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charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20240823-cleanup-h-guard-pm-domain-v1-1-8320722eaf39@linaro.org> References: <20240823-cleanup-h-guard-pm-domain-v1-0-8320722eaf39@linaro.org> In-Reply-To: <20240823-cleanup-h-guard-pm-domain-v1-0-8320722eaf39@linaro.org> To: Ulf Hansson , Heiko Stuebner , Shawn Guo , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam , Bjorn Andersson , Konrad Dybcio , Geert Uytterhoeven , Magnus Damm Cc: linux-pm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org, linux-kernel@vger.kernel.org, imx@lists.linux.dev, linux-arm-msm@vger.kernel.org, linux-renesas-soc@vger.kernel.org, Krzysztof Kozlowski X-Mailer: b4 0.14.1 X-Developer-Signature: v=1; a=openpgp-sha256; l=3370; i=krzysztof.kozlowski@linaro.org; h=from:subject:message-id; bh=iAvSFaGsUDYZxq4WQx5Z23ymXzI0A4MTtwCWNichnqc=; b=owEBbQKS/ZANAwAKAcE3ZuaGi4PXAcsmYgBmyIXEfKtBsZmUp5ta2YLZwS3sUTURaeY/K91+s GdqnZCFccqJAjMEAAEKAB0WIQTd0mIoPREbIztuuKjBN2bmhouD1wUCZsiFxAAKCRDBN2bmhouD 1/miD/9sqb/VfS0E5eSdkqMTP9BUn0QyIpD/1zkhakVYkcdbfbRO1J4fbIQy6ivtt22yqA0cF/E dapzg65Y/ms6uu6SOMeDn8A3Ux/v0H11tSSsjxwPIUvshnIBtSpUICJ43/aT7HrB1AZ8KXj7303 fjKLWh0M/kXCNLEmgmnaZla7eT5SyWxL86w7s/LmQVmf/v9x6481XcJMxvKFTiyulEWiMLl7O39 SM/1GdybwLP4Mrwl2CO4D02fr4QaUP6pwp5yfKLSVVJcqT7ojS6mnDtvAsmUzfy5v9vGvEdjZf4 XcGVejBE/gQHe+SDiyCUztR+2Alc2i59HHAMvPTl+E3TRLY0IeY1J71Qr0RIASGsYrwJa2lv6+w eou5bPoQBuM2UY3PWz8wRJdOlZlN0ppHYZrz89L57/U87bW/iREdkNPk9C9EkajVT3ZTsopV7Ch QuIh63mZ00thXJ68Yekopv1G+3Jyldicvc1pnAAmcmNk9/wIDdjN+pkGTWXgjX2TapOChOus7zI YlfIvKyDakxpFuy0n/iCLdXHrHEhSzRhci7v65ixuLvU3R6kHc0ltTlQh5QsKtYMF7m7aIVWfAy x6UXjngSQQY2qVflmHpNw+XsYM/7XNaeScdPr+P+xsJbEPVcmANtg2SAroolfyRltcIAgh3rngg yBjt0SYdMpyHcZA== X-Developer-Key: i=krzysztof.kozlowski@linaro.org; a=openpgp; fpr=9BD07E0E0C51F8D59677B7541B93437D3B41629B Use scoped for_each_available_child_of_node_scoped() and for_each_child_of_node_scoped() when iterating over device nodes to make code a bit simpler. Signed-off-by: Krzysztof Kozlowski Reviewed-by: Jonathan Cameron --- drivers/pmdomain/rockchip/pm-domains.c | 20 ++++++-------------- 1 file changed, 6 insertions(+), 14 deletions(-) diff --git a/drivers/pmdomain/rockchip/pm-domains.c b/drivers/pmdomain/rock= chip/pm-domains.c index 64b4d7120d83..5679ad336a11 100644 --- a/drivers/pmdomain/rockchip/pm-domains.c +++ b/drivers/pmdomain/rockchip/pm-domains.c @@ -804,11 +804,10 @@ static void rockchip_configure_pd_cnt(struct rockchip= _pmu *pmu, static int rockchip_pm_add_subdomain(struct rockchip_pmu *pmu, struct device_node *parent) { - struct device_node *np; struct generic_pm_domain *child_domain, *parent_domain; int error; =20 - for_each_child_of_node(parent, np) { + for_each_child_of_node_scoped(parent, np) { u32 idx; =20 error =3D of_property_read_u32(parent, "reg", &idx); @@ -816,7 +815,7 @@ static int rockchip_pm_add_subdomain(struct rockchip_pm= u *pmu, dev_err(pmu->dev, "%pOFn: failed to retrieve domain id (reg): %d\n", parent, error); - goto err_out; + return error; } parent_domain =3D pmu->genpd_data.domains[idx]; =20 @@ -824,7 +823,7 @@ static int rockchip_pm_add_subdomain(struct rockchip_pm= u *pmu, if (error) { dev_err(pmu->dev, "failed to handle node %pOFn: %d\n", np, error); - goto err_out; + return error; } =20 error =3D of_property_read_u32(np, "reg", &idx); @@ -832,7 +831,7 @@ static int rockchip_pm_add_subdomain(struct rockchip_pm= u *pmu, dev_err(pmu->dev, "%pOFn: failed to retrieve domain id (reg): %d\n", np, error); - goto err_out; + return error; } child_domain =3D pmu->genpd_data.domains[idx]; =20 @@ -840,7 +839,7 @@ static int rockchip_pm_add_subdomain(struct rockchip_pm= u *pmu, if (error) { dev_err(pmu->dev, "%s failed to add subdomain %s: %d\n", parent_domain->name, child_domain->name, error); - goto err_out; + return error; } else { dev_dbg(pmu->dev, "%s add subdomain: %s\n", parent_domain->name, child_domain->name); @@ -850,17 +849,12 @@ static int rockchip_pm_add_subdomain(struct rockchip_= pmu *pmu, } =20 return 0; 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a=openpgp; fpr=9BD07E0E0C51F8D59677B7541B93437D3B41629B Simplify error handling (smaller error handling) over locks with guard(). Signed-off-by: Krzysztof Kozlowski Reviewed-by: Jonathan Cameron --- drivers/pmdomain/rockchip/pm-domains.c | 5 +---- 1 file changed, 1 insertion(+), 4 deletions(-) diff --git a/drivers/pmdomain/rockchip/pm-domains.c b/drivers/pmdomain/rock= chip/pm-domains.c index 5679ad336a11..538dde58d924 100644 --- a/drivers/pmdomain/rockchip/pm-domains.c +++ b/drivers/pmdomain/rockchip/pm-domains.c @@ -910,7 +910,7 @@ static int rockchip_pm_domain_probe(struct platform_dev= ice *pdev) * Prevent any rockchip_pmu_block() from racing with the remainder of * setup (clocks, register initialization). */ - mutex_lock(&dmc_pmu_mutex); + guard(mutex)(&dmc_pmu_mutex); =20 for_each_available_child_of_node_scoped(np, node) { error =3D rockchip_pm_add_one_domain(pmu, node); @@ -943,13 +943,10 @@ static int rockchip_pm_domain_probe(struct platform_d= evice *pdev) if (!WARN_ON_ONCE(dmc_pmu)) dmc_pmu =3D pmu; =20 - mutex_unlock(&dmc_pmu_mutex); - return 0; =20 err_out: rockchip_pm_domain_cleanup(pmu); - mutex_unlock(&dmc_pmu_mutex); 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charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20240823-cleanup-h-guard-pm-domain-v1-3-8320722eaf39@linaro.org> References: <20240823-cleanup-h-guard-pm-domain-v1-0-8320722eaf39@linaro.org> In-Reply-To: <20240823-cleanup-h-guard-pm-domain-v1-0-8320722eaf39@linaro.org> To: Ulf Hansson , Heiko Stuebner , Shawn Guo , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam , Bjorn Andersson , Konrad Dybcio , Geert Uytterhoeven , Magnus Damm Cc: linux-pm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org, linux-kernel@vger.kernel.org, imx@lists.linux.dev, linux-arm-msm@vger.kernel.org, linux-renesas-soc@vger.kernel.org, Krzysztof Kozlowski X-Mailer: b4 0.14.1 X-Developer-Signature: v=1; a=openpgp-sha256; l=1900; i=krzysztof.kozlowski@linaro.org; h=from:subject:message-id; bh=6qWKewqo7/bxcFlu9EkD12hoXBrxu7JPlLAdc+zUmSI=; b=owEBbQKS/ZANAwAKAcE3ZuaGi4PXAcsmYgBmyIXGryEowWY/W/NRlv0M7ukHF8AYtODYM2+yB /lAA0KMckOJAjMEAAEKAB0WIQTd0mIoPREbIztuuKjBN2bmhouD1wUCZsiFxgAKCRDBN2bmhouD 18Q2EACKdgYqni98KR6DjkFKNTDdlnmQiPfC/qbDuSnGBnEHXyalbvgwz/aMLrsZ3GSBujZsFhU r7C2rdmokdifJOlhbP2COkCyb4D2KLy+EMJbLpqxQck74O3r7gLnBLe/Mt0e8RstNveD9o04L8N IMeUE8J3ASsB+IDsZ3KaFzO5+0q3PzFNPLkU0//h6a1ecdI7hDQlzv3moQkVjP5c1pnpd6prkbD n4lXn80mN4rSPMzRgIau/BXt3rxEOk4raqNjnWfcnkYcTpmz1LsKkN/ELHKd4ocNArnEhMB8jNU c/7vsNUOZPwLCJftpXX3fIbEOD6gN6khFFtkDJprS5po4aAFbSTwgvdDXnpqz8PA9DTMXkCSs9U xgUaLY1eJcIqudLRYBSSUIpnn2MAQjNi0jPxfQAkXBuMKJoC2pBMs7sZPzOGkcECbGH6BLqG1cY 26ZXqF9QACoOltgPRiNpO+mcx6ugDyvzoOF4kfXn2aN75iPIcbP+iJdJyyeYa9WoTo/juGjFdZC gq+M5hrVm68lUiJVb48Izn2LMSc8oAcXs2Kcu8XrNJcWzpnwYvk7cMQro4V/7xv0xTh9wQYodP5 AtRTAd0er+83B7fur7r3B5K6piGdH50PPRVLIy36uZPybik94FX61eQrBhk5oNtnT673W6jg7L6 eiFD4ui7kSmU3xA== X-Developer-Key: i=krzysztof.kozlowski@linaro.org; a=openpgp; fpr=9BD07E0E0C51F8D59677B7541B93437D3B41629B 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/pmdomain/imx/gpc.c | 14 ++++---------- 1 file changed, 4 insertions(+), 10 deletions(-) diff --git a/drivers/pmdomain/imx/gpc.c b/drivers/pmdomain/imx/gpc.c index 9517cce93d8a..80a4dcc77199 100644 --- a/drivers/pmdomain/imx/gpc.c +++ b/drivers/pmdomain/imx/gpc.c @@ -455,7 +455,6 @@ static int imx_gpc_probe(struct platform_device *pdev) } else { struct imx_pm_domain *domain; struct platform_device *pd_pdev; - struct device_node *np; struct clk *ipg_clk; unsigned int ipg_rate_mhz; int domain_index; @@ -465,28 +464,24 @@ static int imx_gpc_probe(struct platform_device *pdev) return PTR_ERR(ipg_clk); ipg_rate_mhz =3D clk_get_rate(ipg_clk) / 1000000; =20 - for_each_child_of_node(pgc_node, np) { + for_each_child_of_node_scoped(pgc_node, np) { ret =3D of_property_read_u32(np, "reg", &domain_index); - if (ret) { - of_node_put(np); + if (ret) return ret; - } + if (domain_index >=3D of_id_data->num_domains) continue; =20 pd_pdev =3D platform_device_alloc("imx-pgc-power-domain", domain_index); 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a=openpgp; fpr=9BD07E0E0C51F8D59677B7541B93437D3B41629B 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/pmdomain/imx/gpcv2.c | 8 ++------ 1 file changed, 2 insertions(+), 6 deletions(-) diff --git a/drivers/pmdomain/imx/gpcv2.c b/drivers/pmdomain/imx/gpcv2.c index 856eaac0ec14..963d61c5af6d 100644 --- a/drivers/pmdomain/imx/gpcv2.c +++ b/drivers/pmdomain/imx/gpcv2.c @@ -1458,7 +1458,7 @@ static int imx_gpcv2_probe(struct platform_device *pd= ev) .max_register =3D SZ_4K, }; struct device *dev =3D &pdev->dev; - struct device_node *pgc_np, *np; + struct device_node *pgc_np; struct regmap *regmap; void __iomem *base; int ret; @@ -1480,7 +1480,7 @@ static int imx_gpcv2_probe(struct platform_device *pd= ev) return ret; } =20 - for_each_child_of_node(pgc_np, np) { + for_each_child_of_node_scoped(pgc_np, np) { struct platform_device *pd_pdev; struct imx_pgc_domain *domain; u32 domain_index; @@ -1491,7 +1491,6 @@ static int imx_gpcv2_probe(struct platform_device *pd= ev) ret =3D of_property_read_u32(np, "reg", &domain_index); if (ret) { dev_err(dev, "Failed to read 'reg' property\n"); 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a=openpgp; fpr=9BD07E0E0C51F8D59677B7541B93437D3B41629B Use dev_err_probe() to make defer code handling simpler. Signed-off-by: Krzysztof Kozlowski Reviewed-by: Konrad Dybcio --- drivers/pmdomain/qcom/cpr.