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| author | Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com> | 2019-02-08 17:30:59 +0100 |
|---|---|---|
| committer | Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com> | 2019-02-13 08:47:00 +0100 |
| commit | 442601e87a4769a8daba4976ec3afa5222ca211d (patch) | |
| tree | 4f8bc44d058a78ed0c00e56dc8cfda41af356eb0 /drivers/char | |
| parent | tpm: Unify the send callback behaviour (diff) | |
| download | linux-442601e87a4769a8daba4976ec3afa5222ca211d.tar.xz linux-442601e87a4769a8daba4976ec3afa5222ca211d.zip | |
tpm/tpm_i2c_atmel: Return -E2BIG when the transfer is incomplete
Return -E2BIG when the transfer is incomplete. The upper layer does
not retry, so not doing that is incorrect behaviour.
Cc: stable@vger.kernel.org
Fixes: a2871c62e186 ("tpm: Add support for Atmel I2C TPMs")
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Reviewed-by: Stefan Berger <stefanb@linux.ibm.com>
Reviewed-by: Jerry Snitselaar <jsnitsel@redhat.com>
Diffstat (limited to 'drivers/char')
| -rw-r--r-- | drivers/char/tpm/tpm_i2c_atmel.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/char/tpm/tpm_i2c_atmel.c b/drivers/char/tpm/tpm_i2c_atmel.c index 32a8e27c5382..cc4e642d3180 100644 --- a/drivers/char/tpm/tpm_i2c_atmel.c +++ b/drivers/char/tpm/tpm_i2c_atmel.c @@ -69,6 +69,10 @@ static int i2c_atmel_send(struct tpm_chip *chip, u8 *buf, size_t len) if (status < 0) return status; + /* The upper layer does not support incomplete sends. */ + if (status != len) + return -E2BIG; + return 0; } |