ASoC: Fix resource leak if soc_register_ac97_dai_link failed

Properly free the resources in the case of soc_register_ac97_dai_link failure.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c
index 02ae7bea3b50401fbace05991b7472f6d6633c92..85b7d548f1675f14c1a2065bbcffcf7d229a2e27 100644 (file)
--- a/sound/soc/soc-core.c
+++ b/sound/soc/soc-core.c
@@ -1619,12 +1619,14 @@ static void snd_soc_instantiate_card(struct snd_soc_card *card)
 #ifdef CONFIG_SND_SOC_AC97_BUS
        /* register any AC97 codecs */
        for (i = 0; i < card->num_rtd; i++) {
-                       ret = soc_register_ac97_dai_link(&card->rtd[i]);
-                       if (ret < 0) {
-                               printk(KERN_ERR "asoc: failed to register AC97 %s\n", card->name);
-                               goto probe_dai_err;
-                       }
+               ret = soc_register_ac97_dai_link(&card->rtd[i]);
+               if (ret < 0) {
+                       printk(KERN_ERR "asoc: failed to register AC97 %s\n", card->name);
+                       while (--i >= 0)
+                               soc_unregister_ac97_dai_link(&card->rtd[i]);
+                       goto probe_dai_err;
                }
+       }
 #endif
 
        card->instantiated = 1;