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8b2e37f03c
If the PD has already been turned off, and the value of
vop2_power_domain.ref_count is zero at this time, calling
vop2_power_domain_put() again will cause ref_count to underflow.
This underflow will be interpreted as if the PD has been turned on.
Fixes: aa3aee14d0 ("drm/rockchip: vop2: Add vop2 internal pd support for rk3588")
Change-Id: Ia814c5907072cd1aee785734e36053cba7382b23
Signed-off-by: Chaoyi Chen <chaoyi.chen@rock-chips.com>
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.