From patchwork Sat Feb 24 12:32:14 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jonathan Cameron X-Patchwork-Id: 13570403 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 5BD3518021 for ; Sat, 24 Feb 2024 12:33:14 +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=1708777994; cv=none; b=h/a13d2aiaCe81/LOM6fL1TTTf4ISPWX2Y4x9n53N/wY6XJlmmRmh9GoZexcH3qsztdj5BvMQYR0KM6di76ILB/ZPLSudhbesTsUnAia2ITYeOoS0CZ4lrzorV2iFCbeo4lTxCiwhY+mVgzivW3q+e7YY+3m83UMkXbuNWlb600= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1708777994; c=relaxed/simple; bh=ZEX5V6rA/qW9iOHSltdQCogQSODPZOZ+ahDrhUmzuXE=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=OFru3B52ijbe8PYZ0os5QjPnJ9HYwmNny2PESlVHrYmPIh3aHJ5K6ADQwvTV5EXIkpkpF7VwwgQrZrb/u6nRDu8Rjj3lCsEy7niq2Vl2jHZEKc+16zCq73sTqIB6YslSUJ4XPED7i/4Pdn5BpDhKLC6V9s1OFLWOVOY1tTgTz7s= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=BHnaQHCW; 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="BHnaQHCW" Received: by smtp.kernel.org (Postfix) with ESMTPSA id D10D4C433F1; Sat, 24 Feb 2024 12:33:09 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1708777993; bh=ZEX5V6rA/qW9iOHSltdQCogQSODPZOZ+ahDrhUmzuXE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=BHnaQHCWVKlV7sgvKhsgqCGbIyU1922hMsOKjubselcgzAfEYtvnKA4RGOMwTZRV0 vXfomgzxAW0EqrBwiSD6HBdQ6aRqawrxvpG8/qtI9lj4M5JVx9grc5igV/CoeADki5 lSOl9zM9lUZJJ1nBeqEWIFkU3bCnR9LkRuOGIN3IXYSSmsFIMAntAk8Pj0AI6euGHv SeoayNIyiMlgsQpOFvO1A+qsFk7OSlh69CgzcJvijOrLayPXWbaJwcMx4lB97zF4ik +Me7O5Lrxzy3qL+0mhaPFKZ0qv9JQOOP1/jUoOvto8rc4TBG/u+Jx2Arve2Z1ucwKc bnhR4pjF0llnQ== From: Jonathan Cameron To: linux-iio@vger.kernel.org, =?utf-8?q?Nuno_S=C3=A1?= , Andy Shevchenko Cc: 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 v5 8/9] iio: dac: ad3552r: Use device_for_each_child_node_scoped() Date: Sat, 24 Feb 2024 12:32:14 +0000 Message-ID: <20240224123215.161469-9-jic23@kernel.org> X-Mailer: git-send-email 2.44.0 In-Reply-To: <20240224123215.161469-1-jic23@kernel.org> References: <20240224123215.161469-1-jic23@kernel.org> Precedence: bulk X-Mailing-List: linux-iio@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)