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2b09841c7e
We take a clock reference in ipa_config() in order to prevent the the IPA clock from being shutdown until a power management suspend request arrives. An atomic field in the IPA structure records whether that extra reference had been taken. Rather than using an atomic to represent a Boolean value, define a new flags bitmap, and define a "clock held" flag to represent whether the extra clock reference has been taken. Signed-off-by: Alex Elder <elder@linaro.org> Signed-off-by: David S. Miller <davem@davemloft.net>
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.