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* ALSA: aloop - add locking to timer accessOmair Mohammed Abdullah2012-10-131-0/+6
| | | | | | | | | | | | | | | | | | | commit d4f1e48bd11e3df6a26811f7a1f06c4225d92f7d upstream. When the loopback timer handler is running, calling del_timer() (for STOP trigger) will not wait for the handler to complete before deactivating the timer. The timer gets rescheduled in the handler as usual. Then a subsequent START trigger will try to start the timer using add_timer() with a timer pending leading to a kernel panic. Serialize the calls to add_timer() and del_timer() using a spin lock to avoid this. Signed-off-by: Omair Mohammed Abdullah <omair.m.abdullah@linux.intel.com> Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* ALSA: mpu401: Fix missing initialization of irq fieldTakashi Iwai2012-08-091-0/+1
| | | | | | | | | | | | | | commit bc733d495267a23ef8660220d696c6e549ce30b3 upstream. The irq field of struct snd_mpu401 is supposed to be initialized to -1. Since it's set to zero as of now, a probing error before the irq installation results in a kernel warning "Trying to free already-free IRQ 0". Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=44821 Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* Fix common misspellingsLucas De Marchi2011-03-312-3/+3
| | | | | | Fixes generated by 'codespell' and manually reviewed. Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>
* ALSA: aloop - Fix possible IRQ lock inversionTakashi Iwai2011-03-181-10/+9
| | | | | | | | | | loopback_pos_update() can be called in the timer callback, thus the lock held should be irq-safe. Otherwise you'll get AB/BA deadlock together with substream->self_group.lock. Reported-and-tested-by: Knut Petersen <Knut_Petersen@t-online.de> Cc: <stable@kernel.org> Signed-off-by: Takashi Iwai <tiwai@suse.de>
* ALSA: use linux/io.h to fix compile warningsTakashi Iwai2011-02-021-2/+1
| | | | | | | | | For helping to reduce Greert's regression list... src/sound/drivers/mtpav.c: error: implicit declaration of function 'inb' src/sound/drivers/mtpav.c: error: implicit declaration of function 'outb' ... Signed-off-by: Takashi Iwai <tiwai@suse.de>
* ALSA: ml403-ac97cr: Use vsprintf extension %pR for struct resourceJoe Perches2010-12-141-2/+2
| | | | | Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
* Merge remote branch 'alsa/devel' into topic/miscTakashi Iwai2010-10-201-16/+123
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| * ALSA: snd-aloop - add pause supportJaroslav Kysela2010-10-201-5/+22
| | | | | | | | Signed-off-by: Jaroslav Kysela <perex@perex.cz>
| * ALSA: snd-aloop - fix locking issues (running flag updates)Jaroslav Kysela2010-10-201-13/+19
| | | | | | | | | | | | | | On SMP machines, the cable->running update must be atomic, otherwise stream is not started correctly sometimes. Signed-off-by: Jaroslav Kysela <perex@perex.cz>
| * ALSA: snd-aloop: add cable#0 and cable#1 files to proc card treeJaroslav Kysela2010-10-181-0/+84
| | | | | | | | | | | | Show some useful runtime information using procfs. Signed-off-by: Jaroslav Kysela <perex@perex.cz>
* | Merge remote branch 'alsa/devel' into topic/miscTakashi Iwai2010-10-171-1/+7
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| * ALSA: snd-aloop - fix issue in the timer start functionJaroslav Kysela2010-10-141-1/+7
| | | | | | | | | | | | | | | | | | | | In some circumstances (the rate shift value was changed), the irq_pos value may be higher than the fraction value in the timer start function. Check for it. Also, to avoid value overflow, decrease maximum period size. Signed-off-by: Jaroslav Kysela <perex@perex.cz>
* | Merge remote branch 'alsa/devel' into topic/miscTakashi Iwai2010-10-111-18/+106
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| * ALSA: snd-aloop: Fix hw_params restrictions and checkingJaroslav Kysela2010-10-111-18/+106
| | | | | | | | | | | | | | | | This patch fixes the hw_params restrictions when first (or playback) stream sets the final hardware parameters. Also, fix the hw_params checking in the trigger callback. Signed-off-by: Jaroslav Kysela <perex@perex.cz>
* | Merge remote branch 'alsa/devel' into topic/miscTakashi Iwai2010-10-041-1/+1
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| * ALSA: snd-aloop - fix "PCM Slave Active" element read valueJaroslav Kysela2010-10-021-1/+1
