tree 73c4afa873f131ab70998332b9f4ece9e6f83d24
parent b7d7b28471072fc23e7b573aef89c14438092223
author Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com> 1471374038 +0300
committer Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com> 1473944661 +0300

tpm: fix a race condition in tpm2_unseal_trusted()

Unseal and load operations should be done as an atomic operation. This
commit introduces unlocked tpm_transmit() so that tpm2_unseal_trusted()
can do the locking by itself.

Fixes: 0fe5480303a1 ("keys, trusted: seal/unseal with TPM 2.0 chips")
Cc: stable@vger.kernel.org
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Reviewed-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>