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authorOder Chiou <oder_chiou@realtek.com>2017-11-08 14:21:47 +0300
committerMark Brown <broonie@kernel.org>2017-11-08 14:26:56 +0300
commitc4a71ff78e668a75a4a3cfd9ebbfbd5cbe8da5fb (patch)
tree8a8b9e7d10cf4e2532a0892b8e0cb0715d112ec3 /sound/soc/codecs/rt5514-spi.c
parent28aef24d726f8d503fde24ccf8a14b214355cfb5 (diff)
downloadlinux-c4a71ff78e668a75a4a3cfd9ebbfbd5cbe8da5fb.tar.xz
ASoC: rt5514-spi: Let the buf_size to align with period_bytes
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>
Diffstat (limited to 'sound/soc/codecs/rt5514-spi.c')
-rw-r--r--sound/soc/codecs/rt5514-spi.c9
1 files changed, 9 insertions, 0 deletions
diff --git a/sound/soc/codecs/rt5514-spi.c b/sound/soc/codecs/rt5514-spi.c
index 12f2ecf3a4fe..0896817ffc3f 100644
--- a/sound/soc/codecs/rt5514-spi.c
+++ b/sound/soc/codecs/rt5514-spi.c
@@ -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);