| | | | | | | | | | | | Simple coding fix. Signed-off-by: Jaroslav Kysela <perex@perex.cz>
* | Merge remote branch 'alsa/devel' into topic/miscTakashi Iwai2010-09-301-2/+4
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| * ALSA: snd-aloop - fix capture buffer silenceJaroslav Kysela2010-09-301-2/+4
| | | | | | | | | | | | | | In a special case, some old samples are left in the capture ring buffer. Fix it. Signed-off-by: Jaroslav Kysela <perex@perex.cz>
* | Merge remote branch 'alsa/devel' into topic/miscTakashi Iwai2010-09-221-1/+1
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| * ALSA: snd-aloop - fix the "PCM Playback Channels" kcontrolJaroslav Kysela2010-09-151-1/+1
| | | | | | | | | | | | Obvious copy-and-paste error. Signed-off-by: Jaroslav Kysela <perex@perex.cz>
* | sound: Remove unnecessary casts of private_dataJoe Perches2010-09-071-1/+1
| | | | | | | | | | Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
* | Merge branch 'topic/aloop' into topic/miscTakashi Iwai2010-08-183-0/+1076
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| * ALSA: introduce the snd-aloop module for the PCM loopbackJaroslav Kysela2010-08-093-0/+1076
| | | | | | | | | | | | | | | | | | | | The snd-aloop module allows redirecting of the PCM playback in the kernel back to the user space using the standard ALSA PCM capture API. The module also allows time synchronization with another timing source and notifications of playback stream parameter changes. Signed-off-by: Jaroslav Kysela <perex@perex.cz>
* | Merge branch 'for-linus' of ↵Linus Torvalds2010-08-071-3/+21
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6: (214 commits) ALSA: hda - Add pin-fix for HP dc5750 ALSA: als4000: Fix potentially invalid DMA mode setup ALSA: als4000: enable burst mode ALSA: hda - Fix initial capsrc selection in patch_alc269() ASoC: TWL4030: Capture route runtime DAPM ordering fix ALSA: hda - Add PC-beep whitelist for an Intel board ALSA: hda - More relax for pending period handling ALSA: hda - Define AC_FMT_* constants ALSA: hda - Fix beep frequency on IDT 92HD73xx and 92HD71Bxx codecs ALSA: hda - Add support for HDMI HBR passthrough ALSA: hda - Set Stream Type in Stream Format according to AES0 ALSA: hda - Fix Thinkpad X300 so SPDIF is not exposed ALSA: hda - FIX to not expose SPDIF on Thinkpad X301, since it does not have the ability to use SPDIF ASoC: wm9081: fix resource reclaim in wm9081_register error path ASoC: wm8978: fix a memory leak if a wm8978_register fail ASoC: wm8974: fix a memory leak if another WM8974 is registered ASoC: wm8961: fix resource reclaim in wm8961_register error path ASoC: wm8955: fix resource reclaim in wm8955_register error path ASoC: wm8940: fix a memory leak if wm8940_register return error ASoC: wm8904: fix resource reclaim in wm8904_register error path ...
| * | ALSA: Kconfig: SND_AC97_POWER_SAVE description improvementMichael Witten2010-07-151-3/+21
| |/ | | | | | | | | | | | | | | The description has been expanded to explain the time-out value provided by the power_save module parameter. Signed-off-by: Michael Witten <mfwitten@gmail.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
* | Kconfig: fixo typo in "Xilinx'"Michael Witten2010-07-151-1/+1
|/ | | | | Signed-off-by: Michael Witten <mfwitten@gmail.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
* Merge branch 'for-linus' of ↵Linus Torvalds2010-05-201-58/+25
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6: (250 commits) ALSA: hda: Storage class should be before const qualifier ASoC: tpa6130a2: Remove CPVSS and HPVdd supplies ASoC: tpa6130a2: Define output pins with SND_SOC_DAPM_OUTPUT ASoC: sdp4430 - add sdp4430 pcm ops to DAI. ASoC: TWL6040: Enable earphone path in codec ASoC: SDP4430: Add support for Earphone speaker ASoC: SDP4430: Add sdp4430 machine driver ASoC: tlv320dac33: Avoid powering off while in BIAS_OFF ASoC: tlv320dac33: Use dev_dbg in dac33_hard_power function ALSA: sound/pci/asihpi: Use kzalloc ALSA: hdmi - dont fail on extra nodes ALSA: intelhdmi - add id for the CougarPoint chipset ALSA: intelhdmi - user friendly codec name ALSA: intelhdmi - add dependency on SND_DYNAMIC_MINORS ALSA: asihpi: incorrect range check ALSA: asihpi: testing the wrong variable ALSA: es1688: add pedantic range checks ARM: McBSP: Add support for omap4 in McBSP driver ARM: McBSP: Fix request for irq in OMAP4 OMAP: McBSP: Add 32-bit mode support ...
