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linux-2.6/sound/core
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Clemens Ladisch 59ff878ffb ALSA: pcm: detect xruns in no-period-wakeup mode 
When period wakeups are disabled, successive calls to the pointer update
function do not have a maximum allowed distance, so xruns cannot be
detected with the pointer value only.

To detect xruns, compare the actually elapsed time with the time that
should have theoretically elapsed since the last update.  When the
hardware pointer has wrapped around due to an xrun, the actually elapsed
time will be too big by about hw_ptr_buffer_jiffies.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
 		2010-11-22 08:14:06 +01:00
..
oss Merge remote branch 'alsa/devel' into topic/misc 2010-10-11 13:56:12 +02:00
seq llseek: automatically add .llseek fop 2010-10-15 15:53:27 +02:00
Kconfig ALSA: sound/core/pcm_timer.c: use lib/gcd.c 2009-12-22 08:24:35 +01:00
Makefile ALSA: Fix SG-buffer DMA with non-coherent architectures 2009-07-08 14:20:20 +02:00
control.c ALSA: prevent heap corruption in snd_ctl_new() 2010-09-28 21:33:16 +02:00
control_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
device.c ALSA: Print function symbol in the error messages 2008-10-16 16:17:30 +02:00
hrtimer.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
hwdep.c ALSA: hwdep - Make open callback optional 2009-02-05 09:10:20 +01:00
hwdep_compat.c
…
info.c ALSA: info - Implement common llseek for binary mode 2010-04-13 12:01:20 +02:00
info_oss.c ALSA: Kill snd_assert() in sound/core/* 2008-08-13 11:46:35 +02:00
init.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6 2010-10-25 08:32:05 -07:00
isadma.c ALSA: snd_dma_pointer workaround for chipsets with buggy DMA 2009-10-11 18:03:13 +02:00
jack.c Merge branch 'topic/jack' into for-linus 2010-05-20 11:59:37 +02:00
memalloc.c ALSA: Fix SG-buffer DMA with non-coherent architectures 2009-07-08 14:20:20 +02:00
memory.c [ALSA] Remove sound/driver.h 2008-01-31 17:29:48 +01:00
misc.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
pcm.c Merge branch 'fix/misc' into topic/misc 2010-10-11 13:45:22 +02:00
pcm_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
pcm_lib.c ALSA: pcm: detect xruns in no-period-wakeup mode 2010-11-22 08:14:06 +01:00
pcm_memory.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
pcm_misc.c ALSA: pcm: Define G723 3-bit and 5-bit formats 2010-05-31 09:10:03 +02:00
pcm_native.c ALSA: pcm: support for period wakeup disabling 2010-11-22 08:13:16 +01:00
pcm_timer.c ALSA: sound/core/pcm_timer.c: use lib/gcd.c 2009-12-22 08:24:35 +01:00
rawmidi.c ALSA: rawmidi: fix oops (use after free) when unloading a driver module 2010-10-17 10:11:40 +02:00
rawmidi_compat.c
…
rtctimer.c ALSA: hda - Convert from takslet_hi_schedule() to tasklet_schedule() 2008-12-18 12:17:55 +01:00
sgbuf.c ALSA: Fix vunmap and free order in snd_free_sgbuf_pages() 2009-03-18 08:04:01 +01:00
sound.c llseek: automatically add .llseek fop 2010-10-15 15:53:27 +02:00
sound_oss.c ALSA: Remove warning message for invalid OSS minor ranges 2010-01-18 14:18:55 +01:00
timer.c Merge branch 'topic/core-cleanup' into for-linus 2010-05-20 11:58:57 +02:00
timer_compat.c ALSA: Kill snd_assert() in sound/core/* 2008-08-13 11:46:35 +02:00
vmaster.c ALSA: Add new TLV types for dBwith min/max 2009-06-17 10:56:53 +02:00