ASoC: SOF: Intel: hda-loader: use small buffer for iccmax stream

The data received via iccmax stream is not used anywhere, so no need to
allocate a big DMA buffer for it. This is especially important as the
allocation is done even in cases where reload of the firmware is skipped
and execution happens directly from the firmware stored in IMR.

BugLink: thesofproject#3844
Signed-off-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>

sound/soc/sof/intel/hda-loader.c

@@ -336,8 +336,11 @@ int hda_dsp_cl_boot_firmware_iccmax(struct snd_sof_dev *sdev)
 
 	stripped_firmware.size = plat_data->fw->size - plat_data->fw_offset;
 
-	/* prepare capture stream for ICCMAX */
-	iccmax_stream = hda_cl_stream_prepare(sdev, HDA_CL_STREAM_FORMAT, stripped_firmware.size,
+	/*
+	 * Prepare capture stream for ICCMAX. We do not need to store
+	 * the data, so use a buffer of PAGE_SIZE for receiving.
+	 */
+	iccmax_stream = hda_cl_stream_prepare(sdev, HDA_CL_STREAM_FORMAT, PAGE_SIZE,
 					      &dmab_bdl, SNDRV_PCM_STREAM_CAPTURE);
 	if (IS_ERR(iccmax_stream)) {
 		dev_err(sdev->dev, "error: dma prepare for ICCMAX stream failed\n");