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ALSA: pcm: use exit controlled loop in snd_pcm_playback_silence()

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We already know that `frames` is greater than zero, because we just
checked it. So we don't need to check the loop condition on the first
iteration.

Signed-off-by: Oswald Buddenhagen <oswald.buddenhagen@gmx.de>
Link: https://lore.kernel.org/r/20230505155244.2312199-7-oswald.buddenhagen@gmx.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Oswald Buddenhagen 2023-05-05 17:52:44 +02:00 committed by Takashi Iwai
parent 6ffa6f397e
commit ee2dd70347
1 changed files with 2 additions and 2 deletions
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4
sound/core/pcm_lib.c
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@ -123,14 +123,14 @@ void snd_pcm_playback_silence(struct snd_pcm_substream *substream, snd_pcm_ufram
if (frames == 0)
return;
ofs = (runtime->silence_start + runtime->silence_filled) % runtime->buffer_size;
while (frames > 0) {
do {
transfer = ofs + frames > runtime->buffer_size ? runtime->buffer_size - ofs : frames;
err = fill_silence_frames(substream, ofs, transfer);
snd_BUG_ON(err < 0);
runtime->silence_filled += transfer;
frames -= transfer;
ofs = 0;
}
} while (frames > 0);
snd_pcm_dma_buffer_sync(substream, SNDRV_DMA_SYNC_DEVICE);
}