[ALSA] Remove PCM xfer_align sw params

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>

1 files changed, 0 insertions, 1 deletions

diff --git a/sound/core/oss/pcm_oss.c b/sound/core/oss/pcm_oss.c
index d0c4ceb9f0b4..be089ccd736d 100644
--- a/sound/core/oss/pcm_oss.c
+++ b/sound/core/oss/pcm_oss.c
@@ -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;