2297791c92
The devices owned by the parent-driver (css) was getting unregistered from the io-subchannel driver is clearly a layering violation. Remove the subchannel unregistration from the child-drivers. This also means, if the device connected to the subchannel is not operational, or not accessible, the subchannel will not be unregistered. Instead the CIO layer will allow valid subchannels without any operational devices in sysfs. And the userspace tooling might need to be modified to optimally handle this new situation. Signed-off-by: Vineeth Vijayan <vneethv@linux.ibm.com> Reviewed-by: Peter Oberparleiter <oberpar@linux.ibm.com> Signed-off-by: Heiko Carstens <hca@linux.ibm.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.