| * ALSA: opl4 - Fix a wrong argument in proc write callbackTakashi Iwai2010-05-101-1/+1
| | | | | | | | | | | | | | | | | | The commit 24e4a1211f691fc671de44685430dbad757d8487 ALSA: info - Use standard types for info callbacks introduced a wrong type to snd_opl4_mem_proc_write() for pos argument. Fixed now. Signed-off-by: Takashi Iwai <tiwai@suse.de>
| * ALSA: info - Implement common llseek for binary modeTakashi Iwai2010-04-131-24/+0
| | | | | | | | | | | | | | | | | | | | | | The llseek implementation is identical for existing driver implementations, so let's merge to the common layer. The same code for the text proc file can be used even for the binary proc file. The driver can provide its own llseek method if needed. Then the common code will be skipped. Signed-off-by: Takashi Iwai <tiwai@suse.de>
| * ALSA: info - Check file position validity in common layerTakashi Iwai2010-04-131-30/+16
| | | | | | | | | | | | | | | | | | | | Check the validity of the file position in the common info layer before calling read or write callbacks in assumption that entry->size is set up properly to indicate the max file size. Removed the redundant checks from the callbacks as well. Signed-off-by: Takashi Iwai <tiwai@suse.de>
| * ALSA: info - Use standard types for info callbacksTakashi Iwai2010-04-131-8/+13
| | | | | | | | | | | | | | Use loff_t, size_t and ssize_t for arguments of info callbacks to follow the standard procfs. Signed-off-by: Takashi Iwai <tiwai@suse.de>
* | Merge commit 'v2.6.34-rc6' into core/lockingIngo Molnar2010-05-039-2/+7
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| * include cleanup: Update gfp.h and slab.h includes to prepare for breaking ↵Tejun Heo2010-03-309-2/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | implicit slab.h inclusion from percpu.h percpu.h is included by sched.h and module.h and thus ends up being included when building most .c files. percpu.h includes slab.h which in turn includes gfp.h making everything defined by the two files universally available and complicating inclusion dependencies. percpu.h -> slab.h dependency is about to be removed. Prepare for this change by updating users of gfp and slab facilities include those headers directly instead of assuming availability. As this conversion needs to touch large number of source files, the following script is used as the basis of conversion. http://userweb.kernel.org/~tj/misc/slabh-sweep.py The script does the followings. * Scan files for gfp and slab usages and update includes such that only the necessary includes are there. ie. if only gfp is used, gfp.h, if slab is used, slab.h. * When the script inserts a new include, it looks at the include blocks and try to put the new include such that its order conforms to its surrounding. It's put in the include block which contains core kernel includes, in the same order that the rest are ordered - alphabetical, Christmas tree, rev-Xmas-tree or at the end if there doesn't seem to be any matching order. * If the script can't find a place to put a new include (mostly because the file doesn't have fitting include block), it prints out an error message indicating which .h file needs to be added to the file. The conversion was done in the following steps. 1. The initial automatic conversion of all .c files updated slightly over 4000 files, deleting around 700 includes and adding ~480 gfp.h and ~3000 slab.h inclusions. The script emitted errors for ~400 files. 2. Each error was manually checked. Some didn't need the inclusion, some needed manual addition while adding it to implementation .h or embedding .c file was more appropriate for others. This step added inclusions to around 150 files. 3. The script was run again and the output was compared to the edits from #2 to make sure no file was left behind. 4. Several build tests were done and a couple of problems were fixed. e.g. lib/decompress_*.c used malloc/free() wrappers around slab APIs requiring slab.h to be added manually. 