0049a1329b
Wang Qing reports that IS_ERR_OR_NULL() should be matched with PTR_ERR_OR_ZERO(), not PTR_ERR(). As it turns out, the error path always returns an error code, i.e. NULL is never returned. Update the code accordingly - s/IS_ERR_OR_NULL/IS_ERR. Reported-by: Wang Qing <wangqing@vivo.com> Signed-off-by: Horia Geantă <horia.geanta@nxp.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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.