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[ Upstream commit1c472d4628] The AP bus scan is aborted before doing anything worth mentioning if ap_select_domain() fails, e.g. if the ap_rights.aqm mask is all zeros. As the result of this the ap bus fails to manage (e.g. create and register) devices like it is supposed to. Let us make ap_scan_bus() work even if ap_select_domain() can't select a default domain. Let's also make ap_select_domain() return void, as there are no more callers interested in its return value. Signed-off-by: Halil Pasic <pasic@linux.ibm.com> Reported-by: Michael Mueller <mimu@linux.ibm.com> Fixes:7e0bdbe5c2"s390/zcrypt: AP bus support for alternate driver(s)" [freude@linux.ibm.com: title and patch header slightly modified] Signed-off-by: Harald Freudenberger <freude@linux.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> 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.
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.