5. The script was run on all .h files but without automatically editing them as sprinkling gfp.h and slab.h inclusions around .h files could easily lead to inclusion dependency hell. Most gfp.h inclusion directives were ignored as stuff from gfp.h was usually wildly available and often used in preprocessor macros. Each slab.h inclusion directive was examined and added manually as necessary. 6. percpu.h was updated not to include slab.h. 7. Build test were done on the following configurations and failures were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my distributed build env didn't work with gcov compiles) and a few more options had to be turned off depending on archs to make things build (like ipr on powerpc/64 which failed due to missing writeq). * x86 and x86_64 UP and SMP allmodconfig and a custom test config. * powerpc and powerpc64 SMP allmodconfig * sparc and sparc64 SMP allmodconfig * ia64 SMP allmodconfig * s390 SMP allmodconfig * alpha SMP allmodconfig * um on x86_64 SMP allmodconfig 8. percpu.h modifications were reverted so that it could be applied as a separate patch and serve as bisection point. Given the fact that I had only a couple of failures from tests on step 6, I'm fairly confident about the coverage of this conversion patch. If there is a breakage, it's likely to be something in one of the arch headers which should be easily discoverable easily on most builds of the specific arch. Signed-off-by: Tejun Heo <tj@kernel.org> Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
* | i8253: Convert i8253_lock to raw_spinlockThomas Gleixner2010-03-023-9/+9
|/ | | | | | | | | | | | | | | i8253_lock needs to be a real spinlock in preempt-rt, i.e. it can not be converted to a sleeping lock. Convert it to raw_spinlock and fix up all users. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Ralf Baechle <ralf@linux-mips.org> Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Acked-by: Takashi Iwai <tiwai@suse.de> Cc: Jens Axboe <jens.axboe@oracle.com> LKML-Reference: <20100217163751.030764372@linutronix.de>
* Merge remote branch 'alsa/devel' into topic/miscTakashi Iwai2010-02-121-110/+180
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| * ALSA: dummy driver - add model parameterJaroslav Kysela2010-02-021-110/+180
| | | | | | | | | | | | | | This is a cleanup for the dummy driver. The model kernel module parameter is introduced to select the soundcard emulation. Signed-off-by: Jaroslav Kysela <perex@perex.cz>
* | ALSA: pcm - Call pgprot_noncached() for vmalloc'ed buffersTakashi Iwai2010-01-181-0/+2
| | | | | | | | | | | | | | | | | | | | | | pgprot_noncached() can be set for vmalloc'ed buffers safely, and we'd need non-cached behavior more or less, even for the intermediate ring- buffers. Now snd_pcm_lib_mmap_vmalloc() is added as the common PCM mmap callback that is coupled with snd_pcm_lib_alloc_vmalloc_buffer() & co. Signed-off-by: Takashi Iwai <tiwai@suse.de>
* | sound: vx: use vmalloc buffer helper functionsClemens Ladisch2009-12-181-54/+5
|/ | | | | | | | Remove this duplicate of snd_pcm_alloc_vmalloc_buffer and use the equivalent core functions instead. Signed-off-by: Clemens Ladisch <clemens@ladisch.de> Signed-off-by: Takashi Iwai <tiwai@suse.de>
* Merge branch 'topic/beep-rename' into topic/core-changeTakashi Iwai2009-12-013-21/+48
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| * ALSA: rename "PC Speaker" and "PC Beep" controls to "Beep"Jaroslav Kysela2009-11-051-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | To avoid confusion in control names for the standard analog PC Beep generator using a small Internal PC Speaker, rename all related "PC Speaker" and "PC Beep" controls to "Beep" only. This name is more universal and can be also used on more platforms without confusion. Introduce also "Internal Speaker" in ControlNames.txt for systems with full-featured build-in internal speaker. Signed-off-by: Jaroslav Kysela <perex@perex.cz> Signed-off-by: Takashi Iwai <tiwai@suse.de>
| * ALSA: snd-pcsp: add nopcm modeStas Sergeev2009-11-013-20/+47
