From 50b55fd463ce565b768d8bc214dd0280bee8b10d Mon Sep 17 00:00:00 2001 From: Keyon Jie Date: Fri, 4 Sep 2020 16:27:33 +0300 Subject: [PATCH] ASoC: SOF: use the sof_ipc_comp reserved bytes for extended data Use the 32bit reserved member of the struct sof_ipc_comp as the extended data length, this will help to minimize the ABI change for adding new extended data to the struct sof_ipc_comp, usually only minor ABI version bump needed for every update with this new solution. Signed-off-by: Keyon Jie Reviewed-by: Ranjani Sridharan Signed-off-by: Kai Vehmanen Link: https://lore.kernel.org/r/20200904132744.1699575-6-kai.vehmanen@linux.intel.com Signed-off-by: Mark Brown --- include/sound/sof/topology.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/include/sound/sof/topology.h b/include/sound/sof/topology.h index 796b6c8..d12736e 100644 --- a/include/sound/sof/topology.h +++ b/include/sound/sof/topology.h @@ -57,8 +57,8 @@ struct sof_ipc_comp { uint32_t pipeline_id; uint32_t core; - /* reserved for future use */ - uint32_t reserved[1]; + /* extended data length, 0 if no extended data */ + uint32_t ext_data_length; } __packed; /* -- 2.7.4