opl3sa2 forgot to initialise the spinlock. sound/isa/opl3sa2.c | 1 + 1 files changed, 1 insertion(+) diff -puN sound/isa/opl3sa2.c~opl3sa2-lock-init-fix sound/isa/opl3sa2.c --- 25/sound/isa/opl3sa2.c~opl3sa2-lock-init-fix 2003-08-13 05:03:32.000000000 -0700 +++ 25-akpm/sound/isa/opl3sa2.c 2003-08-13 05:04:06.000000000 -0700 @@ -752,6 +752,7 @@ static int __devinit snd_opl3sa2_probe(i err = -ENOMEM; goto __error; } + spin_lock_init(&chip->reg_lock); chip->irq = -1; if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) goto __error; _