From: Andreas Kemnade <andreas@kemnade•info>
To: Zihuan Zhang <zhangzihuan@kylinos•cn>
Cc: "Rafael J . wysocki" <rafael@kernel•org>,
Viresh Kumar <viresh.kumar@linaro•org>,
Catalin Marinas <catalin.marinas@arm•com>,
Will Deacon <will@kernel•org>, Borislav Petkov <bp@alien8•de>,
Dave Hansen <dave.hansen@linux•intel.com>,
Srinivas Pandruvada <srinivas.pandruvada@linux•intel.com>,
Michael Ellerman <mpe@ellerman•id.au>,
Krzysztof Kozlowski <krzk@kernel•org>,
Alim Akhtar <alim.akhtar@samsung•com>,
Thierry Reding <thierry.reding@gmail•com>,
MyungJoo Ham <myungjoo.ham@samsung•com>,
Kyungmin Park <kyungmin.park@samsung•com>,
Chanwoo Choi <cw00.choi@samsung•com>,
Jani Nikula <jani.nikula@linux•intel.com>,
Rodrigo Vivi <rodrigo.vivi@intel•com>,
Tvrtko Ursulin <tursulin@ursulin•net>,
David Airlie <airlied@gmail•com>, Simona Vetter <simona@ffwll•ch>,
Daniel Lezcano <daniel.lezcano@kernel•org>,
Sascha Hauer <s.hauer@pengutronix•de>,
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Eduardo Valentin <edubezval@gmail•com>,
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zhenglifeng <zhenglifeng1@huawei•com>,
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Lukasz Luba <lukasz.luba@arm•com>,
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linux-kernel@vger•kernel.org
Subject: Re: [PATCH v4 09/10] thermal/drivers/ti-soc-thermal: Use scope-based cleanup helper
Date: Fri, 5 Sep 2025 08:57:26 +0200 [thread overview]
Message-ID: <20250905085726.2bc6fcb4@akair> (raw)
In-Reply-To: <20250903131733.57637-10-zhangzihuan@kylinos.cn>
Am Wed, 3 Sep 2025 21:17:32 +0800
schrieb Zihuan Zhang <zhangzihuan@kylinos•cn>:
> Replace the manual cpufreq_cpu_put() with __free(put_cpufreq_policy)
> annotation for policy references. This reduces the risk of reference
> counting mistakes and aligns the code with the latest kernel style.
>
> No functional change intended.
>
> Signed-off-by: Zihuan Zhang <zhangzihuan@kylinos•cn>
> ---
> drivers/thermal/ti-soc-thermal/ti-thermal-common.c | 13 ++++---------
> 1 file changed, 4 insertions(+), 9 deletions(-)
>
> diff --git a/drivers/thermal/ti-soc-thermal/ti-thermal-common.c b/drivers/thermal/ti-soc-thermal/ti-thermal-common.c
> index 0cf0826b805a..37d06468913a 100644
> --- a/drivers/thermal/ti-soc-thermal/ti-thermal-common.c
> +++ b/drivers/thermal/ti-soc-thermal/ti-thermal-common.c
> @@ -27,7 +27,6 @@
>
> /* common data structures */
> struct ti_thermal_data {
> - struct cpufreq_policy *policy;
> struct thermal_zone_device *ti_thermal;
> struct thermal_zone_device *pcb_tz;
> struct thermal_cooling_device *cool_dev;
> @@ -218,6 +217,7 @@ int ti_thermal_register_cpu_cooling(struct ti_bandgap *bgp, int id)
> {
> struct ti_thermal_data *data;
> struct device_node *np = bgp->dev->of_node;
> + struct cpufreq_policy *policy __free(put_cpufreq_policy) = cpufreq_cpu_get(0);
>
this looks as it changes the lifecycle from the device lifetime to just
this function...
> /*
> * We are assuming here that if one deploys the zone
> @@ -234,19 +234,17 @@ int ti_thermal_register_cpu_cooling(struct ti_bandgap *bgp, int id)
> if (!data)
> return -EINVAL;
>
> - data->policy = cpufreq_cpu_get(0);
> - if (!data->policy) {
> + if (!policy) {
> pr_debug("%s: CPUFreq policy not found\n", __func__);
> return -EPROBE_DEFER;
> }
>
> /* Register cooling device */
> - data->cool_dev = cpufreq_cooling_register(data->policy);
> + data->cool_dev = cpufreq_cooling_register(policy);
and it is passed on to something living beyond this function. I see no
_get(policy) in cpufreq_cooling_register().
Am I missing something?
Regards,
Andreas
next prev parent reply other threads:[~2025-09-05 12:14 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-09-03 13:17 [PATCH v4 00/10] cpufreq: use __free() for all cpufreq_cpu_get() references Zihuan Zhang
2025-09-03 13:17 ` [PATCH v4 01/10] arm64: topology: Use scope-based cleanup helper Zihuan Zhang
2025-09-05 9:38 ` Jonathan Cameron
2025-09-03 13:17 ` [PATCH v4 02/10] ACPI: processor: thermal: " Zihuan Zhang
2025-09-03 13:23 ` Rafael J. Wysocki
2025-09-05 9:45 ` Jonathan Cameron
2025-09-03 13:17 ` [PATCH v4 03/10] cpufreq: intel_pstate: " Zihuan Zhang
2025-09-05 9:47 ` Jonathan Cameron
2025-09-05 9:48 ` Rafael J. Wysocki
2025-09-03 13:17 ` [PATCH v4 04/10] cpufreq: powernv: " Zihuan Zhang
2025-09-05 9:49 ` Jonathan Cameron
2025-09-03 13:17 ` [PATCH v4 05/10] PM / devfreq: " Zihuan Zhang
2025-09-05 10:01 ` Jonathan Cameron
2025-09-03 13:17 ` [PATCH v4 06/10] drm/i915: " Zihuan Zhang
2025-09-05 10:02 ` Jonathan Cameron
2025-09-03 13:17 ` [PATCH v4 07/10] powercap: dtpm_cpu: " Zihuan Zhang
2025-09-03 13:45 ` Rafael J. Wysocki
2025-09-04 10:37 ` Zihuan Zhang
2025-09-04 10:55 ` Krzysztof Kozlowski
2025-09-04 13:17 ` Rafael J. Wysocki
2025-09-05 7:44 ` Zihuan Zhang
2025-09-03 13:17 ` [PATCH v4 08/10] thermal: imx: " Zihuan Zhang
2025-09-05 10:05 ` Jonathan Cameron
2025-09-05 10:21 ` Zihuan Zhang
2025-09-03 13:17 ` [PATCH v4 09/10] thermal/drivers/ti-soc-thermal: " Zihuan Zhang
2025-09-05 6:57 ` Andreas Kemnade [this message]
2025-09-05 7:02 ` Krzysztof Kozlowski
2025-09-05 7:54 ` Zihuan Zhang
2025-09-03 13:17 ` [PATCH v4 10/10] PM: EM: " Zihuan Zhang
2025-09-03 13:21 ` Krzysztof Kozlowski
2025-09-03 13:41 ` Rafael J. Wysocki
2025-09-03 13:43 ` Krzysztof Kozlowski
2025-09-04 7:56 ` Zihuan Zhang
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