ALSA: hda: dynamic jack id

This patch duplicates the jack->id pointer with kstrdup() to prevent
scoping issues from calling autoprobing functions from the HDA section.

Signed-off-by: Matthew Ranostay <mranostay@embeddedalley.com>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 2 insertions, 1 deletions

diff --git a/sound/core/jack.c b/sound/core/jack.c
index c4bb9bad313..438445f77d6 100644
--- a/sound/core/jack.c
+++ b/sound/core/jack.c
@@ -34,6 +34,7 @@ static int snd_jack_dev_free(struct snd_device *device)
         else
                 input_free_device(jack->input_dev);
 
+        kfree(jack->id);
         kfree(jack);
 
         return 0;
@@ -87,7 +88,7 @@ int snd_jack_new(struct snd_card *card, const char *id, int type,
         if (jack == NULL)
                 return -ENOMEM;
 
-        jack->id = id;
+        jack->id = kstrdup(id, GFP_KERNEL);
 
         jack->input_dev = input_allocate_device();
         if (jack->input_dev == NULL) {