diff options
Diffstat (limited to 'drivers/char')
| -rw-r--r-- | drivers/char/tpm/st33zp24/st33zp24.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/drivers/char/tpm/st33zp24/st33zp24.c b/drivers/char/tpm/st33zp24/st33zp24.c index 03f254384585..8d626784cd8d 100644 --- a/drivers/char/tpm/st33zp24/st33zp24.c +++ b/drivers/char/tpm/st33zp24/st33zp24.c @@ -393,7 +393,7 @@ static irqreturn_t tpm_ioserirq_handler(int irq, void *dev_id) static int st33zp24_send(struct tpm_chip *chip, unsigned char *buf, size_t len) { - u32 status, i, size; + u32 status, i, size, ordinal; int burstcnt = 0; int ret; u8 data; @@ -456,6 +456,16 @@ static int st33zp24_send(struct tpm_chip *chip, unsigned char *buf, if (ret < 0) goto out_err; + if (chip->vendor.irq) { + ordinal = be32_to_cpu(*((__be32 *) (buf + 6))); + + ret = wait_for_stat(chip, TPM_STS_DATA_AVAIL | TPM_STS_VALID, + tpm_calc_ordinal_duration(chip, ordinal), + &chip->vendor.read_queue, false); + if (ret < 0) + goto out_err; + } + return len; out_err: st33zp24_cancel(chip); |