Question about hdac_ext_link ref_count management

Hi Takashi,

While exploring some power optimizations on Intel platforms, I noticed that the hdac_ext_link ref_count is incremented during codec probe in hdac_hda_codec_probe() and the ref_count is held until the codec device is removed.

I was wondering if it would be possible to call the get/put for the hdac_ext_link in the codec runtime suspend/resume callbacks so that the link is powered up only when the link is in use. Are there any downsides to doing this?

Thanks, Ranjani