13 Jul
2004
13 Jul
'04
7:55 a.m.
Takashi Iwai <tiwai(a)suse.de> wrote:
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.
You can do unlock_kernel()/lock_kernel() in
soundcore_open().
I remember ioctl() is also in lock_kernel()?