ok, applying.
In the new year, Takashi Iwai wrote:
> At Wed, 3 Dec 2003 11:41:23 -0500 (EST),
> Jeremy Hall wrote:
> >
> > there also appears to be a delay of upwards of 2 seconds before it starts
> > playing
> >
> > but I don't have anything more in my logs.
>
> you're using the cvs version, right?
> then apply the patch below.
>
>
> Takashi
> Index: alsa-kernel/pci/ac97/ac97_pcm.c
> ===================================================================
> RCS file: /suse/tiwai/cvs/alsa/alsa-kernel/pci/ac97/ac97_pcm.c,v
> retrieving revision 1.8
> diff -u -r1.8 ac97_pcm.c
> --- alsa-kernel/pci/ac97/ac97_pcm.c 3 Dec 2003 13:37:25 -0000 1.8
> +++ alsa-kernel/pci/ac97/ac97_pcm.c 3 Dec 2003 15:58:24 -0000
> @@ -418,16 +418,19 @@
> continue;
> avail_slots[0][i] = get_pslots(codec, &rate_table[0][i]);
> avail_slots[1][i] = get_cslots(codec);
> + printk(KERN_DEBUG "checking codec %d, slots = 0x%x / 0x%x\n", i,
> avail_slots[0][i], avail_slots[1][i]);
> if (!(codec->scaps & AC97_SCAP_INDEP_SDIN)) {
> for (j = 0; j < i; j++) {
> if (bus->codec[j])
> avail_slots[1][i] &= ~avail_slots[1][j];
> }
> + printk(KERN_DEBUG "-> capture slots = 0x%x\n",
> avail_slots[1][i]);
> }
> }
> /* FIXME: add double rate allocation */
> /* first step - exclusive devices */
> for (i = 0; i < pcms_count; i++) {
> + printk(KERN_DEBUG "probing pcm %d\n", i);
> pcm = &pcms[i];
> rpcm = &rpcms[i];
> /* low-level driver thinks that it's more clever */
> @@ -445,19 +448,23 @@
> for (j = 0; j < 4 && slots; j++) {
> if (!bus->codec[j])
> continue;
> + printk(KERN_DEBUG ".. probing codec %d, slots = 0x%x\n", j,
> slots);
> rates = ~0;
> if (pcm->exclusive) {
> /* exclusive access */
> tmp = avail_slots[pcm->stream][j] & slots;
> + printk(KERN_DEBUG ".. tmp = 0x%x\n", tmp);
> for (k = 0; k < i; k++) {
> if (rpcm->stream == rpcms[k].stream)
> tmp &= ~rpcms[k].r[0].rslots[j];
> }
> + printk(KERN_DEBUG ".. tmp = 0x%x\n", tmp);
> if (tmp) {
> rpcm->r[0].rslots[j] = tmp;
> rpcm->r[0].codec[j] = bus->codec[j];
> rpcm->r[0].rate_table[j] =
> rate_table[pcm->stream][j];
> rates = get_rates(rpcm, j, tmp, 0);
> + printk(KERN_DEBUG ".. rslots = 0x%x,
> rate_table = %d, rates = 0x%x\n", tmp, rpcm->r[0].rate_table[j], rates);
> avail_slots[pcm->stream][j] &= ~tmp;
> }
> } else {
> @@ -476,6 +483,7 @@
> }
> if (rpcm->rates == ~0)
> rpcm->rates = 0; /* not used */
> + printk(KERN_DEBUG "--> slots = 0x%x, rates = 0x%x\n",
> rpcm->r[0].slots, rpcm->rates);
> }
> bus->pcms_count = pcms_count;
> bus->pcms = rpcms;
> @@ -500,6 +508,7 @@
> unsigned char reg;
> int err = 0;
>
> + printk(KERN_DEBUG "ac97_pcm_open: rate = %d, cfg = %d, slots = 0x%x\n", rate,
> cfg, slots);
> if (rate > 48000) /* FIXME: add support for double rate */
> return -EINVAL;
> bus = pcm->bus;
> @@ -548,9 +557,10 @@
> }
> if (reg_ok & (1 << (reg - AC97_PCM_FRONT_DAC_RATE)))
> continue;
> + printk(KERN_DEBUG "setting ac97 reg 0x%x to rate
> %d\n", reg, rate);
> err = snd_ac97_set_rate(pcm->r[r].codec[cidx], reg,
> rate);
> if (err < 0)
> - snd_printk(KERN_ERR "error in
> snd_ac97_set_rate: cidx=%d, reg=0x%x, rate=%d\n, err=%d", cidx, reg, rate, err);
> + snd_printk(KERN_ERR "error in
> snd_ac97_set_rate: cidx=%d, reg=0x%x, rate=%d, err=%d\n", cidx, reg, rate, err);
> else
> reg_ok |= (1 << (reg -
> AC97_PCM_FRONT_DAC_RATE));
> }
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