https://github.com/torvalds/linux
Revision c9f21cb6388898bfe69886d001316dae7ecc9a4b authored by Tom Lendacky on 05 September 2014, 15:31:09 UTC, committed by Herbert Xu on 24 September 2014, 06:23:34 UTC
If the ccp is built as a built-in module, then ccp-crypto (whether
built as a module or a built-in module) will be able to load and
it will register its crypto algorithms.  If the system does not have
a CCP this will result in -ENODEV being returned whenever a command
is attempted to be queued by the registered crypto algorithms.

Add an API, ccp_present(), that checks for the presence of a CCP
on the system.  The ccp-crypto module can use this to determine if it
should register it's crypto alogorithms.

Cc: stable@vger.kernel.org
Reported-by: Scot Doyle <lkml14@scotdoyle.com>
Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
Tested-by: Scot Doyle <lkml14@scotdoyle.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
1 parent 413e557
History
Tip revision: c9f21cb6388898bfe69886d001316dae7ecc9a4b authored by Tom Lendacky on 05 September 2014, 15:31:09 UTC
crypto: ccp - Check for CCP before registering crypto algs
Tip revision: c9f21cb
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