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From: Jon Hunter <jonathanh@nvidia.com>
To: Viresh Kumar <viresh.kumar@linaro.org>
Cc: webgeek1234@gmail.com, "Rafael J. Wysocki" <rafael@kernel.org>,
	Thierry Reding <thierry.reding@gmail.com>,
	linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org,
	linux-tegra@vger.kernel.org
Subject: Re: [PATCH v4 1/2] cpufreq: tegra124: Remove use of disable_cpufreq
Date: Thu, 5 Jun 2025 11:34:02 +0100	[thread overview]
Message-ID: <9826e66a-3474-4a00-967d-b7784ff60be4@nvidia.com> (raw)
In-Reply-To: <20250520100218.te5i5ltrx43zjsq6@vireshk-i7>


On 20/05/2025 11:02, Viresh Kumar wrote:
> On 20-05-25, 10:53, Jon Hunter wrote:
>> I understand, but this seems odd. It would be odd that the device may just
>> disappear after resuming from suspend if it fails to resume. I have not seen
>> this done for other drivers that fail to resume. Presumably this is not the
>> only CPU Freq driver that could fail to resume either?
>>
>> It makes the code messy because now we have more than one place where the
>> device could be unregistered.
> 
> Fair enough.
> 
> This driver, along with other cpufreq drivers, can fail at multiple
> places during suspend/resume (and other operations). If something goes
> wrong, we print an error to inform the user. Should we avoid doing
> anything else (like everyone else) ? i.e. Just remove the call to
> disable_cpufreq(), as all later calls will fail anyway.

I think that would be fine. Given that the tegra124-cpufreq driver is 
the parent, if it fails to resume, then I assume that cpufreq-dt driver 
would not resume either? Has anyone tested this?

Jon

-- 
nvpublic


  parent reply	other threads:[~2025-06-05 10:34 UTC|newest]

Thread overview: 34+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-05-09  0:04 [PATCH v4 0/2] Support building tegra124-cpufreq as a module Aaron Kling
2025-05-09  0:04 ` Aaron Kling via B4 Relay
2025-05-09  0:04 ` [PATCH v4 1/2] cpufreq: tegra124: Remove use of disable_cpufreq Aaron Kling
2025-05-09  0:04   ` Aaron Kling via B4 Relay
2025-05-09 11:04   ` Jon Hunter
2025-05-09 16:57     ` Aaron Kling
2025-05-14 16:26       ` Aaron Kling
2025-05-19 10:17     ` Viresh Kumar
2025-05-20  9:53       ` Jon Hunter
2025-05-20 10:02         ` Viresh Kumar
2025-05-28 17:29           ` Aaron Kling
2025-05-29  5:16             ` Viresh Kumar
2025-06-05 10:34           ` Jon Hunter [this message]
2025-06-05 10:51             ` Viresh Kumar
2025-06-30 18:43               ` Aaron Kling
2025-07-01  6:23                 ` Viresh Kumar
2025-05-09  0:04 ` [PATCH v4 2/2] cpufreq: tegra124: Allow building as a module Aaron Kling
2025-05-09  0:04   ` Aaron Kling via B4 Relay
2025-05-09 13:37   ` Jon Hunter
2025-05-13  4:26     ` Aaron Kling
2025-05-14 10:31       ` Jon Hunter
2025-05-14 16:43       ` Aaron Kling
2025-05-15  6:41         ` Jon Hunter
2025-05-19 10:37           ` Viresh Kumar
2025-05-20  9:57             ` Jon Hunter
2025-05-20 10:33               ` Viresh Kumar
2025-05-20 15:38                 ` Aaron Kling
2025-05-14 10:31   ` Jon Hunter
2025-05-14 16:30     ` Aaron Kling
2025-05-15  6:21       ` Jon Hunter
2025-05-19 10:26     ` Viresh Kumar
2025-05-20 10:03       ` Jon Hunter
2025-05-20 10:30         ` Viresh Kumar
2025-05-20 11:46           ` Jon Hunter

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