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If LMH (Limits Management Hardware) is available, when a policy is disabled by unplugging the last online CPU of policy->cpus, the LMH irq is left enabled. When the policy is re-enabled with any of the CPU in policy->cpus being plugged in, qcom_cpufreq_ready() re-enables the irq. This triggers the following warning: [ 379.160106] Unbalanced enable for IRQ 154 [ 379.160120] WARNING: CPU: 7 PID: 48 at kernel/irq/manage.c:774 __enable_irq+0x84/0xc0 Thus disable the irq. Signed-off-by: Pierre Gondois <pierre.gondois@arm.com> Signed-off-by: Viresh Kumar <viresh.kumar@linaro.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.