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tpm: Unify the send callback behaviour

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The send() callback should never return length as it does not in every
driver except tpm_crb in the success case. The reason is that the main
transmit functionality only cares about whether the transmit was
successful or not and ignores the count completely.

Suggested-by: Stefan Berger <stefanb@linux.ibm.com>
Cc: stable@vger.kernel.org
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>
Tested-by: Alexander Steffen <Alexander.Steffen@infineon.com>
This commit is contained in:
Jarkko Sakkinen
2019-02-08 18:30:58 +02:00
parent 6ea3dfe1e0
commit f5595f5baa
12 changed files with 28 additions and 16 deletions
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2
drivers/char/tpm/xen-tpmfront.c
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@@ -173,7 +173,7 @@ static int vtpm_send(struct tpm_chip *chip, u8 *buf, size_t count)
return -ETIME;
}
return count;
return 0;
}
static int vtpm_recv(struct tpm_chip *chip, u8 *buf, size_t count)