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/drivers/pmdomain/qcom/cpr.c b/drivers/pmdomain/qcom/cpr.c index c64e84a27cc7..1bef89712188 100644 --- a/drivers/pmdomain/qcom/cpr.c +++ b/drivers/pmdomain/qcom/cpr.c @@ -1470,9 +1470,8 @@ static int cpr_pd_attach_dev(struct generic_pm_domain= *domain, */ drv->cpu_clk =3D devm_clk_get(dev, NULL); if (IS_ERR(drv->cpu_clk)) { - ret =3D PTR_ERR(drv->cpu_clk); - if (ret !=3D -EPROBE_DEFER) - dev_err(drv->dev, "could not get cpu clk: %d\n", ret); + ret =3D dev_err_probe(drv->dev, PTR_ERR(drv->cpu_clk), + "could not get cpu clk\n"); goto unlock; } drv->attached_cpu_dev =3D dev; --=20 2.43.0 From nobody Tue Feb 10 00:44:49 2026 Received: from mail-lf1-f50.google.com (mail-lf1-f50.google.com [209.85.167.50]) (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 8432D1885B0 for ; 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a=openpgp; fpr=9BD07E0E0C51F8D59677B7541B93437D3B41629B Simplify error handling (less gotos) over locks with guard(). Signed-off-by: Krzysztof Kozlowski Reviewed-by: Konrad Dybcio --- drivers/pmdomain/qcom/cpr.c | 57 ++++++++++++++++++-----------------------= ---- 1 file changed, 23 insertions(+), 34 deletions(-) diff --git a/drivers/pmdomain/qcom/cpr.c b/drivers/pmdomain/qcom/cpr.c index 1bef89712188..a616a3ec3d46 100644 --- a/drivers/pmdomain/qcom/cpr.c +++ b/drivers/pmdomain/qcom/cpr.c @@ -4,6 +4,7 @@ * Copyright (c) 2019, Linaro Limited */ =20 +#include #include #include #include @@ -747,9 +748,9 @@ static int cpr_set_performance_state(struct generic_pm_= domain *domain, struct cpr_drv *drv =3D container_of(domain, struct cpr_drv, pd); struct corner *corner, *end; enum voltage_change_dir dir; - int ret =3D 0, new_uV; + int ret, new_uV; =20 - mutex_lock(&drv->lock); + guard(mutex)(&drv->lock); =20 dev_dbg(drv->dev, "%s: setting perf state: %u (prev state: %u)\n", __func__, state, cpr_get_cur_perf_state(drv)); @@ -760,10 +761,8 @@ static int cpr_set_performance_state(struct generic_pm= _domain *domain, */ corner =3D drv->corners + state - 1; end =3D &drv->corners[drv->num_corners - 1]; - if (corner > end || corner < drv->corners) { - ret =3D -EINVAL; - goto unlock; - } + if (corner > end || corner < drv->corners) + return -EINVAL; =20 /* Determine direction */ if (drv->corner > corner) @@ -783,7 +782,7 @@ static int cpr_set_performance_state(struct generic_pm_= domain *domain, =20 ret =3D cpr_scale_voltage(drv, corner, new_uV, dir); if (ret) - goto unlock; + return ret; =20 if (cpr_is_allowed(drv)) { cpr_irq_clr(drv); @@ -794,10 +793,7 @@ static int cpr_set_performance_state(struct generic_pm= _domain *domain, =20 drv->corner =3D corner; =20 -unlock: - mutex_unlock(&drv->lock); - - return ret; + return 0; } =20 static int @@ -1443,9 +1439,9 @@ static int cpr_pd_attach_dev(struct