tpm: Unify the send callback behaviour
The send() callback should never return length as it does not in every driver except tpm_crb in the success case. The reason is that the main transmit functionality only cares about whether the transmit was successful or not and ignores the count completely. Suggested-by:Stefan Berger <stefanb@linux.ibm.com> Cc: stable@vger.kernel.org Signed-off-by:
Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com> Reviewed-by:
Stefan Berger <stefanb@linux.ibm.com> Reviewed-by:
Jerry Snitselaar <jsnitsel@redhat.com> Tested-by:
Alexander Steffen <Alexander.Steffen@infineon.com>
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