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[ Upstream commit498ba2a8a2] 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:a871be6b8e("cpuidle: Convert Qualcomm SPM driver to a generic CPUidle driver") Reported-by: Hulk Robot <hulkci@huawei.com> Signed-off-by: He Ying <heying24@huawei.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Link: https://lore.kernel.org/r/20210406123328.92904-1-heying24@huawei.com Signed-off-by: Sasha Levin <sashal@kernel.org>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.