generic_pm_domain= *domain, { struct cpr_drv *drv =3D container_of(domain, struct cpr_drv, pd); const struct acc_desc *acc_desc =3D drv->acc_desc; - int ret =3D 0; + int ret; =20 - mutex_lock(&drv->lock); + guard(mutex)(&drv->lock); =20 dev_dbg(drv->dev, "attach callback for: %s\n", dev_name(dev)); =20 @@ -1457,7 +1453,7 @@ static int cpr_pd_attach_dev(struct generic_pm_domain= *domain, * additional initialization when further CPUs get attached. */ if (drv->attached_cpu_dev) - goto unlock; + return 0; =20 /* * cpr_scale_voltage() requires the direction (if we are changing @@ -1469,11 +1465,10 @@ static int cpr_pd_attach_dev(struct generic_pm_doma= in *domain, * the first time cpr_set_performance_state() is called. */ drv->cpu_clk =3D devm_clk_get(dev, NULL); - if (IS_ERR(drv->cpu_clk)) { - ret =3D dev_err_probe(drv->dev, PTR_ERR(drv->cpu_clk), - "could not get cpu clk\n"); - goto unlock; - } + if (IS_ERR(drv->cpu_clk)) + return dev_err_probe(drv->dev, PTR_ERR(drv->cpu_clk), + "could not get cpu clk\n"); + drv->attached_cpu_dev =3D dev; =20 dev_dbg(drv->dev, "using cpu clk from: %s\n", @@ -1490,42 +1485,39 @@ static int cpr_pd_attach_dev(struct generic_pm_doma= in *domain, ret =3D dev_pm_opp_get_opp_count(&drv->pd.dev); if (ret < 0) { dev_err(drv->dev, "could not get OPP count\n"); - goto unlock; + return ret; } drv->num_corners =3D ret; =20 if (drv->num_corners < 2) { dev_err(drv->dev, "need at least 2 OPPs to use CPR\n"); - ret =3D -EINVAL; - goto unlock; + return -EINVAL; } =20 drv->corners =3D devm_kcalloc(drv->dev, drv->num_corners, sizeof(*drv->corners), GFP_KERNEL); - if (!drv->corners) { - ret =3D -ENOMEM; - goto unlock; - } + if (!drv->corners) + return -ENOMEM; =20 ret =3D cpr_corner_init(drv); if (ret) - goto unlock; + return ret; =20 cpr_set_loop_allowed(drv); =20 ret =3D cpr_init_parameters(drv); if (ret) - goto unlock; + return ret; =20 /* Configure CPR HW but keep it disabled */ ret =3D cpr_config(drv); if (ret) - goto unlock; + return ret; =20 ret =3D cpr_find_initial_corner(drv); if (ret) - goto unlock; + return ret; =20 if (acc_desc->config) regmap_multi_reg_write(drv->tcsr, acc_desc->config, @@ -1540,10 +1532,7 @@ static int cpr_pd_attach_dev(struct generic_pm_domai= n *domain, dev_info(drv->dev, "driver initialized with %u OPPs\n", drv->num_corners); 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a=openpgp; fpr=9BD07E0E0C51F8D59677B7541B93437D3B41629B Simplify error handling (less gotos) over locks with guard(). Signed-off-by: Krzysztof Kozlowski Reviewed-by: Konrad Dybcio --- drivers/pmdomain/qcom/rpmhpd.c | 11 +++++------ 1 file changed, 5 insertions(+), 6 deletions(-) diff --git a/drivers/pmdomain/qcom/rpmhpd.c b/drivers/pmdomain/qcom/rpmhpd.c index d2cb4271a1ca..65505e1e2219 100644 --- a/drivers/pmdomain/qcom/rpmhpd.c +++ b/drivers/pmdomain/qcom/rpmhpd.c @@ -1,6 +1,7 @@ // SPDX-License-Identifier: GPL-2.0 /* Copyright (c) 2018, The Linux Foundation. 