From patchwork Sat Feb 17 16:42:47 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jonathan Cameron X-Patchwork-Id: 13561473 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 282037D3E6; Sat, 17 Feb 2024 16:44:24 +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=1708188264; cv=none; b=VMxzxRGOtuqHqT0A4MyJlkD2I7M21Ns6J2xo8Z0OIcxs7/yGG7DeR3wmOEuWrGnunKWllQ1KmZ1u2rtgJrgeN0V24eSDJ9HIOBLpMOOyPH3NAhQvaCI7bf9sPfzexypn2t7wUZkraloyw3Al7/NtsUvwib+ETCiadKafWYYpgJk= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1708188264; c=relaxed/simple; bh=qJ6hucCm0b/moPq3jjlQ5H1GFMO0uvJDXAqN+WPZ58Y=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=GTo+trGEMkBUxM/Wsc257grAfwK7whsWbqFyWo1BrAaiJ69P/fwacnjJtLrVAA4wNWo8orXja1+SGF3pP6HrUB/d5Svazhg4ON6L7XLE6NEFdZIXW+sA7d7iZm769VCf/T81Lia1YiEEtc9Gyqodz9RGC/NCvaoImgbJ8mCJ2Yw= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=PhRjTLth; 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="PhRjTLth" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 372DFC433F1; Sat, 17 Feb 2024 16:44:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1708188264; bh=qJ6hucCm0b/moPq3jjlQ5H1GFMO0uvJDXAqN+WPZ58Y=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=PhRjTLthodEA3krPOq/Col/SfgvBrKh7t/mM5NDTSNpg1QSfAW3+SEdPztOUx67U+ PcGsH1m93T5PS3ybxImh3RfxeVA3iRo6vMKh85wld+mVOPDtZrH7OxgwwKIvF218wX WC35HjZXVw8czjmO2i+X996MzFkQPrSaEfZ0LygelAmSNSPoV0Dqbd0rhfdGeOXAiQ QrHkTRjEHHbPLqURWxK4NF1lq54+0TnGVZst+plDvMhNiKlEBdZ/BO9VEfbaqoH+/2 Zg4cWbVaGEVAOtaQB0xA7wZw+hKLkn8eXye4UIP9kUsS5o0G9S/6uqX6R7kcNDqOQv p8lFcu94TzSCw== From: Jonathan Cameron To: linux-iio@vger.kernel.org, "Rafael J . Wysocki" , Len Brown , linux-acpi@vger.kernel.org, Andy Shevchenko , Greg Kroah-Hartman , Daniel Scally , Heikki Krogerus , Sakari Ailus , Julia Lawall Cc: =?utf-8?q?Nuno_S=C3=A1?= , Cosmin Tanislav , Mihail Chindris , Rasmus Villemoes , Tomislav Denis , Marek Vasut , Olivier Moysan , Fabrice Gasnier , Lad Prabhakar , Dmitry Baryshkov , Marijn Suijten , Marius Cristea , Ibrahim Tilki , Peter Zijlstra , Jonathan Cameron Subject: [PATCH v4 13/15] iio: dac: ad3552r: Use device_for_each_child_node_scoped() Date: Sat, 17 Feb 2024 16:42:47 +0000 Message-ID: <20240217164249.921878-14-jic23@kernel.org> X-Mailer: git-send-email 2.43.2 In-Reply-To: <20240217164249.921878-1-jic23@kernel.org> References: <20240217164249.921878-1-jic23@kernel.org> Precedence: bulk X-Mailing-List: linux-acpi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Jonathan Cameron Switching to the _scoped() version removes the need for manual calling of fwnode_handle_put() in the paths where the code exits the loop early. In this case that's all in error paths. Removing the goto err; statements also allows more extensive use of dev_err_probe() further simplifying the code. Cc: Mihail Chindris Signed-off-by: Jonathan Cameron --- drivers/iio/dac/ad3552r.c | 51 +++++++++++++++------------------------ 1 file changed, 19 insertions(+), 32 deletions(-) diff --git a/drivers/iio/dac/ad3552r.c b/drivers/iio/dac/ad3552r.c index a492e8f2fc0f..e14a065b29ca 100644 --- a/drivers/iio/dac/ad3552r.c +++ b/drivers/iio/dac/ad3552r.c @@ -880,7 +880,6 @@ static void ad3552r_reg_disable(void *reg) static int ad3552r_configure_device(struct ad3552r_desc *dac) { struct device *dev = &dac->spi->dev; - struct fwnode_handle *child; struct regulator *vref; int err, cnt = 0, voltage, delta = 100000; u32 vals[2], val, ch; @@ -949,53 +948,45 @@ static int ad3552r_configure_device(struct ad3552r_desc *dac) return -ENODEV; } - device_for_each_child_node(dev, child) { + device_for_each_child_node_scoped(dev, child) { err = fwnode_property_read_u32(child, "reg", &ch); - if (err) { - dev_err(dev, "mandatory reg property missing\n"); - goto put_child; - } - if (ch >= AD3552R_NUM_CH) { - dev_err(dev, "reg must be less than %d\n", - AD3552R_NUM_CH); - err = -EINVAL; - goto put_child; - } + if (err) + return dev_err_probe(dev, err, + "mandatory reg property missing\n"); + if (ch >= AD3552R_NUM_CH) + return dev_err_probe(dev, -EINVAL, + "reg must be less than %d\n", + AD3552R_NUM_CH); if (fwnode_property_present(child, "adi,output-range-microvolt")) { err = fwnode_property_read_u32_array(child, "adi,output-range-microvolt", vals, 2); - if (err) { - dev_err(dev, + if (err) + return dev_err_probe(dev, err, "adi,output-range-microvolt property could not be parsed\n"); - goto put_child; - } err = ad3552r_find_range(dac->chip_id, vals); - if (err < 0) { - dev_err(dev, - "Invalid adi,output-range-microvolt value\n"); - goto put_child; - } + if (err < 0) + return dev_err_probe(dev, err, + "Invalid adi,output-range-microvolt value\n"); + val = err; err = ad3552r_set_ch_value(dac, AD3552R_CH_OUTPUT_RANGE_SEL, ch, val); if (err) - goto put_child; + return err; dac->ch_data[ch].range = val; } else if (dac->chip_id == AD3542R_ID) { - dev_err(dev, - "adi,output-range-microvolt is required for ad3542r\n"); - err = -EINVAL; - goto put_child; + return dev_err_probe(dev, -EINVAL, + "adi,output-range-microvolt is required for ad3542r\n"); } else { err = ad3552r_configure_custom_gain(dac, child, ch); if (err) - goto put_child; + return err; } ad3552r_calc_gain_and_offset(dac, ch); @@ -1003,7 +994,7 @@ static int ad3552r_configure_device(struct ad3552r_desc *dac) err = ad3552r_set_ch_value(dac, AD3552R_CH_SELECT, ch, 1); if (err < 0) - goto put_child; + return err; dac->channels[cnt] = AD3552R_CH_DAC(ch); ++cnt; @@ -1021,10 +1012,6 @@ static int ad3552r_configure_device(struct ad3552r_desc *dac) dac->num_ch = cnt; return 0; -put_child: - fwnode_handle_put(child); - - return err; } static int ad3552r_init(struct ad3552r_desc *dac)