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

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

Fixes: 03f5376 ("ASoC: sof: Improve sof_ipc4_bytes_ext_put function")
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@linux.intel.com>

Author: ujfalusi

sound/soc/sof/ipc4-control.c

@@ -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 */
@@ -567,15 +567,15 @@ 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;
 	}
 
 	/* 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;