# \[PATCH\] cpuidle: Fix ARM\_QCOM\_SPM\_CPUIDLE configuration

- From: He Ying \<hidden\>
- Date: 2021-03-31 08:12:41 
- List: linux-pm
- Page: https://ratatoskr.run/linux-pm/2021/03/6322293
- Thread: https://ratatoskr.run/linux-pm/2021/03/6322293/t.md

```text
When CONFIG_ARM_QCOM_SPM_CPUIDLE is y and CONFIG_MMU is not set,
compiling errors are encountered as follows:

drivers/cpuidle/cpuidle-qcom-spm.o: In function `spm_dev_probe':
cpuidle-qcom-spm.c:(.text+0x140): undefined reference to `cpu_resume_arm'
cpuidle-qcom-spm.c:(.text+0x148): undefined reference to `cpu_resume_arm'

So, add dependency on MMU in ARM_QCOM_SPM_CPUIDLE configuration.

Reported-by: Hulk Robot <redacted>
Signed-off-by: He Ying <redacted>
---
 drivers/cpuidle/Kconfig.arm | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/cpuidle/Kconfig.arm b/drivers/cpuidle/Kconfig.arm
index 0844fadc4be8..334f83e56120 100644
--- a/drivers/cpuidle/Kconfig.arm
+++ b/drivers/cpuidle/Kconfig.arm
@@ -107,7 +107,7 @@ config ARM_TEGRA_CPUIDLE
 
 config ARM_QCOM_SPM_CPUIDLE
 	bool "CPU Idle Driver for Qualcomm Subsystem Power Manager (SPM)"
-	depends on (ARCH_QCOM || COMPILE_TEST) && !ARM64
+	depends on (ARCH_QCOM || COMPILE_TEST) && !ARM64 && MMU
 	select ARM_CPU_SUSPEND
 	select CPU_IDLE_MULTIPLE_DRIVERS
 	select DT_IDLE_STATES
-- 
2.17.1

```