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Fri, 23 Aug 2024 05:51:41 -0700 (PDT) Received: from [127.0.1.1] ([178.197.222.82]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-a868f4f384bsm255931666b.192.2024.08.23.05.51.39 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 23 Aug 2024 05:51:40 -0700 (PDT) From: Krzysztof Kozlowski Date: Fri, 23 Aug 2024 14:51:12 +0200 Subject: [PATCH 08/10] pmdomain: qcom: rpmpd: Simplify locking with guard() Precedence: bulk X-Mailing-List: linux-pm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20240823-cleanup-h-guard-pm-domain-v1-8-8320722eaf39@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 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. */ +#include #include #include #include @@ -1024,20 +1025,17 @@ static int rpmpd_power_on(struct generic_pm_domain *domain) int ret; struct rpmpd *pd = domain_to_rpmpd(domain); - mutex_lock(&rpmpd_lock); + guard(mutex)(&rpmpd_lock); ret = rpmpd_send_enable(pd, true); if (ret) - goto out; + return ret; pd->enabled = true; if (pd->corner) ret = rpmpd_aggregate_corner(pd); -out: - mutex_unlock(&rpmpd_lock); - return ret; } @@ -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 = 0; struct rpmpd *pd = domain_to_rpmpd(domain); if (state > pd->max_state) state = pd->max_state; - mutex_lock(&rpmpd_lock); + guard(mutex)(&rpmpd_lock); pd->corner = state; /* Always send updates for vfc and vfl */ if (!pd->enabled && pd->key != cpu_to_le32(KEY_FLOOR_CORNER) && pd->key != cpu_to_le32(KEY_FLOOR_LEVEL)) - goto out; + return 0; - ret = rpmpd_aggregate_corner(pd); - -out: - mutex_unlock(&rpmpd_lock); - - return ret; + return rpmpd_aggregate_corner(pd); } static int rpmpd_probe(struct platform_device *pdev)