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There will be a period of time until the detach is recognised by the core, if the driver immediately calls sdw_slave_wait_for_init() it is possible for that to complete before the detach has been recognised. Leaving the driver with a device that is potentially not ready for what follows. To avoid this race add a new helper that drivers can use to inform the core the device will detach. This clears the enumeration completions ensuring that sdw_slave_wait_for_init() can't complete until the device re-attaches. This is the third part of a longer series of moving these slave attach/deatach operations into the core: https://lore.kernel.org/linux-sound/20260512103022.1154645-1-ckeepax@opensource.cirrus.com/ https://lore.kernel.org/linux-sound/20260608102714.2503120-1-ckeepax@opensource.cirrus.com/ Changes since v1: - Correct kerneldoc Charles Keepax (2): soundwire: Add a helper function to indicate a device will detach mfd: cs42l43: Move to core detach helper drivers/mfd/cs42l43-sdw.c | 2 -- drivers/mfd/cs42l43.c | 15 +-------------- drivers/soundwire/bus.h | 6 ------ include/linux/mfd/cs42l43.h | 1 - include/linux/soundwire/sdw.h | 26 ++++++++++++++++++++++++++ 5 files changed, 27 insertions(+), 23 deletions(-) -- 2.47.3