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[ Upstream commit a4ca341080758d847db155b97887bff6f84016a4 ] hns_roce_mtr_find() is a collection of multiple functions, and the return value is also difficult to understand, which is not conducive to modification and maintenance. Separate the function of obtaining MTR root BA from this function. And some adjustments has been made to improve readability. Signed-off-by: Chengchang Tang <tangchengchang@huawei.com> Signed-off-by: Junxian Huang <huangjunxian6@hisilicon.com> Link: https://lore.kernel.org/r/20240113085935.2838701-2-huangjunxian6@hisilicon.com Signed-off-by: Leon Romanovsky <leon@kernel.org> Stable-dep-of: 8673a6c2d9e4 ("RDMA/hns: Fix mapping error of zero-hop WQE buffer") Signed-off-by: Sasha Levin <sashal@kernel.org>
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.