Krzysztof Helt
8dce39b895
ALSA: opl3: circular locking in the snd_opl3_note_on() and snd_opl3_note_off()
...
Fix following circular locking in the opl3 driver.
=======================================================
[ INFO: possible circular locking dependency detected ]
2.6.32-rc3 #87
-------------------------------------------------------
swapper/0 is trying to acquire lock:
(&opl3->voice_lock){..-...}, at: [<cca748fe>] snd_opl3_note_off+0x1e/0xe0 [snd_opl3_synth]
but task is already holding lock:
(&opl3->sys_timer_lock){..-...}, at: [<cca75169>] snd_opl3_timer_func+0x19/0xc0 [snd_opl3_synth]
which lock already depends on the new lock.
the existing dependency chain (in reverse order) is:
-> #1 (&opl3->sys_timer_lock){..-...}:
[<c02461d5>] validate_chain+0xa25/0x1040
[<c0246aca>] __lock_acquire+0x2da/0xab0
[<c024731a>] lock_acquire+0x7a/0xa0
[<c044c300>] _spin_lock_irqsave+0x40/0x60
[<cca75046>] snd_opl3_note_on+0x686/0x790 [snd_opl3_synth]
[<cca68912>] snd_midi_process_event+0x322/0x590 [snd_seq_midi_emul]
[<cca74245>] snd_opl3_synth_event_input+0x15/0x20 [snd_opl3_synth]
[<cca4dcc0>] snd_seq_deliver_single_event+0x100/0x200 [snd_seq]
[<cca4de07>] snd_seq_deliver_event+0x47/0x1f0 [snd_seq]
[<cca4e50b>] snd_seq_dispatch_event+0x3b/0x140 [snd_seq]
[<cca5008c>] snd_seq_check_queue+0x10c/0x120 [snd_seq]
[<cca5037b>] snd_seq_enqueue_event+0x6b/0xe0 [snd_seq]
[<cca4e0fd>] snd_seq_client_enqueue_event+0xdd/0x100 [snd_seq]
[<cca4eb7a>] snd_seq_write+0xea/0x190 [snd_seq]
[<c02827b6>] vfs_write+0x96/0x160
[<c0282c9d>] sys_write+0x3d/0x70
[<c0202c45>] syscall_call+0x7/0xb
-> #0 (&opl3->voice_lock){..-...}:
[<c02467e6>] validate_chain+0x1036/0x1040
[<c0246aca>] __lock_acquire+0x2da/0xab0
[<c024731a>] lock_acquire+0x7a/0xa0
[<c044c300>] _spin_lock_irqsave+0x40/0x60
[<cca748fe>] snd_opl3_note_off+0x1e/0xe0 [snd_opl3_synth]
[<cca751f0>] snd_opl3_timer_func+0xa0/0xc0 [snd_opl3_synth]
[<c022ac46>] run_timer_softirq+0x166/0x1e0
[<c02269e8>] __do_softirq+0x78/0x110
[<c0226ac6>] do_softirq+0x46/0x50
[<c0226e26>] irq_exit+0x36/0x40
[<c0204bd2>] do_IRQ+0x42/0xb0
[<c020328e>] common_interrupt+0x2e/0x40
[<c021092f>] apm_cpu_idle+0x10f/0x290
[<c0201b11>] cpu_idle+0x21/0x40
[<c04443cd>] rest_init+0x4d/0x60
[<c055c835>] start_kernel+0x235/0x280
[<c055c066>] i386_start_kernel+0x66/0x70
other info that might help us debug this:
2 locks held by swapper/0:
#0 : (&opl3->tlist){+.-...}, at: [<c022abd0>] run_timer_softirq+0xf0/0x1e0
#1 : (&opl3->sys_timer_lock){..-...}, at: [<cca75169>] snd_opl3_timer_func+0x19/0xc0 [snd_opl3_synth]
stack backtrace:
Pid: 0, comm: swapper Not tainted 2.6.32-rc3 #87
Call Trace:
[<c0245188>] print_circular_bug+0xc8/0xd0
[<c02467e6>] validate_chain+0x1036/0x1040
[<c0247f14>] ? check_usage_forwards+0x54/0xd0
[<c0246aca>] __lock_acquire+0x2da/0xab0
[<c024731a>] lock_acquire+0x7a/0xa0
[<cca748fe>] ? snd_opl3_note_off+0x1e/0xe0 [snd_opl3_synth]
