ASoC: Add a sanity check before using dai driver name

The dai driver's name is allowed to be NULL. So add a sanity check for
that.

Signed-off-by: Jeffy Chen <[email protected]>
Reported-by: Donglin Peng <[email protected]>
Signed-off-by: Mark Brown <[email protected]>

diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c
index 6fab0ff213ef16b5afd533c60a829b1d31a14752..74c17068bb116059639af33103c24b9fd916e654 100644 (file)
--- a/sound/soc/soc-core.c
+++ b/sound/soc/soc-core.c
@@ -1029,7 +1029,8 @@ struct snd_soc_dai *snd_soc_find_dai(
                        continue;
                list_for_each_entry(dai, &component->dai_list, list) {
                        if (dlc->dai_name && strcmp(dai->name, dlc->dai_name)
-                           && strcmp(dai->driver->name, dlc->dai_name))
+                           && (!dai->driver->name
+                               || strcmp(dai->driver->name, dlc->dai_name)))
                                continue;
 
                        return dai;