On a S905W-based system I get the following error: debugfs: Directory 'c1105400.audio-controller' with parent 'P230-Q200' already present!
Turned out that multiple components having the same name triggers this error in soc_init_component_debugfs(). The proposed solution allows other drivers to adopt the same approach with minimal effort. With the patch the error is gone and that's the debugfs entries.
/sys/kernel/debug/asoc/P230-Q200/acodec:c1105400.audio-controller /sys/kernel/debug/asoc/P230-Q200/hdmi:c1105400.audio-controller /sys/kernel/debug/asoc/P230-Q200/cpu:c1105400.audio-controller
v2: - Reworked approach based on [0]
[0] https://www.spinics.net/lists/arm-kernel/msg960881.html
Heiner Kallweit (2): ASoC: soc-core: add debugfs_prefix member to snd_soc_component_driver ASoC: meson: aiu: fix duplicate debugfs directory error
include/sound/soc-component.h | 4 ++++ sound/soc/meson/aiu-acodec-ctrl.c | 3 +++ sound/soc/meson/aiu-codec-ctrl.c | 3 +++ sound/soc/meson/aiu.c | 3 +++ sound/soc/soc-core.c | 5 +++++ 5 files changed, 18 insertions(+)