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bb21ab49d6
The sub devices of rkisp will allocate memory from rkisp before the reserved memory been assigned to rkisp, and will alloc from default continuous cma memory region instead. The current system may never do free these memory, so the issue when to free these memory can not happen. Fix free issue by moving the assign memory earlier. Also return error if failed to assign reserved memory since driver has no iommu. Change-Id: I4bd3437e5536bda827c6ca71d630a993fcce2d8d Signed-off-by: Jianqun Xu <jay.xu@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.
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.