From patchwork Mon May 4 12:55:45 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hans de Goede X-Patchwork-Id: 11525883 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 E4B6117EF for ; Mon, 4 May 2020 12:57:00 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id CC96A2075E for ; Mon, 4 May 2020 12:57:00 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="Z3FbPmU1" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728417AbgEDM4Z (ORCPT ); Mon, 4 May 2020 08:56:25 -0400 Received: from us-smtp-delivery-1.mimecast.com ([207.211.31.120]:55803 "EHLO us-smtp-1.mimecast.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1728341AbgEDM4Y (ORCPT ); Mon, 4 May 2020 08:56:24 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1588596983; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=rJNru8ixfqjGEtDeeNyMt8t7n+JBAGgwnT5Seqsq/6E=; b=Z3FbPmU1WQHEhm/+Qq+JHhUg7RGGGWdk1I2jiJ/xWC3dB7AjW/QzEZofo5GABWAyfcJEJ6 6D8Gm2feunyFADpuRocro6iyIsdnGc1j/J4G9jjca7FWtgTZDUG8kZGwMF0VvPrXa8Mq/c uRac58bOVDkoU4H9+fYT94UMTt07hck= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-139-bneyd7u0MQy9k0ZSwgs9BA-1; Mon, 04 May 2020 08:56:19 -0400 X-MC-Unique: bneyd7u0MQy9k0ZSwgs9BA-1 Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.phx2.redhat.com [10.5.11.14]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 79231108BD1D; Mon, 4 May 2020 12:56:17 +0000 (UTC) Received: from x1.localdomain.com (ovpn-114-224.ams2.redhat.com [10.36.114.224]) by smtp.corp.redhat.com (Postfix) with ESMTP id EA3875D9D5; Mon, 4 May 2020 12:56:14 +0000 (UTC) From: Hans de Goede To: "Rafael J . Wysocki" , Len Brown , Darren Hart , Andy Shevchenko , Jonathan Cameron Cc: Hans de Goede , linux-acpi@vger.kernel.org, platform-driver-x86@vger.kernel.org, linux-kernel@vger.kernel.org, Hartmut Knaack , Lars-Peter Clausen , Peter Meerwald-Stadler , linux-iio@vger.kernel.org Subject: [PATCH v4 05/11] iio: light: cm32181: Clean up the probe function a bit Date: Mon, 4 May 2020 14:55:45 +0200 Message-Id: <20200504125551.434647-5-hdegoede@redhat.com> In-Reply-To: <20200504125551.434647-1-hdegoede@redhat.com> References: <20200504125551.434647-1-hdegoede@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.14 Sender: linux-iio-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-iio@vger.kernel.org 3 small cleanups to cm32181_probe(): 1. Do not log an error when we fail to allocate memory (as a general rule drivers do not log errors for this as the kernel will already have complained loudly that it could not alloc the mem). 2. Remove the i2c_set_clientdata() call, we never use i2c_get_clientdata() or dev_get_drvdata() anywhere. 3. Add a dev helper variable and use it in various places instead of &client->dev. Signed-off-by: Hans de Goede --- Changes in v3: - This is a new patch in v3 of this patch-set --- drivers/iio/light/cm32181.c | 20 +++++++------------- 1 file changed, 7 insertions(+), 13 deletions(-) diff --git a/drivers/iio/light/cm32181.c b/drivers/iio/light/cm32181.c index 92b9ce91fe0a..f6261798baa3 100644 --- a/drivers/iio/light/cm32181.c +++ b/drivers/iio/light/cm32181.c @@ -342,22 +342,20 @@ static const struct iio_info cm32181_info = { static int cm32181_probe(struct i2c_client *client) { + struct device *dev = &client->dev; struct cm32181_chip *cm32181; struct iio_dev *indio_dev; int ret; - indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*cm32181)); - if (!indio_dev) { - dev_err(&client->dev, "devm_iio_device_alloc failed\n"); + indio_dev = devm_iio_device_alloc(dev, sizeof(*cm32181)); + if (!indio_dev) return -ENOMEM; - } cm32181 = iio_priv(indio_dev); - i2c_set_clientdata(client, indio_dev); cm32181->client = client; mutex_init(&cm32181->lock); - indio_dev->dev.parent = &client->dev; + indio_dev->dev.parent = dev; indio_dev->channels = cm32181_channels; indio_dev->num_channels = ARRAY_SIZE(cm32181_channels); indio_dev->info = &cm32181_info; @@ -365,19 +363,15 @@ static int cm32181_probe(struct i2c_client *client) ret = cm32181_reg_init(cm32181); if (ret) { - dev_err(&client->dev, - "%s: register init failed\n", - __func__); + dev_err(dev, "%s: register init failed\n", __func__); return ret; } indio_dev->name = cm32181->info->name; - ret = devm_iio_device_register(&client->dev, indio_dev); + ret = devm_iio_device_register(dev, indio_dev); if (ret) { - dev_err(&client->dev, - "%s: regist device failed\n", - __func__); + dev_err(dev, "%s: regist device failed\n", __func__); return ret; }