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65878fd952
As the cmd IO path has learned to propagate errnos back to its callers, let them deal with errors instead of trying to restore their previous configuration from within the IO error path. Also translate the HW error to a meaningful errno, instead of returning -EIO for all cases (and don't map this to -EOPNOTSUPP later on...). While at it, add a READ_ONCE() / WRITE_ONCE() pair to ensure that the data path always sees a valid isolation mode during reconfiguration. Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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.