[PATCH 2/2] ASoC: SOF: Intel: hda: Skip IMR boot after a firmware crash or boot failure

[Peter Ujfalusi]

To make sure that we start from a clean state next time when the DSP is
powered up after a firmware crash or boot failure we must skip the IMR
booting attempt.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi at linux.intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart at linux.intel.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan at linux.intel.com>
---
 sound/soc/sof/intel/hda-dsp.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/sound/soc/sof/intel/hda-dsp.c b/sound/soc/sof/intel/hda-dsp.c
index eddfd77ad90f..671c3e02d7df 100644
--- a/sound/soc/sof/intel/hda-dsp.c
+++ b/sound/soc/sof/intel/hda-dsp.c
@@ -620,8 +620,13 @@ static int hda_suspend(struct snd_sof_dev *sdev, bool runtime_suspend)
 	/*
 	 * The memory used for IMR boot loses its content in deeper than S3 state
 	 * We must not try IMR boot on next power up (as it will fail).
+	 *
+	 * In case of firmware crash or boot failure set the skip_imr_boot to true
+	 * as well in order to try to re-load the firmware to do a 'cold' boot.
 	 */
-	if (sdev->system_suspend_target > SOF_SUSPEND_S3)
+	if (sdev->system_suspend_target > SOF_SUSPEND_S3 ||
+	    sdev->fw_state == SOF_FW_CRASHED ||
+	    sdev->fw_state == SOF_FW_BOOT_FAILED)
 		hda->skip_imr_boot = true;
 
 	hda_sdw_int_enable(sdev, false);
-- 
2.37.0