Yiliang Bao wrote: > I looked at some PCI audio capture driver like BT878 (sound/pci/bt87x.c) or > SAA7134 (drivers/media/video/saa7134-alsa.c), I found that spin_lock instead > of spin_lock_irq (or spin_lock_irqsave) is used in trigger function. Is > there any reason for that? Yes, the trigger callback is called with interrupts already disabled. http://www.alsa-project.org/~tiwai/writing-an-alsa-driver/ch05s08.html Regards, Clemens _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
