Takashi Iwai <[EMAIL PROTECTED]> wrote: > > > You can do unlock_kernel()/lock_kernel() in soundcore_open(). > > I remember ioctl() is also in lock_kernel()?
yes, you'll need to do unlock_kernel/lock_kernel there too. If someone changes the rules, or otherwise calls your ioctl withoht lock_kernel() held it will reliably go BUG with spinlock debugging enabled, so make sure you test with CONFIG_DEBUG_SPINLOCK=y.
