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[ALSA] Remove PCM xfer_align sw params

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The xfer_align sw_params parameter has never been used in a sane manner,
and no one understands what this does exactly.  The current
implementation looks also buggy because it allows write of shorter size
than xfer_align.  So, if you do partial writes, the write isn't actually
aligned at all.
Removing this parameter will make some pcm_lib_* code more readable
(and less buggy).

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
This commit is contained in:
Takashi Iwai
2008-01-08 18:05:26 +01:00
committed by Jaroslav Kysela
parent fa5717f209
commit d948035a92
7 changed files with 5 additions and 32 deletions
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sound/core/oss/pcm_oss.c
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@@ -988,7 +988,6 @@ static int snd_pcm_oss_change_params(struct snd_pcm_substream *substream)
sw_params->sleep_min = 0;
sw_params->avail_min = substream->stream == SNDRV_PCM_STREAM_PLAYBACK ?
1 : runtime->period_size;
sw_params->xfer_align = 1;
if (atomic_read(&substream->mmap_count) ||
substream->oss.setup.nosilence) {
sw_params->silence_threshold = 0;