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

From: Lukasz Luba
Date: Wed Mar 16 2022 - 19:53:13 EST


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@xxxxxxx>
---
drivers/powercap/dtpm_cpu.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

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);
--
2.17.1