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[[PATCH,8/8] powercap: DTPM: Check for Energy Model type

Message ID 20220316235211.29370-9-lukasz.luba@arm.com (mailing list archive)
State New
Headers show
Series Introduce support for artificial Energy Model | expand

Commit Message

Lukasz Luba March 16, 2022, 11:52 p.m. UTC
The Energy Model power values might be artificial. In such case
it's safe to bail out during the registration, since the PowerCap
framework supports only micro-Watts.

Signed-off-by: Lukasz Luba <lukasz.luba@arm.com>
---
 drivers/powercap/dtpm_cpu.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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Patch

diff --git a/drivers/powercap/dtpm_cpu.c b/drivers/powercap/dtpm_cpu.c
index bca2f912d349..f5eced0842b3 100644
--- a/drivers/powercap/dtpm_cpu.c
+++ b/drivers/powercap/dtpm_cpu.c
@@ -211,7 +211,7 @@  static int __dtpm_cpu_setup(int cpu, struct dtpm *parent)
 		return 0;
 
 	pd = em_cpu_get(cpu);
-	if (!pd)
+	if (!pd || em_is_artificial(pd))
 		return -EINVAL;
 
 	dtpm_cpu = kzalloc(sizeof(*dtpm_cpu), GFP_KERNEL);