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Diffstat (limited to 'src/drivers/i2c/tpm/tis.c')
| -rw-r--r-- | src/drivers/i2c/tpm/tis.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/src/drivers/i2c/tpm/tis.c b/src/drivers/i2c/tpm/tis.c index c6173b47ed..ce0de8953b 100644 --- a/src/drivers/i2c/tpm/tis.c +++ b/src/drivers/i2c/tpm/tis.c @@ -114,6 +114,9 @@ static ssize_t tpm_transmit(const uint8_t *buf, size_t bufsiz) memcpy(&ordinal, buf + TPM_CMD_ORDINAL_BYTE, sizeof(ordinal)); ordinal = be32_to_cpu(ordinal); + if (!chip->vendor.send || !chip->vendor.status || !chip->vendor.cancel) + return -1; + if (count == 0) { printk(BIOS_DEBUG, "tpm_transmit: no data\n"); return -1; |