tpm: remove TPM_TRANSMIT_UNLOCKED flag

Added locking as part of tpm_try_get_ops() and tpm_put_ops() as they are
anyway used in most of the call sites except in tpmrm_release() where we
take the locks manually.

Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Reviewed-by: Stefan Berger <stefanb@linux.ibm.com>
Tested-by: Stefan Berger <stefanb@linux.ibm.com>
Reviewed-by: Jerry Snitselaar <jsnitsel@redhat.com>
Reviewed-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Tested-by: Alexander Steffen <Alexander.Steffen@infineon.com>

drivers/char/tpm/tpm-interface.c

@@ -236,10 +236,6 @@ ssize_t tpm_transmit(struct tpm_chip *chip, u8 *buf, size_t bufsiz,
 	memcpy(save, buf, save_size);
 
 	for (;;) {
-		if (!(flags & TPM_TRANSMIT_UNLOCKED) &&
-		    !(flags & TPM_TRANSMIT_NESTED))
-			mutex_lock(&chip->tpm_mutex);
-
 		if (chip->ops->clk_enable != NULL)
 			chip->ops->clk_enable(chip, true);
 
@@ -266,10 +262,6 @@ out_locality:
 		if (chip->ops->clk_enable != NULL)
 			chip->ops->clk_enable(chip, false);
 
-		if (!(flags & TPM_TRANSMIT_UNLOCKED) &&
-		    !(flags & TPM_TRANSMIT_NESTED))
-			mutex_unlock(&chip->tpm_mutex);
-
 		if (ret < 0)
 			break;
 		rc = be32_to_cpu(header->return_code);