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Takashi Iwai 10e44239f6 ALSA: usb-audio: Fix mutex deadlock at disconnection ... The recent change for USB-audio disconnection race fixes introduced a mutex deadlock again. There is a circular dependency between chip->shutdown_rwsem and pcm->open_mutex, depicted like below, when a device is opened during the disconnection operation: A. snd_usb_audio_disconnect() -> card.c::register_mutex -> chip->shutdown_rwsem (write) -> snd_card_disconnect() -> pcm.c::register_mutex -> pcm->open_mutex B. snd_pcm_open() -> pcm->open_mutex -> snd_usb_pcm_open() -> chip->shutdown_rwsem (read) Since the chip->shutdown_rwsem protection in the case A is required only for turning on the chip->shutdown flag and it doesn't have to be taken for the whole operation, we can reduce its window in snd_usb_audio_disconnect(). Reported-by: Jiri Slaby <jslaby@suse.cz> Cc: <stable@vger.kernel.org> Signed-off-by: Takashi Iwai <tiwai@suse.de>		12 years ago
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aoa	sound/aoa: Adapt to new i2c probing scheme	13 years ago
arm	ALSA: platform: Check CONFIG_PM_SLEEP instead of CONFIG_PM	13 years ago
atmel	ALSA: sound/atmel/ac97c.c: fix error return code	13 years ago
core	ALSA: Fix card refcount unbalance	12 years ago
drivers	ALSA: aloop - add locking to timer access	13 years ago
firewire	…
i2c	ALSA: Fix typo in drivers sound	12 years ago
isa	ALSA: sound/isa/opti9xx/miro.c: eliminate possible double free	12 years ago
mips	…
oss	ARM: SoC fixes	13 years ago
parisc	…
pci	ALSA: fm801: precedence bug in snd_fm801_tea575x_get_pins()	12 years ago
pcmcia	ALSA: pdaudiocf: Remove superfluous pm_message_t argument from suspend	13 years ago
ppc	ALSA: sound/ppc/snd_ps3.c: fix error return code	13 years ago
sh	ALSA: Add missing .owner=THIS_MODULE to platform_driver definitions	13 years ago
soc	Merge branches 'fix/arizona', 'fix/core', 'fix/cs42l52', 'fix/mxs', 'fix/samsung' and 'fix/wm8978' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into tmp	12 years ago
sparc	sound: Remove unnecessary semicolon	13 years ago
spi	…
synth	…
usb	ALSA: usb-audio: Fix mutex deadlock at disconnection	12 years ago
Kconfig	…
Makefile	…
ac97_bus.c	…
last.c	ALSA: Remove the last mention of SNDRV_MAIN_OBJECT_FILE	13 years ago
sound_core.c	…
sound_firmware.c	sound_firmware: don't pass crap to filp_close()	13 years ago