From patchwork Thu Aug 1 06:13:50 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Javier Carrasco X-Patchwork-Id: 816562 Received: from mail-wr1-f54.google.com (mail-wr1-f54.google.com [209.85.221.54]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 606EF16D9CC; Thu, 1 Aug 2024 06:13:59 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.221.54 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1722492841; cv=none; b=mzyKooZ1pG9kk4B2QwlovoLqzfzFByHpIZh22j4V2Df7Oazwa6jaq8LJe968fp5ECB1ZMJEs1wj6mHVq9brWIaYuL6Hb07BOtQJoqIjv89xvTlmyzoFbdjRK95rcaGS7htCjywlmFdkxYyVvPKyrz6PIA714NQ2aNXlFubM7wu8= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1722492841; c=relaxed/simple; bh=QFolg12C6V7SfGr1X/Q07nrFu7zCcR/xL99lde/5xoQ=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; 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a=ed25519-sha256; t=1722492833; l=1565; i=javier.carrasco.cruz@gmail.com; s=20240312; h=from:subject:message-id; bh=QFolg12C6V7SfGr1X/Q07nrFu7zCcR/xL99lde/5xoQ=; b=o1NXng6xwZU2bsAiSqsuCOR2/JS3PHQwTAD/8n1zoxZLZQalnqVR3k0a7inWk8yVvTao6fOkF Ftyxo1QzuLrBzMoP0hIJSns2cTyVWLJ3s25EZVaOxbH6HTl1dTm64K8 X-Developer-Key: i=javier.carrasco.cruz@gmail.com; a=ed25519; pk=lzSIvIzMz0JhJrzLXI0HAdPwsNPSSmEn6RbS+PTS9aQ= Drop the manual access to the fwnode of the device to iterate over its child nodes. `device_for_each_child_node` macro provides direct access to the child nodes, and given that they are only required within the loop, the scoped variant of the macro can be used. Use the `device_for_each_child_node_scoped` macro to iterate over the direct child nodes of the device. Signed-off-by: Javier Carrasco --- drivers/hwtracing/coresight/coresight-cti-platform.c | 10 +++------- 1 file changed, 3 insertions(+), 7 deletions(-) diff --git a/drivers/hwtracing/coresight/coresight-cti-platform.c b/drivers/hwtracing/coresight/coresight-cti-platform.c index ccef04f27f12..d0ae10bf6128 100644 --- a/drivers/hwtracing/coresight/coresight-cti-platform.c +++ b/drivers/hwtracing/coresight/coresight-cti-platform.c @@ -416,20 +416,16 @@ static int cti_plat_create_impdef_connections(struct device *dev, struct cti_drvdata *drvdata) { int rc = 0; - struct fwnode_handle *fwnode = dev_fwnode(dev); - struct fwnode_handle *child = NULL; - if (IS_ERR_OR_NULL(fwnode)) + if (IS_ERR_OR_NULL(dev_fwnode(dev))) return -EINVAL; - fwnode_for_each_child_node(fwnode, child) { + device_for_each_child_node_scoped(dev, child) { if (cti_plat_node_name_eq(child, CTI_DT_CONNS)) - rc = cti_plat_create_connection(dev, drvdata, - child); + rc = cti_plat_create_connection(dev, drvdata, child); if (rc != 0) break; } - fwnode_handle_put(child); return rc; } From patchwork Thu Aug 1 06:13:51 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Javier Carrasco X-Patchwork-Id: 816170 Received: from mail-lf1-f52.google.com (mail-lf1-f52.google.com [209.85.167.52]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 481B2170A2F; Thu, 1 Aug 2024 06:14:02 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.167.52 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1722492843; cv=none; b=iRn17Yf7jDfoykRjWgrf5CDsBAlSf/jQ5O89JqSCd6G47zOt3iU4DQsMIEr2QAmYRfVFzbIL0hAUNWDmuR+xGemO+ZWTZxlNa109bB2RtG/UYv+BRF9K3Kq/+DV6iw3E+Ac3/9Vhgm7+zth8Nd2Pl2SLyFVfK1dXmAnTAnRP/uo= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1722492843; c=relaxed/simple; bh=yyQNHjFv6OaCNbO9wuo6ZoLCj4JK3H1u8HwFjN8qxho=; 