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When executing exchange config data for a FCP device for the first time, or after an adapter recovery, we update several properties of the scsi host or fibre channel host object that represent that FCP device. When moving the scsi host object allocation and registration - and thus also the fibre channel host object allocation - to after the first exchange config and exchange port data, this is not possible for the former case. Move all these update into separate, and fenced function that first checks whether the scsi host object already exists or not, before making the updates. During the first ever exchange config data in the adapter life cycle this will make the exchange config data handler skip over this update step, but we can repeat it later, after we allocated the scsi host object. For any further recovery of that adapter the work flow is only changed slightly because then the scsi host object already exists and we don't free it until we release the adapter completely at the end of its life cycle. Link: https://lore.kernel.org/r/5fc3f4d38d4334f7aa595497c6f7865fb1102e0f.1588956679.git.bblock@linux.ibm.com Reviewed-by: Steffen Maier <maier@linux.ibm.com> Signed-off-by: Benjamin Block <bblock@linux.ibm.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.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.