diff options
| author | Nicolin Chen <Guangyu.Chen@freescale.com> | 2014-03-25 11:46:35 +0800 |
|---|---|---|
| committer | Nicolin Chen <Guangyu.Chen@freescale.com> | 2014-03-27 19:20:00 +0800 |
| commit | 5d0d4e1558fa0c235691436e1c5d26d9c8950775 (patch) | |
| tree | 90c4a0f7d56109e53ff4dcff68ee5ad394b31093 /sound | |
| parent | aca6d0c4c96d658021bda4b5a4e454076e27e9f2 (diff) | |
ENGR00305624-2 ASoC: imx-hdmi-dma: Correct the appl pointer
We might not be able to get appl_ptr, so we estimated it by using hw_ptr,
while the distance between then should not be 2 * priv->period_bytes
initially but 8 * priv->period_bytes as we pri-filled one entire buffer
size at the beginning. The driver's memory access might be overlapped
with ALSA's buffer updating. So this patch fixes this inaccurate distance.
Acked-by: Wang Shengjiu <b02247@freescale.com>
Signed-off-by: Nicolin Chen <Guangyu.Chen@freescale.com>
Diffstat (limited to 'sound')
| -rw-r--r-- | sound/soc/fsl/imx-hdmi-dma.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/sound/soc/fsl/imx-hdmi-dma.c b/sound/soc/fsl/imx-hdmi-dma.c index 8f3e79845fa6..d0e907a07790 100644 --- a/sound/soc/fsl/imx-hdmi-dma.c +++ b/sound/soc/fsl/imx-hdmi-dma.c @@ -447,7 +447,7 @@ static void hdmi_dma_data_copy(struct snd_pcm_substream *substream, appl_bytes = frames_to_bytes(runtime, runtime->status->hw_ptr); if (type == 'p') - appl_bytes += 2 * priv->period_bytes; + appl_bytes += 8 * priv->period_bytes; offset = appl_bytes % priv->buffer_bytes; switch (type) { |