tpm: replace TPM_TRANSMIT_RAW with TPM_TRANSMIT_NESTED

As TPM_TRANSMIT_RAW always requires also not to take locks for obvious
reasons (deadlock), this commit renames the flag as TPM_TRANSMIT_NESTED
and prevents taking tpm_mutex when the flag is given to tpm_transmit().

Suggested-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>

drivers/char/tpm/tpm.h

@@ -513,16 +513,16 @@ extern const struct file_operations tpmrm_fops;
 extern struct idr dev_nums_idr;
 
 /**
- * enum tpm_transmit_flags
+ * enum tpm_transmit_flags - flags for tpm_transmit()
  *
- * @TPM_TRANSMIT_UNLOCKED: used to lock sequence of tpm_transmit calls.
- * @TPM_TRANSMIT_RAW: prevent recursive calls into setup steps
- *                    (go idle, locality,..). Always use with UNLOCKED
- *                    as it will fail on double locking.
+ * @TPM_TRANSMIT_UNLOCKED:	do not lock the chip
+ * @TPM_TRANSMIT_NESTED:	discard setup steps (power management,
+ *				locality) including locking (i.e. implicit
+ *				UNLOCKED)
  */
 enum tpm_transmit_flags {
-	TPM_TRANSMIT_UNLOCKED = BIT(0),
-	TPM_TRANSMIT_RAW      = BIT(1),
+	TPM_TRANSMIT_UNLOCKED	= BIT(0),
+	TPM_TRANSMIT_NESTED      = BIT(1),
 };
 
 ssize_t tpm_transmit(struct tpm_chip *chip, struct tpm_space *space,