linux-kernel - [PATCH resend] cpuidle: Fix ARM_QCOM_SPM

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Date:   Tue, 6 Apr 2021 08:33:28 -0400
From:   He Ying <heying24@...wei.com>
To:     <rjw@...ysocki.net>, <daniel.lezcano@...aro.org>
CC:     <heying24@...wei.com>, <linux-pm@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>
Subject: [PATCH resend] cpuidle: Fix ARM_QCOM_SPM_CPUIDLE configuration

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'

Note that cpu_resume_arm is defined when MMU is set. So, add dependency
on MMU in ARM_QCOM_SPM_CPUIDLE configuration.

Fixes: a871be6b8eee ("cpuidle: Convert Qualcomm SPM driver to a generic CPUidle driver")
Reported-by: Hulk Robot <hulkci@...wei.com>
Signed-off-by: He Ying <heying24@...wei.com>
---
 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