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a=ed25519-sha256; t=1722492833; l=1237; i=javier.carrasco.cruz@gmail.com; s=20240312; h=from:subject:message-id; bh=yyQNHjFv6OaCNbO9wuo6ZoLCj4JK3H1u8HwFjN8qxho=; b=oiQRLvjRafZ6kChiVJ1SXsWmSE4ZPM8Bzb8wvKCGEJJKYDspf8vhiz7JFcKhI2WNCnGKJSsdP w0X7lZ8NT9fBHmm9TcOg7g6kH5uj3CiLje7PopravaIDQy3sFa+0VMB X-Developer-Key: i=javier.carrasco.cruz@gmail.com; a=ed25519; pk=lzSIvIzMz0JhJrzLXI0HAdPwsNPSSmEn6RbS+PTS9aQ= Drop the manual access to the fwnode of the device to iterate over its child nodes. `device_for_each_child_node` macro provides direct access to the child nodes, and given that they are only required within the loop, the scoped variant of the macro can be used. Use the `device_for_each_child_node_scoped` macro to iterate over the direct child nodes of the device. Signed-off-by: Javier Carrasco Reviewed-by: Nuno Sa --- drivers/iio/adc/ad7768-1.c | 5 +---- 1 file changed, 1 insertion(+), 4 deletions(-) diff --git a/drivers/iio/adc/ad7768-1.c b/drivers/iio/adc/ad7768-1.c index 70a25949142c..721672fe84ab 100644 --- a/drivers/iio/adc/ad7768-1.c +++ b/drivers/iio/adc/ad7768-1.c @@ -544,13 +544,10 @@ static int ad7768_set_channel_label(struct iio_dev *indio_dev, { struct ad7768_state *st = iio_priv(indio_dev); struct device *device = indio_dev->dev.parent; - struct fwnode_handle *fwnode; - struct fwnode_handle *child; const char *label; int crt_ch = 0; - fwnode = dev_fwnode(device); - fwnode_for_each_child_node(fwnode, child) { + device_for_each_child_node_scoped(device, child) { if (fwnode_property_read_u32(child, "reg", &crt_ch)) continue; From patchwork Thu Aug 1 06:13:52 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Javier Carrasco X-Patchwork-Id: 816561 Received: from mail-wr1-f46.google.com (mail-wr1-f46.google.com [209.85.221.46]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id D8A471A08A4; 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Wed, 31 Jul 2024 23:14:01 -0700 (PDT) Received: from [127.0.1.1] ([213.208.157.67]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-36b367c032bsm18696455f8f.12.2024.07.31.23.13.59 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 31 Jul 2024 23:14:01 -0700 (PDT) From: Javier Carrasco Date: Thu, 01 Aug 2024 08:13:52 +0200 Subject: [PATCH 3/4] iio: adc: xilinx-ams: use device_* to iterate over device child nodes Precedence: bulk X-Mailing-List: linux-leds@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20240801-device_child_node_access-v1-3-ddfa21bef6f2@gmail.com> References: <20240801-device_child_node_access-v1-0-ddfa21bef6f2@gmail.com> In-Reply-To: <20240801-device_child_node_access-v1-0-ddfa21bef6f2@gmail.com> To: Suzuki K Poulose , Mike Leach , James Clark , Alexander Shishkin , Michael Hennerich , Lars-Peter Clausen , Jonathan Cameron , Anand Ashok Dumbre , Michal Simek , Sakari Ailus , Pavel Machek , Lee Jones Cc: coresight@lists.linaro.