diff options
| -rw-r--r-- | drivers/char/tpm/tpm.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/char/tpm/tpm.c b/drivers/char/tpm/tpm.c index 6b5a0e0127a7..aa899cec6b3f 100644 --- a/drivers/char/tpm/tpm.c +++ b/drivers/char/tpm/tpm.c @@ -557,6 +557,13 @@ duration: usecs_to_jiffies(be32_to_cpu (*((__be32 *) (data + TPM_GET_CAP_RET_UINT32_1_IDX)))); + /* The Broadcom BCM0102 chipset in a Dell Latitude D820 gets the above + * value wrong and apparently reports msecs rather than usecs. So we + * fix up the resulting too-small TPM_SHORT value to make things work. + */ + if (chip->vendor.duration[TPM_SHORT] < (HZ/100)) + chip->vendor.duration[TPM_SHORT] = HZ; + chip->vendor.duration[TPM_MEDIUM] = usecs_to_jiffies(be32_to_cpu (*((__be32 *) (data + |