linux-kernel - 回复: [PATCH] cpufreq: create cooling device based on ACPI

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Message-ID: <PUZPR06MB5498319D81B4BC7F18412FC0F0719@PUZPR06MB5498.apcprd06.prod.outlook.com>
Date:   Mon, 8 May 2023 07:12:51 +0000
From:   Xinglong Yang <xinglong.yang@...tech.com>
To:     "wangyouwan@....com" <wangyouwan@....com>
CC:     "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: 回复: [PATCH] cpufreq: create cooling device based on ACPI

Does this patch need to be packaged with other patches?
Whether the function cpufreq_cooling_register is declared in cpufreq.c?

-----邮件原件-----
发件人: wangyouwan@....com <wangyouwan@....com>
发送时间: 2023年4月28日 15:03
收件人: rafael@...nel.org; viresh.kumar@...aro.org
抄送: linux-pm@...r.kernel.org; linux-kernel@...r.kernel.org; youwan Wang <wangyouwan@....com>
主题: [PATCH] cpufreq: create cooling device based on ACPI

EXTERNAL EMAIL

From: youwan Wang <wangyouwan@....com>

When using the "scpi_cpufreq" driver, an error
occurs:cpufreq_cooling: OF node not available for cpu*.
The current computer motherboard is using ACPI firmware.
Go to see that the error is caused by calling the "of_cpufreq_cooling_register" interface.
comment:create cpufreq cooling device based on DT.

Signed-off-by: youwan Wang <wangyouwan@....com>
---
 drivers/cpufreq/cpufreq.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c index 6b52ebe5a890..3418c68959d5 100644
--- a/drivers/cpufreq/cpufreq.c
+++ b/drivers/cpufreq/cpufreq.c
@@ -1528,8 +1528,13 @@ static int cpufreq_online(unsigned int cpu)
        if (cpufreq_driver->ready)
                cpufreq_driver->ready(policy);

-       if (cpufreq_thermal_control_enabled(cpufreq_driver))
+       if (cpufreq_thermal_control_enabled(cpufreq_driver)) { #ifdef
+CONFIG_ACPI
+               policy->cdev = cpufreq_cooling_register(policy); #else
                policy->cdev = of_cpufreq_cooling_register(policy);
+#endif
+       }

        pr_debug("initialization complete\n");

--
2.25.1

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