Hi, This is a backport of [1] series for 6.6.x stable kernel. It is fixing a user reported [2] NULL dereference kernel panic after updating the SOF firmware and topology files. While Meteor Lake is not supported by 6.6 kernel, users might need to be able to use it as a jumping point to update the kernel to a version which is supporting Meteor Lake (6.7+), a kernel panic should be avoided to not block the transition. [1] https://lore.kernel.org/alsa-devel/20230919103115.30783-1-peter.ujfalusi@xxxxxxxxxxxxxxx/ [2] https://github.com/thesofproject/sof/issues/9600 Regards, Peter --- Peter Ujfalusi (3): ASoC: SOF: ipc4-topology: Add definition for generic switch/enum control ASoC: SOF: ipc4-control: Add support for ALSA switch control ASoC: SOF: ipc4-control: Add support for ALSA enum control sound/soc/sof/ipc4-control.c | 175 +++++++++++++++++++++++++++++++++- sound/soc/sof/ipc4-topology.c | 49 +++++++++- sound/soc/sof/ipc4-topology.h | 19 +++- 3 files changed, 237 insertions(+), 6 deletions(-) -- 2.47.0
