On Fri, Feb 08, 2019 at 07:05:26AM -0500, Stefan Berger wrote:
> See my comment on [PATCH v11 08/16]. It needs to be added in that patch
> since otherwise rc holds a non-zero value on function exit, which is wrong
> at that point.

The snippet in question:

rc = chip->ops->send(chip, buf, count);
if (rc < 0) {
        if (rc != -EPIPE)
                dev_err(&chip->dev,
                        "%s: tpm_send: error %d\n", __func__, rc);
        return rc;
}

if (chip->flags & TPM_CHIP_FLAG_IRQ)
        goto out_recv;

'send()' ought to return zero on success case.

This is how the snippet was before applying any patches scheduled for
v5.1:

rc = chip->ops->send(chip, buf, count);
if (rc < 0) {
        if (rc != -EPIPE)
                dev_err(&chip->dev,
                        "%s: tpm_send: error %d\n", __func__, rc);
        return rc;
}

if (chip->flags & TPM_CHIP_FLAG_IRQ)
        goto out_recv;

Does not compute.

/Jarkko

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