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0767e95bb9
linux/sound/core/seq
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Clemens Ladisch 0767e95bb9 ALSA: seq-dummy: remove deadlock-causing events on close 
When the last subscriber to a "Through" port has been removed, the
subscribed destination ports might still be active, so it would be
wrong to send "all sounds off" and "reset controller" events to them.
The proper place for such a shutdown would be the closing of the actual
MIDI port (and close_substream() in rawmidi.c already can do this).

This also fixes a deadlock when dummy_unuse() tries to send events to
its own port that is already locked because it is being freed.

Reported-by: Peter Billam <peter@www.pjb.com.au>
Cc: <stable@vger.kernel.org>
Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-01-26 13:53:13 +01:00
..
oss ALSA: core: Deletion of unnecessary checks before two function calls 2014-11-21 20:06:57 +01:00
Kconfig ALSA: clean up the logic for building sequencer modules 2009-05-29 11:49:42 +02:00
Makefile ALSA: OSS sequencer should be initialized after snd_seq_system_client_init 2009-07-19 19:10:01 +02:00
seq_clientmgr.c ALSA: seq: Continue broadcasting events to ports if one of them fails 2014-06-04 17:30:58 +02:00
seq_clientmgr.h [ALSA] sound/core/seq: move declarations of globally visible variables to proper headers 2008-01-31 17:29:35 +01:00
seq_compat.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
seq_device.c Subject: ALSA: seq: Remove autoload locks in driver registration 2014-10-18 20:25:19 +02:00
seq_dummy.c ALSA: seq-dummy: remove deadlock-causing events on close 2015-01-26 13:53:13 +01:00
seq_fifo.c ALSA: seq: correctly detect input buffer overflow 2014-06-04 07:12:12 +02:00
seq_fifo.h
seq_info.c sound: Add export.h for THIS_MODULE/EXPORT_SYMBOL where needed 2011-10-31 19:31:22 -04:00
seq_info.h
seq_lock.c ALSA: seq: Use standard printk helpers 2014-02-14 08:14:18 +01:00
seq_lock.h
seq_memory.c ALSA: seq: seq_memory.c: Fix closing brace followed by if 2014-06-23 17:58:33 +02:00
seq_memory.h ALSA: core: sparse cleanups 2011-02-14 17:10:11 +01:00
seq_midi_emul.c ALSA: seq: Use standard printk helpers 2014-02-14 08:14:18 +01:00
seq_midi_event.c sound: Add module.h to the previously silent sound users 2011-10-31 19:31:21 -04:00
seq_midi.c ALSA: core: Fix format string mismatch in seq_midi.c 2014-04-28 12:18:47 +02:00
seq_ports.c ALSA: seq: Use standard printk helpers 2014-02-14 08:14:18 +01:00
seq_ports.h
seq_prioq.c ALSA: seq: Use standard printk helpers 2014-02-14 08:14:18 +01:00
seq_prioq.h
seq_queue.c ALSA: seq: Use standard printk helpers 2014-02-14 08:14:18 +01:00
seq_queue.h
seq_system.c sound: Add export.h for THIS_MODULE/EXPORT_SYMBOL where needed 2011-10-31 19:31:22 -04:00
seq_system.h
seq_timer.c ALSA: seq: Use standard printk helpers 2014-02-14 08:14:18 +01:00
seq_timer.h [ALSA] sound/core/seq: move declarations of globally visible variables to proper headers 2008-01-31 17:29:35 +01:00
seq_virmidi.c ALSA: seq: Use standard printk helpers 2014-02-14 08:14:18 +01:00
seq.c Subject: ALSA: seq: Remove autoload locks in driver registration 2014-10-18 20:25:19 +02:00