Hi, The series will drop the internal use of 'header' parameter which is always set to hdr->cmd. The other simplification is to use the provided message directly as it is guarantied to be valid throughout the message sending and we can save memory by not allocating a temporary buffer, also saving on needles memcpy() operations. Regards, Peter --- Peter Ujfalusi (3): ASoC: SOF: Intel: cnl: Use pm_gate->hdr.cmd in cnl_compact_ipc_compress() ASoC: SOF: ipc: Drop header parameter from sof_ipc_tx_message_unlocked() ASoC: SOF: ipc: Do not allocate buffer for msg_data sound/soc/sof/intel/cnl.c | 6 ++---- sound/soc/sof/ipc.c | 24 ++++++++++++------------ 2 files changed, 14 insertions(+), 16 deletions(-) -- 2.35.0