[PATCH 3/3] ASoC: SOF: Intel: disable IMR boot when resuming from ACPI S4 and S5 states

[Pierre-Louis Bossart]

The IMR was assumed to be preserved when suspending to S4 and S5
states, but community reports invalidate that assumption, the hardware
seems to be powered off and the IMR memory content cleared.

Make sure regular boot with firmware download is used for S4 and S5.

BugLink: https://github.com/thesofproject/sof/issues/5892
Fixes: 5fb5f51185126 ("ASoC: SOF: Intel: hda-loader: add IMR restore support")
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart at linux.intel.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan at linux.intel.com>
Reviewed-by: Péter Ujfalusi <peter.ujfalusi at linux.intel.com>
---
 sound/soc/sof/intel/hda-loader.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/sound/soc/sof/intel/hda-loader.c b/sound/soc/sof/intel/hda-loader.c
index bca9dc5917f42..819b3b08c6557 100644
--- a/sound/soc/sof/intel/hda-loader.c
+++ b/sound/soc/sof/intel/hda-loader.c
@@ -395,7 +395,8 @@ int hda_dsp_cl_boot_firmware(struct snd_sof_dev *sdev)
 	struct snd_dma_buffer dmab;
 	int ret, ret1, i;
 
-	if (hda->imrboot_supported && !sdev->first_boot) {
+	if (sdev->system_suspend_target < SOF_SUSPEND_S4 &&
+	    hda->imrboot_supported && !sdev->first_boot) {
 		dev_dbg(sdev->dev, "IMR restore supported, booting from IMR directly\n");
 		hda->boot_iteration = 0;
 		ret = hda_dsp_boot_imr(sdev);
-- 
2.34.1