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Alex Elder says:
====================
net: ipa: wake up system on RX available
This series arranges for the IPA driver to wake up a suspended
system if the IPA hardware has a packet to deliver to the AP.
Version 2 replaced the first patch from version 1 with three
patches, in response to David Miller's feedback. And based on
Bjorn Andersson's feedback on version 2, this version reworks
the tracking of IPA clock references. As a result, we no
longer need a flag to determine whether a "don't' suspend" clock
reference is held (though an bit in a bitmask is still used for
a different purpose).
In summary:
- A refcount_t is used to track IPA clock references where an
atomic_t was previously used. (This may go away soon as well,
with upcoming work to implement runtime PM.)
- We no longer track whether a special reference has been taken
to avoid suspending IPA.
- A bit in a bitmask is used to ensure we only trigger a system
resume once per system suspend.
And from the original series:
- Suspending endpoints only occurs when suspending the driver,
not when dropping the last clock reference. Resuming
endpoints is also disconnected from starting the clock.
- The IPA SUSPEND interrupt is now a wakeup interrupt. If it
fires, it schedules a system resume operation.
- The GSI interrupt is no longer a wakeup interrupt.
====================
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
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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.