ASoC: fsl_audmix: Add spin lock to protect tdms
Shengjiu Wang authored
Audmix support two substream, When two substream start
to run, the trigger function may be called by two substream
in same time, that the priv->tdms may be updated wrongly.

The expected priv->tdms is 0x3, but sometimes the
result is 0x2, or 0x1.

Fixes: be1df61c

 ("ASoC: fsl: Add Audio Mixer CPU DAI driver")
Signed-off-by: default avatarShengjiu Wang <shengjiu.wang@nxp.com>
Acked-by: default avatarNicolin Chen <nicoleotsuka@gmail.com>
Reviewed-by: default avatarDaniel Baluta <daniel.baluta@nxp.com>
Link: https://lore.kernel.org/r/1e706afe53fdd1fbbbc79277c48a98f8416ba873.1573458378.git.shengjiu.wang@nxp.com

Signed-off-by: default avatarMark Brown <broonie@kernel.org>
Cc: <stable@vger.kernel.org>
fe965096
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