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ASoC: SOF: ipc4-topology: Allow bytes controls without initial payload 

It is unexpected, but allowed to have no initial payload for a bytes
control and the code is prepared to handle this case, but the size check
missed this corner case.

Update the check for minimal size to allow the initial size to be 0.

Cc: stable@vger.kernel.org
Fixes: a653820700 ("ASoC: SOF: ipc4-topology: Correct the allocation size for bytes controls")
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@linux.intel.com>
Reviewed-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Reviewed-by: Liam Girdwood <liam.r.girdwood@intel.com>
Reviewed-by: Seppo Ingalsuo <seppo.ingalsuo@linux.intel.com>
Reviewed-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Link: https://patch.msgid.link/20260326075618.1603-1-peter.ujfalusi@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
master
Peter Ujfalusi 2026-03-26 09:56:18 +02:00 committed by Mark Brown
parent c6eea4ff84
commit d40a198e2b
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1 changed files with 1 additions and 1 deletions
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2
sound/soc/sof/ipc4-topology.c
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@ -2950,7 +2950,7 @@ static int sof_ipc4_control_load_bytes(struct snd_sof_dev *sdev, struct snd_sof_
return -EINVAL;
}
if (scontrol->priv_size < sizeof(struct sof_abi_hdr)) {
if (scontrol->priv_size && scontrol->priv_size < sizeof(struct sof_abi_hdr)) {
dev_err(sdev->dev,
"bytes control %s initial data size %zu is insufficient.\n",
scontrol->name, scontrol->priv_size);