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    SubjectRe: [PATCH] security/keys/trusted: Allow operation without hardware TPM
    On Mon, Mar 18, 2019 at 04:45:13PM -0700, Dan Williams wrote:
    > Rather than fail initialization of the trusted.ko module, arrange for
    > the module to load, but rely on trusted_instantiate() to fail
    > trusted-key operations.
    >
    > Fixes: 240730437deb ("KEYS: trusted: explicitly use tpm_chip structure...")
    > Cc: Roberto Sassu <roberto.sassu@huawei.com>
    > Cc: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
    > Cc: James Bottomley <jejb@linux.ibm.com>
    > Cc: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
    > Cc: Mimi Zohar <zohar@linux.ibm.com>
    > Cc: David Howells <dhowells@redhat.com>
    > Signed-off-by: Dan Williams <dan.j.williams@intel.com>

    It should check for chip in each function that uses TPM now that
    the code does not rely on default chip. Otherwise, the semantics
    are kind of inconsistent.

    /Jarkko

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