ALSA: mtpav - Fix initial value for input hwport

Fix the initial value for input hwport.  The old value (-1) may cause
Oops when an realtime MIDI byte is received before the input port is
explicitly given.
Instead, now it's set to the broadcasting as default.

Tested-by: Holger Dehnhardt <dehnhardt@ahdehnhardt.de>
Cc: <stable@kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 2 insertions, 1 deletions

diff --git a/sound/drivers/mtpav.c b/sound/drivers/mtpav.c
index 5b89c0883d60..48b64e6b2670 100644
--- a/sound/drivers/mtpav.c
+++ b/sound/drivers/mtpav.c
@@ -706,7 +706,6 @@ static int __devinit snd_mtpav_probe(struct platform_device *dev)
         mtp_card->card = card;
         mtp_card->irq = -1;
         mtp_card->share_irq = 0;
-        mtp_card->inmidiport = 0xffffffff;
         mtp_card->inmidistate = 0;
         mtp_card->outmidihwport = 0xffffffff;
         init_timer(&mtp_card->timer);
@@ -719,6 +718,8 @@ static int __devinit snd_mtpav_probe(struct platform_device *dev)
         if (err < 0)
                 goto __error;
 
+        mtp_card->inmidiport = mtp_card->num_ports + MTPAV_PIDX_BROADCAST;
+
         err = snd_mtpav_get_ISA(mtp_card);
         if (err < 0)
                 goto __error;