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Enable HW volume on hfp_hf and hsp_hs devices

Chow Loong Jin requested to merge hyperair/pipewire:hfp_hf-hwvol into master

On devices on the hfp_hf and hsp_hs profiles, HW volume appears to be disabled (unintentionally?) due to the rfcomm->volumes[*].active flag not getting set to true, which can result in microphone volumes on some devices getting stuck at an inaudible volume. Examples include:

  • Fiio BTA10
  • ATH M50xBT2

This change has been tested on both of the above devices and HW volume seems to work correctly with the change applied.

Edited by Chow Loong Jin

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