Ding Wei 2d16c73564 video: rockchip: mpp: refresh pm_runtime for shared iommu
when iommu shared, such as px30 rk3368, each device power on affect
iommu usage_count add once. in this case, it should pm_runtime_put/get
by usage_count times,then hardware will really suspend/resume.

Change-Id: I7e57818e4eaf8af84e52c2d77030791329721c2e
Signed-off-by: Ding Wei <leo.ding@rock-chips.com>
2020-06-19 18:48:45 +08:00
2020-03-03 07:33:01 +01:00
2020-06-09 22:19:16 +08:00
2020-03-03 07:33:01 +01:00

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.
See Documentation/00-INDEX for a list of what is contained in each file.

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.
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