[PATCH v2 2/5] ASoC: topology: Do not ignore route checks when parsing graphs

[Cezary Rojewski <cezary.rojewski@intel.com>]

One of the framework responsibilities is to ensure that the enumerated
DPCMs are valid i.e.: a valid BE is connected to a valid FE DAI. While
the are checks in soc-core.c and soc-pcm.c that verify this, a component
driver may attempt to workaround this by loading an invalid graph
through the topology file.

Be strict and fail topology loading when invalid graph is encountered.

Signed-off-by: Cezary Rojewski <cezary.rojewski@intel.com>
---
 sound/soc/soc-topology.c | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/sound/soc/soc-topology.c b/sound/soc/soc-topology.c
index d6d368837235..90ca37e008b3 100644
--- a/sound/soc/soc-topology.c
+++ b/sound/soc/soc-topology.c
@@ -1083,8 +1083,15 @@ static int soc_tplg_dapm_graph_elems_load(struct soc_tplg *tplg,
 			break;
 		}
 
-		/* add route, but keep going if some fail */
-		snd_soc_dapm_add_routes(dapm, route, 1);
+		ret = snd_soc_dapm_add_routes(dapm, route, 1);
+		if (ret) {
+			if (!dapm->card->disable_route_checks) {
+				dev_err(tplg->dev, "ASoC: dapm_add_routes failed: %d\n", ret);
+				break;
+			}
+			dev_info(tplg->dev,
+				 "ASoC: disable_route_checks set, ignoring dapm_add_routes errors\n");
+		}
 	}
 
 	return ret;
-- 
2.25.1