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If, after registering a logical PIO range, the driver probe later fails, the logical PIO range memory will be released automatically. This causes an issue, in that the logical PIO range is not unregistered and the released range memory may be later referenced. Fix by unregistering the logical PIO range. And since we now unregister the logical PIO range for probe failure, avoid the special ordering of setting logical PIO range ops, which was the previous (poor) attempt at a safeguard against this. Cc: stable@vger.kernel.org Fixes: adf38bb0b595 ("HISI LPC: Support the LPC host on Hip06/Hip07 with DT bindings") Signed-off-by: John Garry <john.garry@huawei.com> Signed-off-by: Wei Xu <xuwei5@hisilicon.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.