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a=openpgp; fpr=9BD07E0E0C51F8D59677B7541B93437D3B41629B Simplify error handling (less gotos) over locks with guard(). Signed-off-by: Krzysztof Kozlowski Reviewed-by: Konrad Dybcio --- drivers/pmdomain/qcom/rpmpd.c | 20 ++++++-------------- 1 file changed, 6 insertions(+), 14 deletions(-) diff --git a/drivers/pmdomain/qcom/rpmpd.c b/drivers/pmdomain/qcom/rpmpd.c index 5e6280b4cf70..0be6b3026e3a 100644 --- a/drivers/pmdomain/qcom/rpmpd.c +++ b/drivers/pmdomain/qcom/rpmpd.c @@ -1,6 +1,7 @@ // SPDX-License-Identifier: GPL-2.0 /* Copyright (c) 2017-2018, The Linux Foundation. All rights reserved. */ =20 +#include #include #include #include @@ -1024,20 +1025,17 @@ static int rpmpd_power_on(struct generic_pm_domain = *domain) int ret; struct rpmpd *pd =3D domain_to_rpmpd(domain); =20 - mutex_lock(&rpmpd_lock); + guard(mutex)(&rpmpd_lock); =20 ret =3D rpmpd_send_enable(pd, true); if (ret) - goto out; + return ret; =20 pd->enabled =3D true; =20 if (pd->corner) ret =3D rpmpd_aggregate_corner(pd); =20 -out: - mutex_unlock(&rpmpd_lock); - return ret; } =20 @@ -1060,27 +1058,21 @@ static int rpmpd_power_off(struct generic_pm_domain= *domain) static int rpmpd_set_performance(struct generic_pm_domain *domain, unsigned int state) { - int ret =3D 0; struct rpmpd *pd =3D domain_to_rpmpd(domain); =20 if (state > pd->max_state) state =3D pd->max_state; =20 - mutex_lock(&rpmpd_lock); + guard(mutex)(&rpmpd_lock); =20 pd->corner =3D state; =20 /* Always send updates for vfc and vfl */ if (!pd->enabled && pd->key !=3D cpu_to_le32(KEY_FLOOR_CORNER) && pd->key !=3D cpu_to_le32(KEY_FLOOR_LEVEL)) - goto out; 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Fri, 23 Aug 2024 05:51:42 -0700 (PDT) From: Krzysztof Kozlowski Date: Fri, 23 Aug 2024 14:51:13 +0200 Subject: [PATCH 09/10] pmdomain: renesas: rcar-gen4-sysc: Use scoped device node handling to simplify error paths Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20240823-cleanup-h-guard-pm-domain-v1-9-8320722eaf39@linaro.org> References: <20240823-cleanup-h-guard-pm-domain-v1-0-8320722eaf39@linaro.org> In-Reply-To: <20240823-cleanup-h-guard-pm-domain-v1-0-8320722eaf39@linaro.org> To: Ulf Hansson , Heiko Stuebner , Shawn Guo , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam , Bjorn Andersson , Konrad Dybcio , Geert Uytterhoeven , Magnus Damm Cc: linux-pm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org, linux-kernel@vger.kernel.org, imx@lists.linux.dev, linux-arm-msm@vger.kernel.org, linux-renesas-soc@vger.kernel.org, Krzysztof Kozlowski X-Mailer: b4 0.14.1 X-Developer-Signature: v=1; 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a=openpgp; fpr=9BD07E0E0C51F8D59677B7541B93437D3B41629B 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/pmdomain/renesas/rcar-gen4-sysc.c | 26 ++++++++++---------------- 1 file changed, 10 insertions(+), 16 deletions(-) diff --git a/drivers/pmdomain/renesas/rcar-gen4-sysc.c b/drivers/pmdomain/r= enesas/rcar-gen4-sysc.c index 66409cff2083..4ca85dbdedc2 100644 --- a/drivers/pmdomain/renesas/rcar-gen4-sysc.c +++ b/drivers/pmdomain/renesas/rcar-gen4-sysc.c @@ -6,6 +6,7 @@ */ =20 #include +#include #include #include #include @@ -303,12 +304,12 @@ static int __init rcar_gen4_sysc_pd_init(void) const struct rcar_gen4_sysc_info *info; const struct of_device_id *match; struct rcar_gen4_pm_domains *domains; - struct device_node *np; void __iomem *base; unsigned int i; int error; =20 - np =3D of_find_matching_node_and_match(NULL, rcar_gen4_sysc_matches, &mat= ch); + struct device_node *np __free(device_node) =3D + of_find_matching_node_and_match(NULL, rcar_gen4_sysc_matches, &match); if (!np) return -ENODEV; =20 @@ -317,17 +318,14 @@ static int __init rcar_gen4_sysc_pd_init(void) base =3D of_iomap(np, 0); if (!base) { pr_warn("%pOF: Cannot map regs\n", np); - error =3D -ENOMEM; - goto out_put; + return -ENOMEM; } =20 rcar_gen4_sysc_base =3D base; =20 domains =3D kzalloc(sizeof(*domains), GFP_KERNEL); - if (!domains) { - error =3D -ENOMEM; - goto out_put; - } + if (!domains) + return -ENOMEM; =20 domains->onecell_data.domains =3D domains->domains; domains->onecell_data.num_domains =3D ARRAY_SIZE(domains->domains); @@ -345,10 +343,8 @@ static int __init rcar_gen4_sysc_pd_init(void) =20 n =3D strlen(area->name) + 1; pd =3D kzalloc(sizeof(*pd) + n, GFP_KERNEL); - if (!pd) { - error =3D -ENOMEM; - goto out_put; - } + if (!pd) + return -ENOMEM; =20 memcpy(pd->name, area->name, n); pd->genpd.name =3D pd->name; @@ -357,7 +353,7 @@ static int __init rcar_gen4_sysc_pd_init(void) =20 error =3D rcar_gen4_sysc_pd_setup(pd); if (error) - goto out_put; + return error; =20 domains->domains[area->pdr] =3D &pd->genpd; =20 @@ -369,14 +365,12 @@ static int __init rcar_gen4_sysc_pd_init(void) if (error) { pr_warn("Failed to add PM subdomain %s to parent %u\n", area->name, area->parent); 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charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20240823-cleanup-h-guard-pm-domain-v1-10-8320722eaf39@linaro.org> References: <20240823-cleanup-h-guard-pm-domain-v1-0-8320722eaf39@linaro.org> In-Reply-To: <20240823-cleanup-h-guard-pm-domain-v1-0-8320722eaf39@linaro.org> To: Ulf Hansson , Heiko Stuebner , Shawn Guo , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam , Bjorn Andersson , Konrad Dybcio , Geert Uytterhoeven , Magnus Damm Cc: linux-pm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org, linux-kernel@vger.kernel.org, imx@lists.linux.dev, linux-arm-msm@vger.kernel.org, linux-renesas-soc@vger.kernel.org, Krzysztof Kozlowski X-Mailer: b4 0.14.1 X-Developer-Signature: v=1; a=openpgp-sha256; l=3056; i=krzysztof.kozlowski@linaro.org; h=from:subject:message-id; bh=RaCHoWfcvN19DBMmkgIRc0NGUjytTpFgVMcU13mcxgo=; b=owEBbQKS/ZANAwAKAcE3ZuaGi4PXAcsmYgBmyIXNR2zayhDCmXFhzQ1RKmq8aC4JQfASOX82l qQyhlx44UOJAjMEAAEKAB0WIQTd0mIoPREbIztuuKjBN2bmhouD1wUCZsiFzQAKCRDBN2bmhouD 1xL8D/9RUFSYlgRZQEabYs+Zlod9oIJejL78n+4Ll7xzEa+aucx3mi/5XlXocpJxNV+gOzHmnL5 pTAKjf9vr2rrSCFpdxWqcebEDpOfdp3FhZVpBNUc1h/OP5bjr184cjhi7i9TuCDo/iVdB0pUXdN M76MCTdDAD/bgYmwRgVMQpXF1J769uZTGjSJmi58B0VRQhOhJgjmrSLchp8/NAEnWPwerPXMCkm eB714yX5DLHHI+JfhnayFx/N2/E534xyEO1HvsBvfioJrdNphfVPfe4xI/qOHupvYmd5t+/9Ghd in1T0ooZnRBOqqF/8HZO+fb5oZPBETF2hHD6X7fMDmFhHDfW6lReeoDHG+ru1B6TG9NLvU0x98u