On Mon, 17 Dec 2007, Hans-Christian Egtvedt wrote: > Hi, > > I am solving a locking bug in the at73c213 SPI sound driver, and > wondered if the mixer API is protected against concurrent access in > ALSA? Or should I implement a mutex to protect my hardware against > concurrent access? Control r/w callbacks are protected with a semaphore - card->controls_rwsem . See sound/core/control.c for more details. Anyway, you need to protect your registers with spinlocks (if required of course). Jaroslav ----- Jaroslav Kysela <perex@xxxxxxxx> Linux Kernel Sound Maintainer ALSA Project _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
