diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/tpm/slb9635_i2c/tpm_tis_i2c.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/drivers/tpm/slb9635_i2c/tpm_tis_i2c.c b/drivers/tpm/slb9635_i2c/tpm_tis_i2c.c index e1b60565e4..c0d56dc503 100644 --- a/drivers/tpm/slb9635_i2c/tpm_tis_i2c.c +++ b/drivers/tpm/slb9635_i2c/tpm_tis_i2c.c @@ -77,6 +77,8 @@ static struct tpm_inf_dev tpm_dev = { .addr = TPM_I2C_ADDR }; +static int burst_count; /* maximum number of bytes in one transfer */ + struct op_stats { int ok; int fail; @@ -377,7 +379,7 @@ static int recv_data(struct tpm_chip *chip, u8 *buf, size_t count) int rc; while (size < count) { - burstcnt = get_burstcount(chip); + burstcnt = burst_count; /* limit received data to max. left */ if (burstcnt > (count - size)) @@ -468,7 +470,7 @@ static int tpm_tis_i2c_send(struct tpm_chip *chip, u8 *buf, size_t len) } } - burstcnt = get_burstcount(chip); + burstcnt = burst_count; while (count < len) { if (burstcnt > (len - count)) @@ -577,6 +579,9 @@ int tpm_vendor_init(uint32_t dev_addr) dev_info(dev, "1.2 TPM (device-id 0x%X)\n", vendor >> 16); + burst_count = get_burstcount(chip); + debug("burst count = %d\n", burst_count); + /* * A timeout query to TPM can be placed here. * Standard timeout values are used so far |