The command size is computed for the header anyway. It can as well indicate the correct number of bytes to read from the driver. Signed-off-by: Ricardo Schwarzmeier <Ricardo.Schwarzmeier@xxxxxxxxxxxx> --- drivers/char/tpm/tpm-interface.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/char/tpm/tpm-interface.c b/drivers/char/tpm/tpm-interface.c index e32f6e85dc6d..0923e81505a5 100644 --- a/drivers/char/tpm/tpm-interface.c +++ b/drivers/char/tpm/tpm-interface.c @@ -423,7 +423,7 @@ static ssize_t tpm_try_transmit(struct tpm_chip *chip, header->tag = cpu_to_be16(TPM2_ST_NO_SESSIONS); header->return_code = cpu_to_be32(TPM2_RC_COMMAND_CODE | TSS2_RESMGR_TPM_RC_LAYER); - return bufsiz; + return header->length; } if (bufsiz > TPM_BUFSIZE) -- 2.17.1
