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From: Daniel Lezcano <daniel.lezcano@linaro.org>
To: dsmythies@telus.net, rafael@kernel.org
Cc: linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org,
	lukasz.luba@arm.com, gregkh@linuxfoundation.org,
	Daniel Lezcano <daniel.lezcano@kernel.org>
Subject: [PATCH] powercap/drivers/dtpm: Disable dtpm at boot time
Date: Sat, 27 Nov 2021 00:08:20 +0100	[thread overview]
Message-ID: <20211126230820.3441863-1-daniel.lezcano@linaro.org> (raw)
In-Reply-To: <9821f60a-c562-12e8-bdd4-45dbfe88a117@linaro.org>

The DTPM framework misses a mechanism to set it up. That is currently
under review but will come after the next cycle.

As the distro are enabling all the kernel options, the DTPM framework
is enabled on platforms where the energy model is not implemented,
thus making the framework inconsistent and disrupting the CPU
frequency scaling service.

Remove the initialization at boot time as a hot fix.

Fixes: 7a89d7eacf8e ("powercap/drivers/dtpm: Simplify the dtpm table")
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
---
 drivers/powercap/dtpm.c | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/drivers/powercap/dtpm.c b/drivers/powercap/dtpm.c
index b9fac786246a..fb35c5828bfb 100644
--- a/drivers/powercap/dtpm.c
+++ b/drivers/powercap/dtpm.c
@@ -471,9 +471,6 @@ static int __init init_dtpm(void)
 		return PTR_ERR(pct);
 	}
 
-	for_each_dtpm_table(dtpm_descr)
-		dtpm_descr->init();
-
 	return 0;
 }
 late_initcall(init_dtpm);
-- 
2.25.1


  reply	other threads:[~2021-11-26 23:11 UTC|newest]

Thread overview: 30+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-04-01 18:36 [PATCH v6 1/7] powercap/drivers/dtpm: Encapsulate even more the code Daniel Lezcano
2021-04-01 18:36 ` [PATCH v6 2/7] powercap/drivers/dtpm: Create a registering system Daniel Lezcano
2021-04-01 19:28   ` Greg KH
2021-04-01 22:08     ` Daniel Lezcano
2021-04-02  8:02       ` Greg KH
2021-04-02 11:10         ` Daniel Lezcano
2021-04-02 11:48           ` Greg KH
2021-04-01 18:36 ` [PATCH v6 3/7] powercap/drivers/dtpm: Simplify the dtpm table Daniel Lezcano
2021-11-26 17:08   ` Doug Smythies
2021-11-26 17:21     ` Rafael J. Wysocki
2021-11-26 17:43       ` Daniel Lezcano
2021-11-26 18:18         ` Rafael J. Wysocki
2021-11-26 21:56         ` Doug Smythies
2021-11-26 23:05           ` Daniel Lezcano
2021-11-26 23:08             ` Daniel Lezcano [this message]
2021-11-26 23:10               ` [PATCH] powercap/drivers/dtpm: Disable dtpm at boot time Daniel Lezcano
2021-11-27  1:13                 ` Doug Smythies
2021-12-01 18:56                   ` Rafael J. Wysocki
2021-11-26 19:10       ` [PATCH v6 3/7] powercap/drivers/dtpm: Simplify the dtpm table Doug Smythies
2021-11-26 19:29         ` Rafael J. Wysocki
2021-11-30 16:46           ` Daniel Lezcano
2021-11-26 17:40     ` Daniel Lezcano
2021-11-26 18:23       ` Rafael J. Wysocki
2021-04-01 18:36 ` [PATCH v6 4/7] powercap/drivers/dtpm: Use container_of instead of a private data field Daniel Lezcano
2021-04-01 18:36 ` [PATCH v6 5/7] powercap/drivers/dtpm: Scale the power with the load Daniel Lezcano
2021-04-01 18:36 ` [PATCH v6 6/7] powercap/drivers/dtpm: Export the symbols for the modules Daniel Lezcano
2021-04-01 18:36 ` [PATCH v6 7/7] powercap/drivers/dtpm: Allow dtpm node device creation through configfs Daniel Lezcano
2021-04-01 19:37   ` Greg KH
2021-04-02 10:54     ` Daniel Lezcano
2021-04-02 10:54     ` Daniel Lezcano

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