| | | | | | | | | | | | | | | | | | | | | | | | Currently, if the high-res timers are unavailable, snd-pcsp does not initialize. People who choose it over pcspkr, loose their console beeps in that case and get annoyed. With this patch, the console beeps remain regardless of the high-res timers. Additionally, the "nopcm" modparam is added to forcibly disable the PCM capabilities of the driver. Signed-off-by: Stas Sergeev <stsp@aknet.ru> Signed-off-by: Takashi Iwai <tiwai@suse.de>
* | ALSA: dummy - Fix descriptions of pcm_substreams parameterTakashi Iwai2009-11-021-1/+1
|/ | | | | | | Now up to 128 substreams are supported. Reported-by: Adrian Bridgett <adrian@smop.co.uk> Signed-off-by: Takashi Iwai <tiwai@suse.de>
* ALSA: sound: Move dereference after NULL test and drop unnecessary NULL testsJulia Lawall2009-10-301-2/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | In pcm.c, if the NULL test on pcm is needed, then the dereference should be after the NULL test. In dummy.c and ali5451.c, the context of the calls to snd_card_dummy_new_mixer and snd_ali_free_voice show that dummy and pvoice, respectively cannot be NULL. A simplified version of the semantic match that detects this problem is as follows (http://coccinelle.lip6.fr/): // <smpl> @match exists@ expression x, E; identifier fld; @@ * x->fld ... when != \(x = E\|&x\) * x == NULL // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: Takashi Iwai <tiwai@suse.de>
* ALSA: pcsp - Fix nforce workaroundStas Sergeev2009-10-302-32/+35
| | | | | | | | | | | | | The attached patch fixes the problems introduced in this commit: http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=eea0579fc85e64e9f05361d5aacf496fe7a151aa - Fix nForce workaround by honouring the pointer_update var - Revert "ns" to u64, as per the hrtimer API - Revert to the zero-delay timer startup, since I can't reproduce any problem with it (please, give me the hint!) Signed-off-by: Stas Sergeev <stsp@aknet.ru> Signed-off-by: Takashi Iwai <tiwai@suse.de>
* ALSA: opl3: circular locking in the snd_opl3_note_on() and snd_opl3_note_off()Krzysztof Helt2009-10-081-8/+20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* ALSA: dummy - Increase MAX_PCM_SUBSTREAMS to 128Takashi Iwai2009-09-081-1/+1
| | | | | | | Increase the limit of PCM substreams to 128. The default value is unchanged; only the max accept value is increased. Signed-off-by: Takashi Iwai <tiwai@suse.de>
* ALSA: dummy - Add debug proc fileTakashi Iwai2009-09-081-0/+132
| | | | | | | | | Added the debug proc file to see or change the snd_pcm_hardware fields to emulate. The parameters can be changed by writing to a proc file like: # echo periods_min 4 > /proc/asound/card1/dummy_pcm Signed-off-by: Takashi Iwai <tiwai@suse.de>
* ALSA: dummy - Fake buffer allocationsTakashi Iwai2009-09-071-8/+98
| | | | | | | | | | | | Instead of allocating the real buffers, use a fake buffer and ignore read/write in the dummy driver so that we can save the resources. For mmap, a single page (unique to the direction, though) is reused to all buffers. When the app requires to read/write the real buffers, pass fake_buffer=0 module option at loading time. This will get back to the old behavior. Signed-off-by: Takashi Iwai <tiwai@suse.de>
* ALSA: dummy - Fix the timer calculation in systimer modeTakashi Iwai2009-09-041-8/+21
| | | | | | | Fix the expire-time calculation in the systimer mode when the buffer size isn't aligned to the period size. Signed-off-by: Takashi Iwai <tiwai@suse.de>
* ALSA: dummy - Better jiffies handlingTakashi Iwai2009-09-031-35/+43
| | | | | | | | | | | In the system-timer mode, snd-dummy driver issues each tick to update the position. This is highly inefficient and even inaccurate if the timer can't be triggered at each tick. Now rewritten to wake up only at the period boundary. The position is calculated from the current jiffies. Signed-off-by: Takashi Iwai <tiwai@suse.de>
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