wrOOoAXHWLuo2AT/cJjkItEh9Q4T0t0HZ4GscFMohXEJ+GKyoOgFKiAgIBfVgaeJ9bfTpT6teuW zljMa7caswrosPMTvLgRiWDI6NIuUAP1HdpDhMSMerJwDdR3mM18CodSRTqDknlhCH8Tff/UyzE YQqB1Shvtr1g7dD8+6Ajdjhu72i65o1lOBEcq/i6nT6QV3efKKqIzTcF1WoXBmdjq5ZQQyxC71v yN682xplaXESoBHsCxOVmTmEK5SdClLG2XTLvLhB2ErFuaqOK91wtibYaqRUCEPcNvHLuNxW/fR 7csJsV6ahkbU4zA== X-Developer-Key: i=krzysztof.kozlowski@linaro.org; a=openpgp; fpr=9BD07E0E0C51F8D59677B7541B93437D3B41629B 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/pmdomain/renesas/rcar-sysc.c | 28 +++++++++++----------------- 1 file changed, 11 insertions(+), 17 deletions(-) diff --git a/drivers/pmdomain/renesas/rcar-sysc.c b/drivers/pmdomain/renesa= s/rcar-sysc.c index b99326917330..da169eed638c 100644 --- a/drivers/pmdomain/renesas/rcar-sysc.c +++ b/drivers/pmdomain/renesas/rcar-sysc.c @@ -6,6 +6,7 @@ * Copyright (C) 2015-2017 Glider bvba */ =20 +#include #include #include #include @@ -348,12 +349,12 @@ static int __init rcar_sysc_pd_init(void) const struct rcar_sysc_info *info; const struct of_device_id *match; struct rcar_pm_domains *domains; - struct device_node *np; void __iomem *base; unsigned int i; int error; =20 - np =3D of_find_matching_node_and_match(NULL, rcar_sysc_matches, &match); + struct device_node *np __free(device_node) =3D + of_find_matching_node_and_match(NULL, rcar_sysc_matches, &match); if (!np) return -ENODEV; =20 @@ -362,7 +363,7 @@ static int __init rcar_sysc_pd_init(void) if (info->init) { error =3D info->init(); if (error) - goto out_put; + return error; } =20 has_cpg_mstp =3D of_find_compatible_node(NULL, NULL, @@ -371,8 +372,7 @@ static int __init rcar_sysc_pd_init(void) base =3D of_iomap(np, 0); if (!base) { pr_warn("%pOF: Cannot map regs\n", np); - error =3D -ENOMEM; - goto out_put; + return -ENOMEM; } =20 rcar_sysc_base =3D base; @@ -382,10 +382,8 @@ static int __init rcar_sysc_pd_init(void) rcar_sysc_extmask_val =3D info->extmask_val; =20 domains =3D kzalloc(sizeof(*domains), GFP_KERNEL); - if (!domains) { - error =3D -ENOMEM; - goto out_put; - } + if (!domains) + return -ENOMEM; =20 domains->onecell_data.domains =3D domains->domains; domains->onecell_data.num_domains =3D ARRAY_SIZE(domains->domains); @@ -403,10 +401,8 @@ static int __init rcar_sysc_pd_init(void) =20 n =3D strlen(area->name) + 1; pd =3D kzalloc(sizeof(*pd) + n, GFP_KERNEL); - if (!pd) { - error =3D -ENOMEM; - goto out_put; - } + if (!pd) + return -ENOMEM; =20 memcpy(pd->name, area->name, n); pd->genpd.name =3D pd->name; @@ -417,7 +413,7 @@ static int __init rcar_sysc_pd_init(void) =20 error =3D rcar_sysc_pd_setup(pd); if (error) - goto out_put; + return error; =20 domains->domains[area->isr_bit] =3D &pd->genpd; =20 @@ -429,7 +425,7 @@ static int __init rcar_sysc_pd_init(void) if (error) { pr_warn("Failed to add PM subdomain %s to parent %u\n", area->name, area->parent); - goto out_put; + return error; } } =20 @@ -437,8 +433,6 @@ static int __init rcar_sysc_pd_init(void) if (!error) fwnode_dev_initialized(of_fwnode_handle(np), true); =20 -out_put: - of_node_put(np); return error; } early_initcall(rcar_sysc_pd_init); --=20 2.43.0