[PATCH] ASoC: SOF - topology - do not change the link trigger order for pre-1.4 firmware

[Jaroslav Kysela]

This patch is for SOF v1.3 firmware. The DSP firmware will crash (DSP oops)
without this patch. The 1.4.1 firmare has this issue fixed.

The ABI version is used for the comparison, because the firmware version
for the firmware files before 1.4.2 was not set properly (git hash was
used).

BugLink: https://github.com/thesofproject/sof/issues/2102
Signed-off-by: Jaroslav Kysela <perex at perex.cz>
Cc: Pierre-Louis Bossart <pierre-louis.bossart at linux.intel.com>
Cc: Mark Brown <broonie at kernel.org>
---
 sound/soc/sof/topology.c | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/sound/soc/sof/topology.c b/sound/soc/sof/topology.c
index 9f4f8868b386..58ff4766b47b 100644
--- a/sound/soc/sof/topology.c
+++ b/sound/soc/sof/topology.c
@@ -3111,6 +3111,7 @@ static int sof_link_load(struct snd_soc_component *scomp, int index,
 	struct snd_soc_tplg_private *private = &cfg->priv;
 	struct sof_ipc_dai_config config;
 	struct snd_soc_tplg_hw_config *hw_config;
+	struct sof_ipc_fw_version *v = &sdev->fw_ready.version;
 	int num_hw_configs;
 	int ret;
 	int i = 0;
@@ -3128,9 +3129,12 @@ static int sof_link_load(struct snd_soc_component *scomp, int index,
 	if (!link->no_pcm) {
 		link->nonatomic = true;
 
-		/* set trigger order */
-		link->trigger[0] = SND_SOC_DPCM_TRIGGER_POST;
-		link->trigger[1] = SND_SOC_DPCM_TRIGGER_POST;
+		/* this causes DSP panic on firmware v1.3 */
+		if (v->abi_version > SOF_ABI_VER(3, 7, 0)) {
+			/* set trigger order */
+			link->trigger[0] = SND_SOC_DPCM_TRIGGER_POST;
+			link->trigger[1] = SND_SOC_DPCM_TRIGGER_POST;
+		}
 
 		/* nothing more to do for FE dai links */
 		return 0;
-- 
2.24.1