git.hungrycats.org Git - linux/commit

author	Takashi Iwai <tiwai@suse.de>
	Wed, 7 Nov 2012 11:44:12 +0000 (12:44 +0100)
committer	Greg Kroah-Hartman <gregkh@linuxfoundation.org>
	Sat, 17 Nov 2012 21:14:22 +0000 (13:14 -0800)
commit	40edba667959559aa4385a5ec047420fcfeb5f03
tree	6df9fc6d71f5d7608a95ca7d437fca00b83afb1f	tree \| snapshot
parent	fb434cc26173c2285d48d640c639493bc6a6c5f5	commit \| diff

ALSA: Add a reference counter to card instance

commit a0830dbd4e42b38aefdf3fb61ba5019a1a99ea85 upstream.

For more strict protection for wild disconnections, a refcount is
introduced to the card instance, and let it up/down when an object is
referred via snd_lookup_*() in the open ops.

The free-after-last-close check is also changed to check this refcount
instead of the empty list, too.

Reported-by: Matthieu CASTET <matthieu.castet@parrot.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

include/sound/core.h		diff \| blob \| history
sound/core/control.c		diff \| blob \| history
sound/core/hwdep.c		diff \| blob \| history
sound/core/init.c		diff \| blob \| history
sound/core/oss/mixer_oss.c		diff \| blob \| history
sound/core/oss/pcm_oss.c		diff \| blob \| history
sound/core/pcm_native.c		diff \| blob \| history
sound/core/rawmidi.c		diff \| blob \| history
sound/core/sound.c		diff \| blob \| history
sound/core/sound_oss.c		diff \| blob \| history