[PATCH v5 4/4] tpm_tis: Increase ST19NP18 TPM command duration to avoid chip lockup

2016-06-08 Thread Ed Swierk
The STMicro ST19NP18-TPM sometimes takes much longer to execute commands than it reports in its capabilities. For example, command 186 (TPM_FlushSpecific) has been observed to take 14560 msec to complete, far longer than the 3000 msec limit for "short" commands reported by the chip. The behavior

[PATCH v5 4/4] tpm_tis: Increase ST19NP18 TPM command duration to avoid chip lockup

2016-06-08 Thread Ed Swierk
The STMicro ST19NP18-TPM sometimes takes much longer to execute commands than it reports in its capabilities. For example, command 186 (TPM_FlushSpecific) has been observed to take 14560 msec to complete, far longer than the 3000 msec limit for "short" commands reported by the chip. The behavior