Maybe it's harmless but I am tired of seeing it without understanding if it's a real issue or not. This message occurs before each suspend
[ 277.308258] sof-audio sof-audio: tag 1 not opened!
[ 277.308309] sof-audio sof-audio: ipc tx: 0x40010000: GLB_PM_MSG: CTX_SAVE
[ 277.308481] sof-audio sof-audio: ipc tx succeeded: 0x40010000: GLB_PM_MSG: CTX_SAVE
[ 277.330229] sof-audio sof-audio: DSP core(s) enabled? 0 : core_mask 3
[ 277.330264] sof-audio sof-audio: Debug PCIR: 00000000 at 00000044