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6b4f98d938
For IOMMU devices, the mapped size may be larger than the requested
alloc size, which may result in inconsistent sizes being used for
unmap.
[ 12.286016] iova: 0x0000000000000000 already mapped to 0x000000000c201000 cannot remap to phys: 0x000000001369f000 prot: 0x3
[ 12.287163] [drm:rockchip_gem_iommu_map] *ERROR* failed to map buffer: size=-98 request_size=4096
[ 12.299439] iova: 0x0000000000000000 already mapped to 0x000000000c201000 cannot remap to phys: 0x000000000c2b8000 prot: 0x3
[ 12.300541] [drm:rockchip_gem_iommu_map] *ERROR* failed to map buffer: size=-98 request_size=2785280
Fixes: 2ba5e1d681 ("drm/rockchip: gem: Set size of the allocated object when create gem")
Change-Id: I3496544e5a4eb65dde657f8ed3890f4db933258f
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.