Takashi Iwai 4507a8b9b3 ALSA: caiaq: Use snd_card_free_when_closed() at disconnection ... [ Upstream commit b04dcbb7f7 ] The USB disconnect callback is supposed to be short and not too-long waiting. OTOH, the current code uses snd_card_free() at disconnection, but this waits for the close of all used fds, hence it can take long. It eventually blocks the upper layer USB ioctls, which may trigger a soft lockup. An easy workaround is to replace snd_card_free() with snd_card_free_when_closed(). This variant returns immediately while the release of resources is done asynchronously by the card device release at the last close. This patch also splits the code to the disconnect and the free phases; the former is called immediately at the USB disconnect callback while the latter is called from the card destructor. Fixes: 523f1dce37 ("[ALSA] Add Native Instrument usb audio device support") Signed-off-by: Takashi Iwai <tiwai@suse.de> Link: https://patch.msgid.link/20241113111042.15058-5-tiwai@suse.de Signed-off-by: Sasha Levin <sashal@kernel.org>		2024-12-09 10:32:11 +01:00
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audio.c	ALSA: caiaq: Use snd_card_free_when_closed() at disconnection	2024-12-09 10:32:11 +01:00
audio.h	ALSA: caiaq: Use snd_card_free_when_closed() at disconnection	2024-12-09 10:32:11 +01:00
control.c	ALSA: caiaq: More constifications	2020-01-05 16:14:37 +01:00
control.h
device.c	ALSA: caiaq: Use snd_card_free_when_closed() at disconnection	2024-12-09 10:32:11 +01:00
device.h
input.c	ALSA: caiaq: Use snd_card_free_when_closed() at disconnection	2024-12-09 10:32:11 +01:00
input.h	ALSA: caiaq: Use snd_card_free_when_closed() at disconnection	2024-12-09 10:32:11 +01:00
Makefile	treewide: Add SPDX license identifier - Makefile/Kconfig	2019-05-21 10:50:46 +02:00
midi.c	ALSA: Convert strlcpy to strscpy when return value is unused	2021-01-08 09:30:05 +01:00
midi.h