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Mon, 09 Dec 2024 04:24:14 -0800 (PST) From: Krzysztof Kozlowski Date: Mon, 09 Dec 2024 13:24:05 +0100 Subject: [PATCH RESEND 2/3] clk: qcom: smd-rpm: simplify locking with guard() 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: <20241209-cleanup-h-guard-clk-qcom-v1-2-b1077540230c@linaro.org> References: <20241209-cleanup-h-guard-clk-qcom-v1-0-b1077540230c@linaro.org> In-Reply-To: <20241209-cleanup-h-guard-clk-qcom-v1-0-b1077540230c@linaro.org> To: Bjorn Andersson , Michael Turquette , Stephen Boyd Cc: linux-arm-msm@vger.kernel.org, linux-clk@vger.kernel.org, linux-kernel@vger.kernel.org, Krzysztof Kozlowski X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=openpgp-sha256; l=2526; i=krzysztof.kozlowski@linaro.org; h=from:subject:message-id; bh=rkMjCrwS1+wByjVOGZBOyBmwHcPRefAACRVZAjVFMrg=; b=owEBbQKS/ZANAwAKAcE3ZuaGi4PXAcsmYgBnVuFpiHvV0uVRDjZL66G52Y9rZuBpcDh97yVqm 7VCNFzDmjqJAjMEAAEKAB0WIQTd0mIoPREbIztuuKjBN2bmhouD1wUCZ1bhaQAKCRDBN2bmhouD 1z6bEACDJRMV3tKG8OzJzEzGyfz0lOZpMOl3jN/tTBoHX1ttuGWTy4ndNdqgrS10DEBZX6AukHR 2RkvqWkTyKKdNzNQuzOUVZceVDzp6+14dJh8OmLv9rh3T1CybD01NWxDyX9E7dHwpzdzjKuOzik ysttIokEqGs7IBZ/l/nokgkJYYEd29LH5YirY5+WRuNafy79CfiPlh6J+BUxTMaw+qQuWFmoD4t PQFyq2OQiBrgTYYxqsxrT4JmK2wXe6+MD2E7A6hE6VJdr1O23cjjMVX3b6+Y0+zZbP6h7VO6cUc VyQzxXWG70zOEUW0ncp8VxGy836HsZoZT6XQuxBfOW+3dq2jEzkzDA3JMmNc/gFNaqb2eOHd0ll P6LbKNLNdJScsdo+7cCv6RlcXMffERSL6CNnOY62KiEfAIJyXrxcvOL6RvGd7qZA6Dom2kJeNAq 6M3qnKP7ZQsFDIENjvEUPMTO95+zN6Ql5fL8pkAPLtsOESS6QvIBV7qnYM+dyTwGeTMJzqk9LZ6 g/725GdkH60DSX36J3YUYaUjUqos7CJFgBuENmayd8k+e+t3MOOzpeh9pEF0K++9Z8PV1kbpVOP LEy2KoplchfXrzS10mQIx+q5O2+boaYrOiH4dh5kiLIoLpYZv1npQMxIclDZpW2qHr0xOE8sctQ WzPlTI+EO1P8OkA== X-Developer-Key: i=krzysztof.kozlowski@linaro.org; a=openpgp; fpr=9BD07E0E0C51F8D59677B7541B93437D3B41629B Simplify error handling (less gotos) over locks with guard(). Signed-off-by: Krzysztof Kozlowski --- drivers/clk/qcom/clk-smd-rpm.c | 25 ++++++++++--------------- 1 file changed, 10 insertions(+), 15 deletions(-) diff --git a/drivers/clk/qcom/clk-smd-rpm.c b/drivers/clk/qcom/clk-smd-rpm.c index 45c5255bcd11bae69b83138ba1d5e52a8a3f3be8..b8cd9f7301194a539d5fb18f974= a5600496a1032 100644 --- a/drivers/clk/qcom/clk-smd-rpm.c +++ b/drivers/clk/qcom/clk-smd-rpm.c @@ -4,6 +4,7 @@ * Copyright (c) 2014, The Linux Foundation. All rights reserved. */ =20 +#include #include #include #include @@ -309,10 +310,10 @@ static void clk_smd_rpm_unprepare(struct clk_hw *hw) unsigned long active_rate, sleep_rate; int ret; =20 - mutex_lock(&rpm_smd_clk_lock); + guard(mutex)(&rpm_smd_clk_lock); =20 if (!r->rate) - goto out; + return; =20 /* Take peer clock's rate into account only if it's enabled. */ if (peer->enabled) @@ -322,17 +323,14 @@ static void clk_smd_rpm_unprepare(struct clk_hw *hw) active_rate =3D r->branch ? !!peer_rate : peer_rate; ret =3D clk_smd_rpm_set_rate_active(r, active_rate); if (ret) - goto out; + return; =20 sleep_rate =3D r->branch ? !!peer_sleep_rate : peer_sleep_rate; ret =3D clk_smd_rpm_set_rate_sleep(r, sleep_rate); if (ret) - goto out; + return; =20 r->enabled =3D false; - -out: - mutex_unlock(&rpm_smd_clk_lock); } =20 static int clk_smd_rpm_set_rate(struct clk_hw *hw, unsigned long rate, @@ -345,10 +343,10 @@ static int clk_smd_rpm_set_rate(struct clk_hw *hw, un= signed long rate, unsigned long peer_rate =3D 0, peer_sleep_rate =3D 0; int ret =3D 0; =20 - mutex_lock(&rpm_smd_clk_lock); + guard(mutex)(&rpm_smd_clk_lock); =20 if (!r->enabled) - goto out; + return 0; =20 to_active_sleep(r, rate, &this_rate, &this_sleep_rate); =20 @@ -360,19 +358,16 @@ static int clk_smd_rpm_set_rate(struct clk_hw *hw, un= signed long rate, active_rate =3D max(this_rate, peer_rate); ret =3D clk_smd_rpm_set_rate_active(r, active_rate); if (ret) - goto out; + return ret; =20 sleep_rate =3D max(this_sleep_rate, peer_sleep_rate); ret =3D clk_smd_rpm_set_rate_sleep(r, sleep_rate); if (ret) - goto out; + return ret; =20 r->rate =3D rate; =20 -out: - mutex_unlock(&rpm_smd_clk_lock); - - return ret; + return 0; } =20 static long clk_smd_rpm_round_rate(struct clk_hw *hw, unsigned long rate, --=20 2.43.0