f96622fd3a
There were a few places where no extack error message was set, or the extack was not forwarded to callees, potentially resulting in a return of -EOPNOTSUPP with no additional information. Make sure to populate the error message in these cases. In practice this does us no good as TC indirect block callbacks don't come with an extack to fill in; but maybe they will someday and when debugging it's possible to provide a fake extack and emit its message to the console. Reviewed-by: Pieter Jansen van Vuuren <pieter.jansen-van-vuuren@amd.com> Signed-off-by: Edward Cree <ecree.xilinx@gmail.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.