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Takashi Iwai 4cdc115fd3 ALSA: pcm - Fix drain behavior in non-blocking mode 
The current PCM core has the following problems regarding PCM draining
in non-blocking mode:

- the current f_flags isn't checked in snd_pcm_drain(), thus changing
  the mode dynamically via snd_pcm_nonblock() after open doesn't work.
- calling drain in non-blocking mode just return -EAGAIN error, but
  doesn't provide any way to sync with draining.

This patch fixes these issues.
- check file->f_flags in snd_pcm_drain() properly
- when O_NONBLOCK is set, PCM core sets the stream(s) to DRAIN state
  but quits ioctl immediately without waiting the whole drain; the
  caller can sync the drain manually via poll()

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2009-08-20 16:40:16 +02:00
..
aoa ALSA: sound/aoa: Add kmalloc NULL tests 2009-07-31 10:14:58 +02:00
arm ASoC: Fix NULL pointer dereference in __pxa2xx_pcm_hw_free 2009-07-09 10:36:19 +01:00
atmel ALSA: snd-atmel-abdac: increase periods_min to 6 instead of 4 2009-04-06 03:56:28 +02:00
core ALSA: pcm - Fix drain behavior in non-blocking mode 2009-08-20 16:40:16 +02:00
drivers time: move PIT_TICK_RATE to linux/timex.h 2009-06-16 19:47:27 -07:00
i2c V4L/DVB (10771): tea575x-tuner: convert it to V4L2 API 2009-03-30 12:43:02 -03:00
isa ALSA: sound/isa: convert nested spin_lock_irqsave to spin_lock 2009-07-19 14:02:29 +02:00
mips ALSA: sgio2audio.c: clean up checking 2009-06-07 09:08:43 +02:00
oss sound: mpu401.c: Buffer overflow 2009-07-29 14:41:24 +02:00
parisc Merge branch 'topic/section-fix' into for-linus 2009-06-10 07:26:46 +02:00
pci Merge branch 'fix/hda' into for-linus 2009-08-12 08:05:20 +02:00
pcmcia ALSA: Add missing SNDRV_PCM_INFO_BATCH flag to some drivers 2009-04-28 15:06:44 +02:00
ppc Merge branch 'topic/ps3' into for-linus 2009-06-12 20:03:16 +02:00
sh trivial: Fix misspelling of firmware 2009-03-30 15:21:59 +02:00
soc Merge branch 'fix/asoc' into for-linus 2009-08-12 08:05:19 +02:00
sparc ALSA: Add missing SNDRV_PCM_INFO_BATCH flag to some drivers 2009-04-28 15:06:44 +02:00
spi ALSA: Convert to snd_card_create() in other sound/* 2009-01-12 15:21:19 +01:00
synth ALSA: clean up the logic for building sequencer modules 2009-05-29 11:49:42 +02:00
usb Merge branch 'fix/usb-audio' into for-linus 2009-07-26 11:07:08 +02:00
ac97_bus.c
Kconfig ALSA: Add Atmel ALSA drivers directory 2009-02-05 15:08:53 +01:00
last.c
Makefile ALSA: Add Atmel ALSA drivers directory 2009-02-05 15:08:53 +01:00
sound_core.c sound: do not set DEVNAME for OSS devices 2009-07-03 23:36:13 +02:00
sound_firmware.c