diff options
Diffstat (limited to 'drivers/char/tpm/tpm_i2c_stm_st33.c')
| -rw-r--r-- | drivers/char/tpm/tpm_i2c_stm_st33.c | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/drivers/char/tpm/tpm_i2c_stm_st33.c b/drivers/char/tpm/tpm_i2c_stm_st33.c index 4669e3713428..3f187a529e92 100644 --- a/drivers/char/tpm/tpm_i2c_stm_st33.c +++ b/drivers/char/tpm/tpm_i2c_stm_st33.c @@ -397,7 +397,7 @@ static int wait_for_stat(struct tpm_chip *chip, u8 mask, unsigned long timeout, */ static int recv_data(struct tpm_chip *chip, u8 *buf, size_t count) { - int size = 0, burstcnt, len; + int size = 0, burstcnt, len, ret; struct i2c_client *client; client = (struct i2c_client *)TPM_VPRIV(chip); @@ -406,13 +406,15 @@ static int recv_data(struct tpm_chip *chip, u8 *buf, size_t count) wait_for_stat(chip, TPM_STS_DATA_AVAIL | TPM_STS_VALID, chip->vendor.timeout_c, - &chip->vendor.read_queue) - == 0) { + &chip->vendor.read_queue) == 0) { burstcnt = get_burstcount(chip); if (burstcnt < 0) return burstcnt; len = min_t(int, burstcnt, count - size); - I2C_READ_DATA(client, TPM_DATA_FIFO, buf + size, len); + ret = I2C_READ_DATA(client, TPM_DATA_FIFO, buf + size, len); + if (ret < 0) + return ret; + size += len; } return size; @@ -487,7 +489,7 @@ static int tpm_stm_i2c_send(struct tpm_chip *chip, unsigned char *buf, if (burstcnt < 0) return burstcnt; size = min_t(int, len - i - 1, burstcnt); - ret = I2C_WRITE_DATA(client, TPM_DATA_FIFO, buf, size); + ret = I2C_WRITE_DATA(client, TPM_DATA_FIFO, buf + i, size); if (ret < 0) goto out_err; |