-update-v4-0-15505f7b15b4@analog.com> To: linux-kernel@vger.kernel.org, linux-iio@vger.kernel.org, devicetree@vger.kernel.org Cc: Michael Hennerich , Lars-Peter Clausen , Jonathan Cameron , David Lechner , Andy Shevchenko , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Rodrigo Alencar X-Mailer: b4 0.14.3 X-Developer-Signature: v=1; a=ed25519-sha256; t=1770752535; l=3237; i=rodrigo.alencar@analog.com; s=default; h=from:subject:message-id; bh=Iqe9a/13m6an1CCQungGiUSkPN31FhHQ76ZeG/vcghA=; b=T8Sd1yRyxrjB/wAll/W9WhydtNy4I7AZzvIVKlITL4Qq2bviYp2zeL9Zw6zqN6ryAX22Mf7Dy Ux6ZF5F/I74BbPr7jwtL/jRk36YoZ4k70W8gqKW5/BOKenNnkfcWtqv X-Developer-Key: i=rodrigo.alencar@analog.com; a=ed25519; pk=ULeHbgU/OYh/PG/4anHDfLgldFItQHAhOktYRVLMFRo= X-Endpoint-Received: by B4 Relay for rodrigo.alencar@analog.com/default with auth_id=561 X-Original-From: Rodrigo Alencar Reply-To: rodrigo.alencar@analog.com From: Rodrigo Alencar Adhere modern device resource management with the following: - Voltage regulator managed and enabled internally; - IIO device registration handled with devm_iio_device_register(); - removal of goto's from the probe function; - ad8366_remove() removed as it is not needed anymore; With the drop of goto's dev_err_probe() is used to report probe errors. Signed-off-by: Rodrigo Alencar --- drivers/iio/amplifiers/ad8366.c | 50 +++++++++----------------------------= ---- 1 file changed, 10 insertions(+), 40 deletions(-) diff --git a/drivers/iio/amplifiers/ad8366.c b/drivers/iio/amplifiers/ad836= 6.c index 67817dedd75d..343f370eae65 100644 --- a/drivers/iio/amplifiers/ad8366.c +++ b/drivers/iio/amplifiers/ad8366.c @@ -37,7 +37,6 @@ struct ad8366_info { =20 struct ad8366_state { struct spi_device *spi; - struct regulator *reg; struct mutex lock; /* protect sensor state */ unsigned char ch[2]; enum ad8366_type type; @@ -257,14 +256,10 @@ static int ad8366_probe(struct spi_device *spi) if (ret) return ret; =20 - st->reg =3D devm_regulator_get(&spi->dev, "vcc"); - if (!IS_ERR(st->reg)) { - ret =3D regulator_enable(st->reg); - if (ret) - return ret; - } + ret =3D devm_regulator_get_enable(dev, "vcc"); + if (ret) + return dev_err_probe(dev, ret, "Failed to get regulator\n"); =20 - spi_set_drvdata(spi, indio_dev); st->spi =3D spi; st->type =3D spi_get_device_id(spi)->driver_data; =20 @@ -278,17 +273,15 @@ static int ad8366_probe(struct spi_device *spi) case ID_HMC792: case ID_HMC1119: rstc =3D devm_reset_control_get_optional_exclusive_deasserted(dev, NULL); - if (IS_ERR(rstc)) { - ret =3D PTR_ERR(rstc); - goto error_disable_reg; - } + if (IS_ERR(rstc)) + return dev_err_probe(dev, PTR_ERR(rstc), + "Failed to get reset controller\n"); + indio_dev->channels =3D ada4961_channels; indio_dev->num_channels =3D ARRAY_SIZE(ada4961_channels); break; default: - dev_err(&spi->dev, "Invalid device ID\n"); - ret =3D -EINVAL; - goto error_disable_reg; + return dev_err_probe(dev, -EINVAL, "Invalid device ID\n"); } =20 st->info =3D &ad8366_infos[st->type]; @@ -298,31 +291,9 @@ static int ad8366_probe(struct spi_device *spi) =20 ret =3D ad8366_write(indio_dev, 0, 0); if (ret < 0) - goto error_disable_reg; + return dev_err_probe(dev, ret, "failed to write initial gain\n"); =20 - ret =3D iio_device_register(indio_dev); - if (ret) - goto error_disable_reg; - - return 0; - -error_disable_reg: - if (!IS_ERR(st->reg)) - regulator_disable(st->reg); - - return ret; -} - -static void ad8366_remove(struct spi_device *spi) -{ - struct iio_dev *indio_dev =3D spi_get_drvdata(spi); - struct ad8366_state *st =3D iio_priv(indio_dev); - struct regulator *reg =3D st->reg; - - iio_device_unregister(indio_dev); - - if (!IS_ERR(reg)) - regulator_disable(reg); + return devm_iio_device_register(dev, indio_dev); } =20 static const struct spi_device_id ad8366_id[] =3D { @@ -340,7 +311,6 @@ static struct spi_driver ad8366_driver =3D { .name =3D KBUILD_MODNAME, }, .probe =3D ad8366_probe, - .remove =3D ad8366_remove, .id_table =3D ad8366_id, }; =20 --=20 2.43.0