[<c044c300>] _spin_lock_irqsave+0x40/0x60
[<cca748fe>] ? snd_opl3_note_off+0x1e/0xe0 [snd_opl3_synth]
[<cca748fe>] snd_opl3_note_off+0x1e/0xe0 [snd_opl3_synth]
[<c044c307>] ? _spin_lock_irqsave+0x47/0x60
[<cca751f0>] snd_opl3_timer_func+0xa0/0xc0 [snd_opl3_synth]
[<c022ac46>] run_timer_softirq+0x166/0x1e0
[<c022abd0>] ? run_timer_softirq+0xf0/0x1e0
[<cca75150>] ? snd_opl3_timer_func+0x0/0xc0 [snd_opl3_synth]
[<c02269e8>] __do_softirq+0x78/0x110
[<c044c0fd>] ? _spin_unlock+0x1d/0x20
[<c025915f>] ? handle_level_irq+0xaf/0xe0
[<c0226ac6>] do_softirq+0x46/0x50
[<c0226e26>] irq_exit+0x36/0x40
[<c0204bd2>] do_IRQ+0x42/0xb0
[<c024463c>] ? trace_hardirqs_on_caller+0x12c/0x180
[<c020328e>] common_interrupt+0x2e/0x40
[<c0208d88>] ? default_idle+0x38/0x50
[<c021092f>] apm_cpu_idle+0x10f/0x290
[<c0201b11>] cpu_idle+0x21/0x40
[<c04443cd>] rest_init+0x4d/0x60
[<c055c835>] start_kernel+0x235/0x280
[<c055c210>] ? unknown_bootoption+0x0/0x210
[<c055c066>] i386_start_kernel+0x66/0x70
Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2009-10-08 11:48:10 +02:00
Takashi Iwai
45203832df
ALSA: Add missing KERN_* prefix to printk in sound/drivers
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Signed-off-by: Takashi Iwai <tiwai@suse.de>
2009-02-05 16:00:56 +01:00
Takashi Iwai
5e246b850d
ALSA: Kill snd_assert() in other places
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Kill snd_assert() in other places, either removed or replaced with
if () with snd_BUG_ON().
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
2008-08-13 11:46:40 +02:00
Takashi Iwai
224a033252
[ALSA] opl3 - Use hwdep for patch loading
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Use the hwdep device for loading OPL2/3 patch data instead of the
messy sequencer instrument layer.
Due to this change, the sbiload program should be updated, too.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
2008-01-31 17:29:13 +01:00
Robert P. J. Day
3a4fa0a25d
Fix misspellings of "system", "controller", "interrupt" and "necessary".
...
Fix the various misspellings of "system", controller", "interrupt" and
"[un]necessary".
Signed-off-by: Robert P. J. Day <rpjday@mindspring.com>
Signed-off-by: Adrian Bunk <bunk@kernel.org>
2007-10-19 23:10:43 +02:00
Takashi Iwai
b32425ac93
[ALSA] Fix possible races in timer callbacks
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Fix possible races in timer callbacks.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2006-01-03 12:29:08 +01:00
Takashi Iwai
5b1646a8ec
[ALSA] Remove xxx_t typedefs: OPL3
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Modules: OPL3,Raw OPL FM
Remove xxx_t typedefs from the OPL3 driver
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2006-01-03 12:18:04 +01:00
Linus Torvalds
1da177e4c3
Linux-2.6.12-rc2
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Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
2005-04-16 15:20:36 -07:00
