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[media] cec: return -EPERM when no LAs are configured
The CEC_TRANSMIT ioctl now returns -EPERM if an attempt is made to transmit a message for an unconfigured adapter (i.e. userspace never called CEC_ADAP_S_LOG_ADDRS). This differentiates this case from when LAs are configured, but no physical address is set. In that case -ENONET is returned. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
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1 changed files with 3 additions and 1 deletions
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@ -198,7 +198,9 @@ static long cec_transmit(struct cec_adapter *adap, struct cec_fh *fh,
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return -EINVAL;
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mutex_lock(&adap->lock);
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if (adap->is_configuring)
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if (adap->log_addrs.num_log_addrs == 0)
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err = -EPERM;
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else if (adap->is_configuring)
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err = -ENONET;
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else if (!adap->is_configured && (msg.msg[0] != 0xf0 || msg.reply))
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err = -ENONET;
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