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Giovanni Cabiddu
55ec67f78c
[ Upstream commit11af152f78] The function adf_dev_init(), through the subsystem qat_compression, populates the list of list of compression instances accel_dev->compression_list. If the list of instances is not empty, the function adf_dev_start() will then call qat_compression_registers() register the compression algorithms into the crypto framework. If any of the functions in adf_dev_start() fail, the caller of such function, in the error path calls adf_dev_down() which in turn call adf_dev_stop() and adf_dev_shutdown(), see for example the function state_store in adf_sriov.c. However, if the registration of compression algorithms is not done, adf_dev_stop() will try to unregister the algorithms regardless. This might cause the counter active_devs in qat_compression.c to get to a negative value. Add a new state, ADF_STATUS_COMPRESSION_ALGS_REGISTERED, which tracks if the compression algorithms are registered into the crypto framework. Then use this to unregister the algorithms if such flag is set. This ensures that the compression algorithms are only unregistered if previously registered. Fixes:1198ae56c9("crypto: qat - expose deflate through acomp api for QAT GEN2") Signed-off-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com> Reviewed-by: Adam Guerin <adam.guerin@intel.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: Sasha Levin <sashal@kernel.org>
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.