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Merge branch 'topic/oss' into for-linus

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* topic/oss:
  ALSA: allocation may fail in	snd_pcm_oss_change_params()
  sound: vwsnd: Fix setting of cfgval and ctlval in li_setup_dma()
  sound: fix OSS MIDI output data loss
This commit is contained in:
Takashi Iwai 2009-09-10 15:32:58 +02:00
parent 9cd9f42767 cbbb05703d
commit fa28519002
3 changed files with 14 additions and 8 deletions
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9
sound/core/oss/pcm_oss.c
View file

@ -1043,10 +1043,15 @@ static int snd_pcm_oss_change_params(struct snd_pcm_substream *substream)
runtime->oss.channels = params_channels(params);
runtime->oss.rate = params_rate(params);
runtime->oss.params = 0;
runtime->oss.prepare = 1;
vfree(runtime->oss.buffer);
runtime->oss.buffer = vmalloc(runtime->oss.period_bytes);
if (!runtime->oss.buffer) {
err = -ENOMEM;
goto failure;
}
runtime->oss.params = 0;
runtime->oss.prepare = 1;
runtime->oss.buffer_used = 0;
if (runtime->dma_area)
snd_pcm_format_set_silence(runtime->format, runtime->dma_area, bytes_to_samples(runtime, runtime->dma_bytes));

7
sound/oss/midibuf.c
View file

@ -127,15 +127,16 @@ static void midi_poll(unsigned long dummy)
for (dev = 0; dev < num_midis; dev++)
if (midi_devs[dev] != NULL && midi_out_buf[dev] != NULL)
{
int ok = 1;
while (DATA_AVAIL(midi_out_buf[dev]) && ok)
while (DATA_AVAIL(midi_out_buf[dev]))
{
int ok;
int c = midi_out_buf[dev]->queue[midi_out_buf[dev]->head];
spin_unlock_irqrestore(&lock,flags);/* Give some time to others */
ok = midi_devs[dev]->outputc(dev, c);
spin_lock_irqsave(&lock, flags);
if (!ok)
break;
midi_out_buf[dev]->head = (midi_out_buf[dev]->head + 1) % MAX_QUEUE_SIZE;
midi_out_buf[dev]->len--;
}

6
sound/oss/vwsnd.c
View file

@ -628,7 +628,7 @@ static void li_setup_dma(dma_chan_t *chan,
ASSERT(!(buffer_paddr & 0xFF));
chan->baseval = (buffer_paddr >> 8) | 1 << (37 - 8);
chan->cfgval = (!LI_CCFG_LOCK |
chan->cfgval = ((chan->cfgval & ~LI_CCFG_LOCK) |
SHIFT_FIELD(desc->ad1843_slot, LI_CCFG_SLOT) |
desc->direction |
mode |
@ -638,9 +638,9 @@ static void li_setup_dma(dma_chan_t *chan,
tmask = 13 - fragshift; /* See Lithium DMA Notes above. */
ASSERT(size >= 2 && size <= 7);
ASSERT(tmask >= 1 && tmask <= 7);
chan->ctlval = (!LI_CCTL_RESET |
chan->ctlval = ((chan->ctlval & ~LI_CCTL_RESET) |
SHIFT_FIELD(size, LI_CCTL_SIZE) |
!LI_CCTL_DMA_ENABLE |
(chan->ctlval & ~LI_CCTL_DMA_ENABLE) |
SHIFT_FIELD(tmask, LI_CCTL_TMASK) |
SHIFT_FIELD(0, LI_CCTL_TPTR));