On Tue, Jan 16, 2024 at 11:40:39PM +0100, Christian A. Ehrhardt wrote: > Calling ->sync_write must be done while holding the PPM lock as the > mailbox logic does not support concurrent commands. > > Thus protect the only call to ucsi_acknowledge_connector_change > with the PPM lock as it calls ->sync_write. All other calls to > ->sync_write already happen under the PPM lock. > > Signed-off-by: Christian A. Ehrhardt <lk@xxxxxxx> > --- > NOTE: This is not a theoretical issue. I've seen problems resulting > from the missing lock on real hardware. What commit id does this fix? Should it be cc: stable? thanks, greg k-h
