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no-senders; approved; emergency; loop; banned-address; member-moderation; header-match-alsa-devel.alsa-project.org-0; header-match-alsa-devel.alsa-project.org-1; nonmember-moderation; administrivia; implicit-dest; max-recipients; max-size; news-moderation; no-subject; digests; suspicious-header X-Mailman-Version: 3.3.9 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" Archived-At: List-Archive: List-Help: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: Use scoped for_each_child_of_node_scoped() when iterating over device nodes to make code a bit simpler. Signed-off-by: Krzysztof Kozlowski --- drivers/soc/qcom/apr.c | 5 +---- 1 file changed, 1 insertion(+), 4 deletions(-) diff --git a/drivers/soc/qcom/apr.c b/drivers/soc/qcom/apr.c index 4fbff3a890e2..a956c407ce03 100644 --- a/drivers/soc/qcom/apr.c +++ b/drivers/soc/qcom/apr.c @@ -485,11 +485,10 @@ static int of_apr_add_pd_lookups(struct device *dev) { const char *service_name, *service_path; struct packet_router *apr = dev_get_drvdata(dev); - struct device_node *node; struct pdr_service *pds; int ret; - for_each_child_of_node(dev->of_node, node) { + for_each_child_of_node_scoped(dev->of_node, node) { ret = of_property_read_string_index(node, "qcom,protection-domain", 0, &service_name); if (ret < 0) @@ -499,14 +498,12 @@ static int of_apr_add_pd_lookups(struct device *dev) 1, &service_path); if (ret < 0) { dev_err(dev, "pdr service path missing: %d\n", ret); - of_node_put(node); return ret; } pds = pdr_add_lookup(apr->pdr, service_name, service_path); if (IS_ERR(pds) && PTR_ERR(pds) != -EALREADY) { dev_err(dev, "pdr add lookup failed: %ld\n", PTR_ERR(pds)); - of_node_put(node); return PTR_ERR(pds); } } From patchwork Tue Aug 13 13:09:48 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Krzysztof Kozlowski X-Patchwork-Id: 13762029 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from alsa0.perex.cz (alsa0.perex.cz [77.48.224.243]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id BB596C52D7C for ; Tue, 13 Aug 2024 13:26:37 +0000 (UTC) Received: from alsa1.perex.cz (alsa1.perex.cz [207.180.221.201]) (using TLSv1.2 with cipher ADH-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by alsa0.perex.cz (Postfix) with ESMTPS id 0A42C238E; Tue, 13 Aug 2024 15:26:26 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa0.perex.cz 0A42C238E DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; 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no-senders; approved; emergency; loop; banned-address; member-moderation; header-match-alsa-devel.alsa-project.org-0; header-match-alsa-devel.alsa-project.org-1; nonmember-moderation; administrivia; implicit-dest; max-recipients; max-size; news-moderation; no-subject; digests; suspicious-header X-Mailman-Version: 3.3.9 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" Archived-At: List-Archive: List-Help: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: Use scoped for_each_available_child_of_node_scoped() when iterating over device nodes to make code a bit simpler. Signed-off-by: Krzysztof Kozlowski --- drivers/soc/qcom/qcom_aoss.c | 8 +++----- 1 file changed, 3 insertions(+), 5 deletions(-) diff --git a/drivers/soc/qcom/qcom_aoss.c b/drivers/soc/qcom/qcom_aoss.c index ca2f6b7629ce..60af26667bce 100644 --- a/drivers/soc/qcom/qcom_aoss.c +++ b/drivers/soc/qcom/qcom_aoss.c @@ -394,7 +394,7 @@ static int qmp_cooling_device_add(struct qmp *qmp, static int qmp_cooling_devices_register(struct qmp *qmp) { - struct device_node *np, *child; + struct device_node *np; int count = 0; int ret; @@ -407,15 +407,13 @@ static int qmp_cooling_devices_register(struct qmp *qmp) if (!qmp->cooling_devs) return -ENOMEM; - for_each_available_child_of_node(np, child) { + for_each_available_child_of_node_scoped(np, child) { if (!of_property_present(child, "#cooling-cells")) continue; ret = qmp_cooling_device_add(qmp, &qmp->cooling_devs[count++], child); - if (ret) { - of_node_put(child); + if (ret) goto unroll; - } } if (!count) From patchwork Tue Aug 13 13:09:49 2024 Content-Type: text/plain; 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Tue, 13 Aug 2024 06:10:08 -0700 (PDT) From: Krzysztof Kozlowski Date: Tue, 13 Aug 2024 15:09:49 +0200 Subject: [PATCH 3/6] soc: qcom: ice: use scoped device node handling to simplify error paths MIME-Version: 1.0 Message-Id: <20240813-b4-cleanup-h-of-node-put-other-v1-3-cfb67323a95c@linaro.org> References: <20240813-b4-cleanup-h-of-node-put-other-v1-0-cfb67323a95c@linaro.org> In-Reply-To: <20240813-b4-cleanup-h-of-node-put-other-v1-0-cfb67323a95c@linaro.org> To: Srinivas Kandagatla , Banajit Goswami , Bjorn Andersson , Konrad Dybcio Cc: alsa-devel@alsa-project.org, linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org, Krzysztof Kozlowski X-Mailer: b4 0.14.1 X-Developer-Signature: v=1; a=openpgp-sha256; l=2089; i=krzysztof.kozlowski@linaro.org; h=from:subject:message-id; bh=wSmKVeR5KDA8zEAvS740eQFFBkxeMJlrEwsk0nEhwQs=; b=owEBbQKS/ZANAwAKAcE3ZuaGi4PXAcsmYgBmu1sh5LeIoKQcZBpw8Q0T7w56JOH+NskEVH9ts H6E4FxaqEOJAjMEAAEKAB0WIQTd0mIoPREbIztuuKjBN2bmhouD1wUCZrtbIQAKCRDBN2bmhouD 1+kuD/9Z/MncfojAYUJXJABsySNZGoAFTsvI5oTL/7lPqEhOofrokAIH8o9kLEi5k/uJ+XHxaeD HavJlDNe+CbSNA5hAFM9FDUqqK6X5JeYzasWTGirc6EwmKdPm285CAd2bXU5xOzsyWVYExOl3Y+ nwf/ombpgpleqhr6pcLkryzJ3yo4qQDokdW8Rdq03PWVRDPwyyrRKfBaOs5evJWJBITJMkE5JAe okxPARs5T0b9/lB61sg6aamuwLZ7f1o/MTUjf7ErpLEQQPQ3wnEr5B17HvMMhU97azGI7lVQ4DU 63f2I1gQyoiuQKOBisboJdn8Xx/9OGnpWxMwV3Ud28WlErdlklA9Iag0PG082BUr3kTl4y8qZBl 3gEfXyA87EsahI8JkQ8NrTdxtHfQq4+d+8QBNm5vb8gb3n584yqeqWwtSRdoTSHFfONvXWKv4ef RgpkDi6VWMqi2Bf6Y3F2FSxKvAyeFRwSFXwwwHuBDZUSvJzaOOeuryL6JyFA+LT26GsThf1UlHc B4voocpWUdw3QQ5DK4EnL2bdUlgq2X4m6rJbb6O2MzTuH2p3CrgSpNQfGgrQhk7PtYwD51T3Nzi fYmX6sCsEXg7kJErv6O4RS8B/zcsv382ZGl5XFV1KDD2ASKX5t+f1WT5sgJywP3EHQ4iX94pp9W fGM/J+iufuJEQcw== X-Developer-Key: i=krzysztof.kozlowski@linaro.org; a=openpgp; fpr=9BD07E0E0C51F8D59677B7541B93437D3B41629B Message-ID-Hash: T73HIVBANOHYCTFWJFX4CO7LX26JPP7T X-Message-ID-Hash: T73HIVBANOHYCTFWJFX4CO7LX26JPP7T X-MailFrom: krzysztof.kozlowski@linaro.org X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation; header-match-alsa-devel.alsa-project.org-0; header-match-alsa-devel.alsa-project.org-1; nonmember-moderation; administrivia; implicit-dest; max-recipients; max-size; news-moderation; no-subject; digests; suspicious-header X-Mailman-Version: 3.3.9 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" Archived-At: List-Archive: List-Help: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: Obtain the device node reference with scoped/cleanup.h to reduce error handling and make the code a bit simpler. Signed-off-by: Krzysztof Kozlowski --- drivers/soc/qcom/ice.c | 14 +++++--------- 1 file changed, 5 insertions(+), 9 deletions(-) diff --git a/drivers/soc/qcom/ice.c b/drivers/soc/qcom/ice.c index fbab7fe5c652..50be7a9274a1 100644 --- a/drivers/soc/qcom/ice.c +++ b/drivers/soc/qcom/ice.c @@ -8,6 +8,7 @@ */ #include +#include #include #include #include @@ -265,7 +266,6 @@ struct qcom_ice *of_qcom_ice_get(struct device *dev) { struct platform_device *pdev = to_platform_device(dev); struct qcom_ice *ice; - struct device_node *node; struct resource *res; void __iomem *base; @@ -292,15 +292,15 @@ struct qcom_ice *of_qcom_ice_get(struct device *dev) * (legacy DT binding), then it must at least provide a phandle * to the ICE devicetree node, otherwise ICE is not supported. */ - node = of_parse_phandle(dev->of_node, "qcom,ice", 0); + struct device_node *node __free(device_node) = of_parse_phandle(dev->of_node, + "qcom,ice", 0); if (!node) return NULL; pdev = of_find_device_by_node(node); if (!pdev) { dev_err(dev, "Cannot find device node %s\n", node->name); - ice = ERR_PTR(-EPROBE_DEFER); - goto out; + return ERR_PTR(-EPROBE_DEFER); } ice = platform_get_drvdata(pdev); @@ -308,8 +308,7 @@ struct qcom_ice *of_qcom_ice_get(struct device *dev) dev_err(dev, "Cannot get ice instance from %s\n", dev_name(&pdev->dev)); platform_device_put(pdev); - ice = ERR_PTR(-EPROBE_DEFER); - goto out; + return ERR_PTR(-EPROBE_DEFER); } ice->link = device_link_add(dev, &pdev->dev, DL_FLAG_AUTOREMOVE_SUPPLIER); @@ -321,9 +320,6 @@ struct qcom_ice *of_qcom_ice_get(struct device *dev) ice = ERR_PTR(-EINVAL); } -out: - of_node_put(node); - return ice; } EXPORT_SYMBOL_GPL(of_qcom_ice_get); From patchwork Tue Aug 13 13:09:50 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Krzysztof Kozlowski X-Patchwork-Id: 13762045 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from alsa0.perex.cz (alsa0.perex.cz [77.48.224.243]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id E9FC4C52D7B for ; 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Signed-off-by: Krzysztof Kozlowski --- drivers/soc/qcom/ocmem.c | 7 ++----- 1 file changed, 2 insertions(+), 5 deletions(-) diff --git a/drivers/soc/qcom/ocmem.c b/drivers/soc/qcom/ocmem.c index 6b6dd80cbc0f..ff8df7d75d6b 100644 --- a/drivers/soc/qcom/ocmem.c +++ b/drivers/soc/qcom/ocmem.c @@ -186,23 +186,20 @@ static void update_range(struct ocmem *ocmem, struct ocmem_buf *buf, struct ocmem *of_get_ocmem(struct device *dev) { struct platform_device *pdev; - struct device_node *devnode; struct ocmem *ocmem; - devnode = of_parse_phandle(dev->of_node, "sram", 0); + struct device_node *devnode __free(device_node) = of_parse_phandle(dev->of_node, + "sram", 0); if (!devnode || !devnode->parent) { dev_err(dev, "Cannot look up sram phandle\n"); - of_node_put(devnode); return ERR_PTR(-ENODEV); } pdev = of_find_device_by_node(devnode->parent); if (!pdev) { dev_err(dev, "Cannot find device node %s\n", devnode->name); - of_node_put(devnode); return ERR_PTR(-EPROBE_DEFER); } - of_node_put(devnode); 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no-senders; approved; emergency; loop; banned-address; member-moderation; header-match-alsa-devel.alsa-project.org-0; header-match-alsa-devel.alsa-project.org-1; nonmember-moderation; administrivia; implicit-dest; max-recipients; max-size; news-moderation; no-subject; digests; suspicious-header X-Mailman-Version: 3.3.9 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" Archived-At: List-Archive: List-Help: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: Obtain the device node reference with scoped/cleanup.h to reduce error handling and make the code a bit simpler. Signed-off-by: Krzysztof Kozlowski --- drivers/soc/qcom/qcom-pbs.c | 16 ++++++---------- 1 file changed, 6 insertions(+), 10 deletions(-) diff --git a/drivers/soc/qcom/qcom-pbs.c b/drivers/soc/qcom/qcom-pbs.c index 6af49b5060e5..77a70d3d0d0b 100644 --- a/drivers/soc/qcom/qcom-pbs.c +++ b/drivers/soc/qcom/qcom-pbs.c @@ -3,6 +3,7 @@ * Copyright (c) 2023 Qualcomm Innovation Center, Inc. All rights reserved. */ +#include #include #include #include @@ -148,11 +149,11 @@ EXPORT_SYMBOL_GPL(qcom_pbs_trigger_event); */ struct pbs_dev *get_pbs_client_device(struct device *dev) { - struct device_node *pbs_dev_node; struct platform_device *pdev; struct pbs_dev *pbs; - pbs_dev_node = of_parse_phandle(dev->of_node, "qcom,pbs", 0); + struct device_node *pbs_dev_node __free(device_node) = of_parse_phandle(dev->of_node, + "qcom,pbs", 