ASoC: when removing a CPU DAI, clean up its DAPM context
When a standalone CPU DAI (one not part of a CODEC) is probed, widgets are created for it. Add a call to snd_soc_dapm_free() in order to clean these up when the CPU DAI is removed. In order for snd_soc_dapm_free() to work, the CPU DAI's DAPM context's list member must be initialized, since snd_soc_dapm_free() removes that from the list it's part of. Add it to the card's list of DAPM contexts. Signed-off-by: NStephen Warren <swarren@nvidia.com> Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
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