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(parent: 888ea7d) | patch
ALSA: Add a reference counter to card instance
authorTakashi Iwai <tiwai@suse.de>
Tue, 16 Oct 2012 11:05:59 +0000 (13:05 +0200)
committerTakashi Iwai <tiwai@suse.de>
Tue, 30 Oct 2012 10:07:10 +0000 (11:07 +0100)
commita0830dbd4e42b38aefdf3fb61ba5019a1a99ea85
tree4dc74b708a07b56d12ed72a34d0a2e0cb8c8b9d4tree | snapshot (tar.gz zip)
parent888ea7d5ac6815ba16b3b3a20f665a92c7af6724commit | diff
ALSA: Add a reference counter to card instance

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>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
include/sound/core.h diff | blob | blame | history
sound/core/compress_offload.c diff | blob | blame | history
sound/core/control.c diff | blob | blame | history
sound/core/hwdep.c diff | blob | blame | history
sound/core/init.c diff | blob | blame | history
sound/core/oss/mixer_oss.c diff | blob | blame | history
sound/core/oss/pcm_oss.c diff | blob | blame | history
sound/core/pcm_native.c diff | blob | blame | history
sound/core/rawmidi.c diff | blob | blame | history
sound/core/sound.c diff | blob | blame | history
sound/core/sound_oss.c diff | blob | blame | history