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

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commit d40a198e2b upstream.

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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Peter Ujfalusi
2026-04-02 13:07:24 +02:00
committed by Greg Kroah-Hartman
parent a2842de685
commit 9e7f353710
1 changed files with 1 additions and 1 deletions
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sound/soc/sof/ipc4-topology.c
+1 -1
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@@ -2203,7 +2203,7 @@ 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);