diff options
Diffstat (limited to 'drivers/char/tpm/tpm_i2c_atmel.c')
-rw-r--r-- | drivers/char/tpm/tpm_i2c_atmel.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/drivers/char/tpm/tpm_i2c_atmel.c b/drivers/char/tpm/tpm_i2c_atmel.c index 503a85ae176c..0ea430cc606f 100644 --- a/drivers/char/tpm/tpm_i2c_atmel.c +++ b/drivers/char/tpm/tpm_i2c_atmel.c @@ -65,7 +65,15 @@ static int i2c_atmel_send(struct tpm_chip *chip, u8 *buf, size_t len) dev_dbg(chip->dev, "%s(buf=%*ph len=%0zx) -> sts=%d\n", __func__, (int)min_t(size_t, 64, len), buf, len, status); - return status; + + if (status < 0) + return status; + + /* The upper layer does not support incomplete sends. */ + if (status != len) + return -E2BIG; + + return 0; } static int i2c_atmel_recv(struct tpm_chip *chip, u8 *buf, size_t count) |