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When calling debugfs functions, there is no need to ever check the return value. The function can work or not, but the code logic should never do something different based on this. If a debugfs call fails, it will properly warn in the syslog, there's no need for all individual drivers to also print a message, so that is one more reason to not care about checking the return values. Cc: Vishal Kulkarni <vishal@chelsio.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Casey Leedom <leedom@chelsio.com> Cc: netdev@vger.kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 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.