linux-kernel - Re: [PATCH v2 11/18] cpufreq: tegra186: Use __free(put_cpufreq

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Message-ID: <20250829062951.ximauv2so442q4gv@vireshk-i7>
Date: Fri, 29 Aug 2025 11:59:51 +0530
From: Viresh Kumar <viresh.kumar@...aro.org>
To: Zihuan Zhang <zhangzihuan@...inos.cn>
Cc: "Rafael J . wysocki" <rafael@...nel.org>,
	Catalin Marinas <catalin.marinas@....com>,
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Subject: Re: [PATCH v2 11/18] cpufreq: tegra186: Use
 __free(put_cpufreq_policy) for policy reference

On 27-08-25, 10:31, Zihuan Zhang wrote:
> 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@...inos.cn>
> ---
>  drivers/cpufreq/tegra186-cpufreq.c | 3 +--
>  1 file changed, 1 insertion(+), 2 deletions(-)
> 
> diff --git a/drivers/cpufreq/tegra186-cpufreq.c b/drivers/cpufreq/tegra186-cpufreq.c
> index cbabb726c664..4d71e262a729 100644
> --- a/drivers/cpufreq/tegra186-cpufreq.c
> +++ b/drivers/cpufreq/tegra186-cpufreq.c
> @@ -105,7 +105,7 @@ static unsigned int tegra186_cpufreq_get(unsigned int cpu)
>  {
>  	struct tegra186_cpufreq_data *data = cpufreq_get_driver_data();
>  	struct tegra186_cpufreq_cluster *cluster;
> -	struct cpufreq_policy *policy;
> +	struct cpufreq_policy *policy __free(put_cpufreq_policy);
>  	unsigned int edvd_offset, cluster_id;
>  	u32 ndiv;
>  
> @@ -117,7 +117,6 @@ static unsigned int tegra186_cpufreq_get(unsigned int cpu)
>  	ndiv = readl(data->regs + edvd_offset) & EDVD_CORE_VOLT_FREQ_F_MASK;
>  	cluster_id = data->cpus[policy->cpu].bpmp_cluster_id;
>  	cluster = &data->clusters[cluster_id];
> -	cpufreq_cpu_put(policy);
>  
>  	return (cluster->ref_clk_khz * ndiv) / cluster->div;

Merged with:

diff --git a/drivers/cpufreq/tegra186-cpufreq.c b/drivers/cpufreq/tegra186-cpufreq.c
index 4d71e262a729..4270686fc3e3 100644
--- a/drivers/cpufreq/tegra186-cpufreq.c
+++ b/drivers/cpufreq/tegra186-cpufreq.c
@@ -103,13 +103,12 @@ static int tegra186_cpufreq_set_target(struct cpufreq_policy *policy,
 
 static unsigned int tegra186_cpufreq_get(unsigned int cpu)
 {
+       struct cpufreq_policy *policy __free(put_cpufreq_policy) = cpufreq_cpu_get(cpu);
        struct tegra186_cpufreq_data *data = cpufreq_get_driver_data();
        struct tegra186_cpufreq_cluster *cluster;
-       struct cpufreq_policy *policy __free(put_cpufreq_policy);
        unsigned int edvd_offset, cluster_id;
        u32 ndiv;
 
-       policy = cpufreq_cpu_get(cpu);
        if (!policy)
                return 0;
 

-- 
viresh