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ASoC: SOF: ipc4-control: Use the correct size for scontrol->ipc_control_data

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The size of the data behind scontrol->ipc_control_data is stored in
scontrol->size, use this when copying data for backup/restore.

Fixes: db38d86d0c ("ASoC: sof: Improve sof_ipc4_bytes_ext_put function")
Cc: stable@vger.kernel.org
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@linux.intel.com>
Reviewed-by: Seppo Ingalsuo <seppo.ingalsuo@linux.intel.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Reviewed-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Reviewed-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Link: https://patch.msgid.link/20251217143945.2667-4-peter.ujfalusi@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Peter Ujfalusi 2025-12-17 16:39:40 +02:00 committed by Mark Brown
parent a653820700
commit c1876fc33c
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
1 changed files with 3 additions and 3 deletions
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6
sound/soc/sof/ipc4-control.c
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@ -66,7 +66,7 @@ static int sof_ipc4_set_get_kcontrol_data(struct snd_sof_control *scontrol,
* configuration
*/
memcpy(scontrol->ipc_control_data, scontrol->old_ipc_control_data,
scontrol->max_size);
scontrol->size);
kfree(scontrol->old_ipc_control_data);
scontrol->old_ipc_control_data = NULL;
/* Send the last known good configuration to firmware */
@ -567,7 +567,7 @@ static int sof_ipc4_bytes_ext_put(struct snd_sof_control *scontrol,
if (!scontrol->old_ipc_control_data) {
/* Create a backup of the current, valid bytes control */
scontrol->old_ipc_control_data = kmemdup(scontrol->ipc_control_data,
scontrol->max_size, GFP_KERNEL);
scontrol->size, GFP_KERNEL);
if (!scontrol->old_ipc_control_data)
return -ENOMEM;
}
@ -575,7 +575,7 @@ static int sof_ipc4_bytes_ext_put(struct snd_sof_control *scontrol,
/* Copy the whole binary data which includes the ABI header and the payload */
if (copy_from_user(data, tlvd->tlv, header.length)) {
memcpy(scontrol->ipc_control_data, scontrol->old_ipc_control_data,
scontrol->max_size);
scontrol->size);
kfree(scontrol->old_ipc_control_data);
scontrol->old_ipc_control_data = NULL;
return -EFAULT;