ASoC: core: On resume also check the soc device state

Check the card->codec on soc_resume to detect if the soc
device is properly initialized.
If the card->codec is NULL, than do not continue the resume
operation, since the device is not initialized properly.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@nokia.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

1 files changed, 6 insertions, 0 deletions

diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c
index e1c0336868e1..a03bac943aaf 100644
--- a/sound/soc/soc-core.c
+++ b/sound/soc/soc-core.c
@@ -963,6 +963,12 @@ static int soc_resume(struct device *dev)
         struct snd_soc_card *card = socdev->card;
         struct snd_soc_dai *cpu_dai = card->dai_link[0].cpu_dai;
 
+        /* If the initialization of this soc device failed, there is no codec
+         * associated with it. Just bail out in this case.
+         */
+        if (!card->codec)
+                return 0;
+
         /* AC97 devices might have other drivers hanging off them so
          * need to resume immediately.  Other drivers don't have that
          * problem and may take a substantial amount of time to resume