From patchwork Fri May 8 14:39:36 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alexandru Ardelean X-Patchwork-Id: 11536727 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 B6A07139F for ; Fri, 8 May 2020 14:39:44 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id A79012083B for ; Fri, 8 May 2020 14:39:44 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727874AbgEHOjo (ORCPT ); Fri, 8 May 2020 10:39:44 -0400 Received: from mx0a-00128a01.pphosted.com ([148.163.135.77]:58608 "EHLO mx0a-00128a01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726689AbgEHOjn (ORCPT ); Fri, 8 May 2020 10:39:43 -0400 Received: from pps.filterd (m0167089.ppops.net [127.0.0.1]) by mx0a-00128a01.pphosted.com (8.16.0.42/8.16.0.42) with SMTP id 048Eardf002016; Fri, 8 May 2020 10:39:42 -0400 Received: from nwd2mta4.analog.com ([137.71.173.58]) by mx0a-00128a01.pphosted.com with ESMTP id 30vtek2mj6-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 08 May 2020 10:39:42 -0400 Received: from SCSQMBX10.ad.analog.com (scsqmbx10.ad.analog.com [10.77.17.5]) by nwd2mta4.analog.com (8.14.7/8.14.7) with ESMTP id 048EdedK050652 (version=TLSv1/SSLv3 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128 verify=FAIL); Fri, 8 May 2020 10:39:41 -0400 Received: from SCSQMBX11.ad.analog.com (10.77.17.10) by SCSQMBX10.ad.analog.com (10.77.17.5) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.1779.2; Fri, 8 May 2020 07:39:39 -0700 Received: from zeus.spd.analog.com (10.64.82.11) by SCSQMBX11.ad.analog.com (10.77.17.10) with Microsoft SMTP Server id 15.1.1779.2 via Frontend Transport; Fri, 8 May 2020 07:39:39 -0700 Received: from localhost.localdomain ([10.48.65.12]) by zeus.spd.analog.com (8.15.1/8.15.1) with ESMTP id 048EdZ0o000479; Fri, 8 May 2020 10:39:36 -0400 From: Alexandru Ardelean To: , CC: , Alexandru Ardelean Subject: [PATCH 2/2] staging: iio: ad5933: convert probe init to use device managed callbacks Date: Fri, 8 May 2020 17:39:36 +0300 Message-ID: <20200508143936.17845-2-alexandru.ardelean@analog.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200508143936.17845-1-alexandru.ardelean@analog.com> References: <20200508143936.17845-1-alexandru.ardelean@analog.com> MIME-Version: 1.0 X-ADIRoutedOnPrem: True X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.216,18.0.676 definitions=2020-05-08_14:2020-05-08,2020-05-08 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 mlxlogscore=999 lowpriorityscore=0 phishscore=0 clxscore=1015 mlxscore=0 bulkscore=0 malwarescore=0 suspectscore=0 adultscore=0 spamscore=0 impostorscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2003020000 definitions=main-2005080130 Sender: linux-iio-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-iio@vger.kernel.org This change moves the clock & regulator disable to use the devm_add_action_or_reset() callback and uses the devm_iio_device_register() to register the IIO device. With this, it should be now possible to get rid of the remove callback. Signed-off-by: Alexandru Ardelean --- .../staging/iio/impedance-analyzer/ad5933.c | 67 +++++++++---------- 1 file changed, 33 insertions(+), 34 deletions(-) diff --git a/drivers/staging/iio/impedance-analyzer/ad5933.c b/drivers/staging/iio/impedance-analyzer/ad5933.c index 633adf1a08c1..c468355b0848 100644 --- a/drivers/staging/iio/impedance-analyzer/ad5933.c +++ b/drivers/staging/iio/impedance-analyzer/ad5933.c @@ -677,6 +677,20 @@ static void ad5933_work(struct work_struct *work) } } +static void ad5933_reg_disable(void *data) +{ + struct ad5933_state *st = data; + + regulator_disable(st->reg); +} + +static void ad5933_clk_disable(void *data) +{ + struct ad5933_state *st = data; + + clk_disable_unprepare(st->mclk); +} + static int ad5933_probe(struct i2c_client *client, const struct i2c_device_id *id) { @@ -704,23 +718,32 @@ static int ad5933_probe(struct i2c_client *client, dev_err(&client->dev, "Failed to enable specified VDD supply\n"); return ret; } - ret = regulator_get_voltage(st->reg); + ret = devm_add_action_or_reset(&client->dev, ad5933_reg_disable, st); + if (ret) + return ret; + + ret = regulator_get_voltage(st->reg); if (ret < 0) - goto error_disable_reg; + return ret; st->vref_mv = ret / 1000; st->mclk = devm_clk_get(&client->dev, "mclk"); - if (IS_ERR(st->mclk) && PTR_ERR(st->mclk) != -ENOENT) { - ret = PTR_ERR(st->mclk); - goto error_disable_reg; - } + if (IS_ERR(st->mclk) && PTR_ERR(st->mclk) != -ENOENT) + return PTR_ERR(st->mclk); if (!IS_ERR(st->mclk)) { ret = clk_prepare_enable(st->mclk); if (ret < 0) - goto error_disable_reg; + return ret; + + ret = devm_add_action_or_reset(&client->dev, + ad5933_clk_disable, + st); + if (ret) + return ret; + ext_clk_hz = clk_get_rate(st->mclk); } @@ -745,36 +768,13 @@ static int ad5933_probe(struct i2c_client *client, ret = ad5933_register_ring_funcs_and_init(&client->dev, indio_dev); if (ret) - goto error_disable_mclk; + return ret; ret = ad5933_setup(st); if (ret) - goto error_unreg_ring; - - ret = iio_device_register(indio_dev); - if (ret) - goto error_unreg_ring; - - return 0; - -error_disable_mclk: - clk_disable_unprepare(st->mclk); -error_disable_reg: - regulator_disable(st->reg); - - return ret; -} - -static int ad5933_remove(struct i2c_client *client) -{ - struct iio_dev *indio_dev = i2c_get_clientdata(client); - struct ad5933_state *st = iio_priv(indio_dev); - - iio_device_unregister(indio_dev); - regulator_disable(st->reg); - clk_disable_unprepare(st->mclk); + return ret; - return 0; + return devm_iio_device_register(&client->dev, indio_dev); } static const struct i2c_device_id ad5933_id[] = { @@ -799,7 +799,6 @@ static struct i2c_driver ad5933_driver = { .of_match_table = ad5933_of_match, }, .probe = ad5933_probe, - .remove = ad5933_remove, .id_table = ad5933_id, }; module_i2c_driver(ad5933_driver);