0); if (!pbs_dev_node) { dev_err(dev, "Missing qcom,pbs property\n"); return ERR_PTR(-ENODEV); @@ -161,28 +162,23 @@ struct pbs_dev *get_pbs_client_device(struct device *dev) pdev = of_find_device_by_node(pbs_dev_node); if (!pdev) { dev_err(dev, "Unable to find PBS dev_node\n"); - pbs = ERR_PTR(-EPROBE_DEFER); - goto out; + return ERR_PTR(-EPROBE_DEFER); } pbs = platform_get_drvdata(pdev); if (!pbs) { dev_err(dev, "Cannot get pbs instance from %s\n", dev_name(&pdev->dev)); platform_device_put(pdev); - pbs = ERR_PTR(-EPROBE_DEFER); - goto out; + return ERR_PTR(-EPROBE_DEFER); } pbs->link = device_link_add(dev, &pdev->dev, DL_FLAG_AUTOREMOVE_SUPPLIER); if (!pbs->link) { dev_err(&pdev->dev, "Failed to create device link to consumer %s\n", dev_name(dev)); platform_device_put(pdev); - pbs = ERR_PTR(-EINVAL); - goto out; + return ERR_PTR(-EINVAL); } -out: - of_node_put(pbs_dev_node); return pbs; } EXPORT_SYMBOL_GPL(get_pbs_client_device); From patchwork Tue Aug 13 13:09:52 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Krzysztof Kozlowski X-Patchwork-Id: 13762048 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from alsa0.perex.cz (alsa0.perex.cz [77.48.224.243]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 152E9C52D7C for ; Tue, 13 Aug 2024 13:27:28 +0000 (UTC) Received: from alsa1.perex.cz (alsa1.perex.cz [207.180.221.201]) (using TLSv1.2 with cipher ADH-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by alsa0.perex.cz (Postfix) with ESMTPS id 0ADD42340; 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no-senders; approved; emergency; loop; banned-address; member-moderation; header-match-alsa-devel.alsa-project.org-0; header-match-alsa-devel.alsa-project.org-1; nonmember-moderation; administrivia; implicit-dest; max-recipients; max-size; news-moderation; no-subject; digests; suspicious-header X-Mailman-Version: 3.3.9 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" Archived-At: List-Archive: List-Help: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: Obtain the device node reference with scoped/cleanup.h to reduce error handling and make the code a bit simpler. Signed-off-by: Krzysztof Kozlowski --- drivers/soc/qcom/smp2p.c | 16 ++++------------ 1 file changed, 4 insertions(+), 12 deletions(-) diff --git a/drivers/soc/qcom/smp2p.c b/drivers/soc/qcom/smp2p.c index 4aa61b0f11ad..cefcbd61c628 100644 --- a/drivers/soc/qcom/smp2p.c +++ b/drivers/soc/qcom/smp2p.c @@ -539,7 +539,6 @@ static int smp2p_parse_ipc(struct qcom_smp2p *smp2p) static int qcom_smp2p_probe(struct platform_device *pdev) { struct smp2p_entry *entry; - struct device_node *node; struct qcom_smp2p *smp2p; const char *key; int irq; @@ -593,11 +592,10 @@ static int qcom_smp2p_probe(struct platform_device *pdev) if (ret < 0) goto release_mbox; - for_each_available_child_of_node(pdev->dev.of_node, node) { + for_each_available_child_of_node_scoped(pdev->dev.of_node, node) { entry = devm_kzalloc(&pdev->dev, sizeof(*entry), GFP_KERNEL); if (!entry) { ret = -ENOMEM; - of_node_put(node); goto unwind_interfaces; } @@ -605,25 +603,19 @@ static int qcom_smp2p_probe(struct platform_device *pdev) spin_lock_init(&entry->lock); ret = of_property_read_string(node, "qcom,entry-name", &entry->name); - if (ret < 0) { - of_node_put(node); + if (ret < 0) goto unwind_interfaces; - } if (of_property_read_bool(node, "interrupt-controller")) { ret = qcom_smp2p_inbound_entry(smp2p, entry, node); - if (ret < 0) { - of_node_put(node); + if (ret < 0) goto unwind_interfaces; - } list_add(&entry->node, &smp2p->inbound); } else { ret = qcom_smp2p_outbound_entry(smp2p, entry, node); - if (ret < 0) { - of_node_put(node); + if (ret < 0) goto unwind_interfaces; - } list_add(&entry->node, &smp2p->outbound); }