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7917cd17e6
Through analysis of the code logic, we found that the flag
&vop->is_iommu_needed is redundant. After removing it, the iommu
will be enabled at the same time as the first atomic flush operation,
which may refresh the frame or not.
This modification can make codes more concise and allow iommu to be
initialized at an earlier time point, which may avoid the potential
problems(see commit 97e3aa256f ("drm/rockchip: vop2: Remove the
flag &vop2->is_iommu_needed"))
Change-Id: If8932de972c2a4bbd04ac6b3d6c8d363a3b2cefc
Signed-off-by: Damon Ding <damon.ding@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.