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ASoC: rt5514-spi: Let the buf_size to align with period_bytes

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The patch lets the buf_size to align with period_bytes to prevent the
buffer reading over the real size of the DSP buffer and also avoid to
calculate the wrong size of remaining data.

Signed-off-by: Oder Chiou <oder_chiou@realtek.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Oder Chiou 2017-11-08 19:21:47 +08:00 committed by Mark Brown
parent 28aef24d72
commit c4a71ff78e
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GPG Key ID: 24D68B725D5487D0
1 changed files with 9 additions and 0 deletions
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9
sound/soc/codecs/rt5514-spi.c
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@ -147,8 +147,13 @@ done:
static void rt5514_schedule_copy(struct rt5514_dsp *rt5514_dsp)
{
size_t period_bytes;
u8 buf[8];
if (!rt5514_dsp->substream)
return;
period_bytes = snd_pcm_lib_period_bytes(rt5514_dsp->substream);
rt5514_dsp->get_size = 0;
/**
@ -176,6 +181,10 @@ static void rt5514_schedule_copy(struct rt5514_dsp *rt5514_dsp)
rt5514_dsp->buf_size = rt5514_dsp->buf_limit - rt5514_dsp->buf_base;
if (rt5514_dsp->buf_size % period_bytes)
rt5514_dsp->buf_size = (rt5514_dsp->buf_size / period_bytes) *
period_bytes;
if (rt5514_dsp->buf_base && rt5514_dsp->buf_limit &&
rt5514_dsp->buf_rp && rt5514_dsp->buf_size)
schedule_delayed_work(&rt5514_dsp->copy_work, 0);