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-iio@vger.kernel.org, linux-leds@vger.kernel.org, Javier Carrasco X-Mailer: b4 0.14-dev X-Developer-Signature: v=1; a=ed25519-sha256; t=1722492833; l=1411; i=javier.carrasco.cruz@gmail.com; s=20240312; h=from:subject:message-id; bh=i0sBRG11zXAIKwjcoVFnL1Y8Swho6X1BW3kA0cfdhTg=; b=7m5HHkACNNgu/mKXKiw3ayPLFGCDzWUt0OJixovqW9e6tKnbUu5tW6DIs8OjCzuCw1sjzjPGM 1aSWHyGe+yAAbReOXBk5pMYYe2cBhrBvsU4VvOuvv1pEID9ysZtlWuo X-Developer-Key: i=javier.carrasco.cruz@gmail.com; a=ed25519; pk=lzSIvIzMz0JhJrzLXI0HAdPwsNPSSmEn6RbS+PTS9aQ= Use `device_for_each_child_node_scoped()` in `ams_parse_firmware()` to explicitly state device child node access, and simplify the child node handling as it is not required outside the loop. Signed-off-by: Javier Carrasco --- drivers/iio/adc/xilinx-ams.c | 7 ++----- 1 file changed, 2 insertions(+), 5 deletions(-) diff --git a/drivers/iio/adc/xilinx-ams.c b/drivers/iio/adc/xilinx-ams.c index f051358d6b50..27d5e4a6f9d6 100644 --- a/drivers/iio/adc/xilinx-ams.c +++ b/drivers/iio/adc/xilinx-ams.c @@ -1275,7 +1275,6 @@ static int ams_parse_firmware(struct iio_dev *indio_dev) struct ams *ams = iio_priv(indio_dev); struct iio_chan_spec *ams_channels, *dev_channels; struct device *dev = indio_dev->dev.parent; - struct fwnode_handle *child = NULL; struct fwnode_handle *fwnode = dev_fwnode(dev); size_t ams_size; int ret, ch_cnt = 0, i, rising_off, falling_off; @@ -1297,13 +1296,11 @@ static int ams_parse_firmware(struct iio_dev *indio_dev) num_channels += ret; } - fwnode_for_each_child_node(fwnode, child) { + device_for_each_child_node_scoped(dev, child) { if (fwnode_device_is_available(child)) { ret = ams_init_module(indio_dev, child, ams_channels + num_channels); - if (ret < 0) { - fwnode_handle_put(child); 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a=ed25519-sha256; t=1722492833; l=1626; i=javier.carrasco.cruz@gmail.com; s=20240312; h=from:subject:message-id; bh=n9RPwA0mKwp8E3yrA5e5bskfywWjPvxynbcgRtP66H4=; b=KKQapzC7/u9Jck7tT1Y5QlkimkoXnQapCJf6536uEU1HbJu0a4w+37OvHj4efHxY128VYMVz3 D/ifXMyfdkhChw8FAcWBd4j29NwiDIeLsBB2IVdOHzin6zUKRqB2DRV X-Developer-Key: i=javier.carrasco.cruz@gmail.com; a=ed25519; pk=lzSIvIzMz0JhJrzLXI0HAdPwsNPSSmEn6RbS+PTS9aQ= Drop the manual access to the fwnode of the device to iterate over its child nodes. `device_for_each_child_node` macro provides direct access to the child nodes, and given that the `child` variable is only required within the loop, the scoped variant of the macro can be used. Use the `device_for_each_child_node_scoped` macro to iterate over the direct child nodes of the device. Signed-off-by: Javier Carrasco Acked-by: Sakari Ailus --- drivers/leds/flash/leds-as3645a.c | 8 +++----- 1 file changed, 3 insertions(+), 5 deletions(-) diff --git a/drivers/leds/flash/leds-as3645a.c b/drivers/leds/flash/leds-as3645a.c index 2c6ef321b7c8..8e6abedf6e00 100644 --- a/drivers/leds/flash/leds-as3645a.c +++ b/drivers/leds/flash/leds-as3645a.c @@ -478,14 +478,12 @@ static int as3645a_detect(struct as3645a *flash) return as3645a_write(flash, AS_BOOST_REG, AS_BOOST_CURRENT_DISABLE); } -static int as3645a_parse_node(struct as3645a *flash, - struct fwnode_handle *fwnode) +static int as3645a_parse_node(struct as3645a *flash, struct device *dev) { struct as3645a_config *cfg = &flash->cfg; - struct fwnode_handle *child; int rval; - fwnode_for_each_child_node(fwnode, child) { + device_for_each_child_node_scoped(dev, child) { u32 id = 0; fwnode_property_read_u32(child, "reg", &id); @@ -686,7 +684,7 @@ static int as3645a_probe(struct i2c_client *client) flash->client = client; - rval = as3645a_parse_node(flash, dev_fwnode(&client->dev)); + rval = as3645a_parse_node(flash, &client->dev); if (rval < 0) return rval;