ALSA: asihpi - Fix uninitialized variable

Initialize prev_ctl properly before reference:
  sound/pci/asihpi/asihpi.c: In function ‘snd_card_asihpi_mixer_new’:
  sound/pci/asihpi/asihpi.c:2568:30: warning: ‘prev_ctl.dst_node_index’ may be used uninitialized in this function

Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 3 insertions, 0 deletions

diff --git a/sound/pci/asihpi/asihpi.c b/sound/pci/asihpi/asihpi.c
index f74c7372b3d1..1db586af4f9c 100644
--- a/sound/pci/asihpi/asihpi.c
+++ b/sound/pci/asihpi/asihpi.c
@@ -2578,6 +2578,9 @@ static int __devinit snd_card_asihpi_mixer_new(struct snd_card_asihpi *asihpi)
         if (err)
                 return -err;
 
+        memset(&prev_ctl, 0, sizeof(prev_ctl));
+        prev_ctl.control_type = -1;
+
         for (idx = 0; idx < 2000; idx++) {
                 err = hpi_mixer_get_control_by_index(
                                 ss, asihpi->h_mixer,