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Once the crypto hash walk is started by crypto_hash_walk_first() returning non-zero, crypto_hash_walk_done() must be called to unmap any memory which was mapped by *_walk_first(). Ensure crypto_hash_walk_done() is called properly by: 1) Re-arranging the check for device data to be prior to calling *_walk_first() 2) on error call crypto_hash_walk_done() with an error code to allow the hash walk code to clean up. While we are at it clean up the 'out' label to be more meaningful. Signed-off-by: Ira Weiny <ira.weiny@intel.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.