From patchwork Sun Jan 14 17:20:06 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jonathan Cameron X-Patchwork-Id: 762775 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 A66DB6D39; Sun, 14 Jan 2024 17:21:28 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="WYOTVyy2" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 6BF54C43394; Sun, 14 Jan 2024 17:21:22 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1705252888; bh=avblZNUZPW37/lFlaKodTcB8VrxIAwbeFy7tylIiRjs=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=WYOTVyy2reJydXewi1k2UAR9Oy6lcXOpB93TAdKPxm/sRfDqdCnX8h+9vwAlkDxPa 4i9zidEj064pOx/6HmRG8u9usDNsJNrTPRn2zrmNy8G1pT9sX1OLiGLdVGTm+jVjyx bUzllfUvW5xfduCbxErkUfuHwMWwZu757bO5cVs/lRm1T9LFzmyuom6SonQiEmcGGT fWfB/gH1kEUUYWehhWf2nG3H/a0MU4f4+8y2T4lnreaJDbCQhtsXArAcFVaFWH98Xd fN4TNAMOqV6tQwFgp+5tOpzLj4W7kNVuwhmNeH6mLZps5vq2w8yXN9WuL5zJkzevou toXYdyXRwI8tQ== 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 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 , Jonathan Cameron Subject: [PATCH 10/13] iio: dac: ad3552: Use __free(fwnode_handle) to replace fwnode_handle_put() calls Date: Sun, 14 Jan 2024 17:20:06 +0000 Message-ID: <20240114172009.179893-11-jic23@kernel.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240114172009.179893-1-jic23@kernel.org> References: <20240114172009.179893-1-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 This use of the new cleanup.h scope based freeing infrastructure allows us to exit directly from error conditions within the device_for_each_child_node(dev, child) loop. On normal exit from that loop no fwnode_handle reference will be held and the child pointer will be NULL thus making the automatically run fwnode_handle_put() a noop. 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 | 50 +++++++++++++++------------------------ 1 file changed, 19 insertions(+), 31 deletions(-) diff --git a/drivers/iio/dac/ad3552r.c b/drivers/iio/dac/ad3552r.c index a492e8f2fc0f..f21c88cb480a 100644 --- a/drivers/iio/dac/ad3552r.c +++ b/drivers/iio/dac/ad3552r.c @@ -880,7 +880,7 @@ 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 fwnode_handle *child __free(fwnode_handle) = NULL; struct regulator *vref; int err, cnt = 0, voltage, delta = 100000; u32 vals[2], val, ch; @@ -951,51 +951,43 @@ static int ad3552r_configure_device(struct ad3552r_desc *dac) device_for_each_child_node(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 +995,7 @@ 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 +1013,6 @@ 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)