On 2/8/19 11:03 AM, Jarkko Sakkinen wrote:

A portion of send() callbacks have returned length, in many cases just
returning back what was given as an argument, and tpm_crb has returned 0 on
success. This patch set fixes and unifies the behaviour.

v2:
The drivers tpm_nsc and tpm_infineon were forgotten. For this version I
checked both with find and command and from Kconfig that everything that is
supposed to be a driver directly interfacing with the TPM core, is included
(e.g. discluding tpm_tis_spi).

:-( st33zp24/i2c.c ends up calling i2c_master_send, which returns number 
of bytes written:

https://elixir.bootlin.com/linux/latest/source/include/linux/i2c.h#L108

Jarkko Sakkinen (2):
   tpm: Unify the send callback behaviour
   tpm/tpm_i2c_atmel: Return -E2BIG when the transfer is incomplete

  drivers/char/tpm/st33zp24/st33zp24.c |  2 +-
  drivers/char/tpm/tpm_atmel.c         |  2 +-
  drivers/char/tpm/tpm_i2c_atmel.c     | 10 +++++++++-
  drivers/char/tpm/tpm_i2c_infineon.c  |  2 +-
  drivers/char/tpm/tpm_i2c_nuvoton.c   |  2 +-
  drivers/char/tpm/tpm_ibmvtpm.c       |  2 +-
  drivers/char/tpm/tpm_infineon.c      |  2 +-
  drivers/char/tpm/tpm_nsc.c           |  2 +-
  drivers/char/tpm/tpm_vtpm_proxy.c    |  3 +--
  drivers/char/tpm/xen-tpmfront.c      |  2 +-
  10 files changed, 18 insertions(+), 11 deletions(-)