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authorKeyon Jie <yang.jie@linux.intel.com>2020-09-04 16:27:33 +0300
committerMark Brown <broonie@kernel.org>2020-09-07 17:16:37 +0300
commit50b55fd463ce565b768d8bc214dd0280bee8b10d (patch)
treef0ff3856f83c8787796d0e72648d8058b676a89a /include/sound
parent929e427a9c4e59d744fb5d3771b87a741ea3078a (diff)
downloadlinux-50b55fd463ce565b768d8bc214dd0280bee8b10d.tar.xz
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 <yang.jie@linux.intel.com> Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com> Signed-off-by: Kai Vehmanen <kai.vehmanen@linux.intel.com> Link: https://lore.kernel.org/r/20200904132744.1699575-6-kai.vehmanen@linux.intel.com Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'include/sound')
-rw-r--r--include/sound/sof/topology.h4
1 files changed, 2 insertions, 2 deletions
diff --git a/include/sound/sof/topology.h b/include/sound/sof/topology.h
index 796b6c8e851d..d12736e14b69 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;
/*