[0/5] ALSA: Fix USB disconnect behavior for non-standard drivers

Message ID	20241113111042.15058-1-tiwai@suse.de (mailing list archive)
Headers	show Received: from smtp-out1.suse.de (smtp-out1.suse.de [195.135.223.130]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 5323B1FEFDE for <linux-sound@vger.kernel.org>; Wed, 13 Nov 2024 11:10:53 +0000 (UTC) From: Takashi Iwai <tiwai@suse.de> To: linux-sound@vger.kernel.org Subject: [PATCH 0/5] ALSA: Fix USB disconnect behavior for non-standard drivers Date: Wed, 13 Nov 2024 12:10:34 +0100 Message-ID: <20241113111042.15058-1-tiwai@suse.de> Precedence: bulk MIME-Version: 1.0 Content-Transfer-Encoding: 8bit default: False [-2.80 / 50.00]; BAYES_HAM(-3.00)[99.99%]; MID_CONTAINS_FROM(1.00)[]; NEURAL_HAM_LONG(-1.00)[-1.000]; R_MISSING_CHARSET(0.50)[]; NEURAL_HAM_SHORT(-0.20)[-0.977]; MIME_GOOD(-0.10)[text/plain]; DKIM_SIGNED(0.00)[suse.de:s=susede2_rsa,suse.de:s=susede2_ed25519]; ARC_NA(0.00)[]; TO_MATCH_ENVRCPT_ALL(0.00)[]; RCPT_COUNT_ONE(0.00)[1]; FUZZY_BLOCKED(0.00)[rspamd.com]; RCVD_TLS_ALL(0.00)[]; RCVD_VIA_SMTP_AUTH(0.00)[]; FROM_HAS_DN(0.00)[]; MIME_TRACE(0.00)[0:+]; FROM_EQ_ENVFROM(0.00)[]; TO_DN_NONE(0.00)[]; RCVD_COUNT_TWO(0.00)[2]; DBL_BLOCKED_OPENRESOLVER(0.00)[suse.de:mid]
Series	ALSA: Fix USB disconnect behavior for non-standard drivers \| expand [0/5] ALSA: Fix USB disconnect behavior for non-standard drivers [1/5] ALSA: usx2y: Use snd_card_free_when_closed() at disconnection [2/5] ALSA: us122l: Use snd_card_free_when_closed() at disconnection [3/5] ALSA: us122l: Drop mmap_count field [4/5] ALSA: caiaq: Use snd_card_free_when_closed() at disconnection [5/5] ALSA: 6fire: Release resources at card release

Message ID

20241113111042.15058-1-tiwai@suse.de (mailing list archive)

Headers

From: Takashi Iwai <tiwai@suse.de>
To: linux-sound@vger.kernel.org
Subject: [PATCH 0/5] ALSA: Fix USB disconnect behavior for non-standard
 drivers
Date: Wed, 13 Nov 2024 12:10:34 +0100
Message-ID: <20241113111042.15058-1-tiwai@suse.de>
Precedence: bulk
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit

Series

ALSA: Fix USB disconnect behavior for non-standard drivers | expand

Message

Takashi Iwai Nov. 13, 2024, 11:10 a.m. UTC

This is a series of patches to fix problems of USB non-standard audio
drivers at disconnections.  A few of them call snd_card_free() at the
disconnect callback, and this blocks until all files get closed.  It
may eventually trigger a soft lockup, as spotted by syzkaller.
Those can be fixed by replacing with snd_card_free_when_closed()
version.

While looking through the code, I stumbled on other issues like 6fire
driver's release management, and the fix is included as well.


Takashi

===

Takashi Iwai (5):
  ALSA: usx2y: Use snd_card_free_when_closed() at disconnection
  ALSA: us122l: Use snd_card_free_when_closed() at disconnection
  ALSA: us122l: Drop mmap_count field
  ALSA: caiaq: Use snd_card_free_when_closed() at disconnection
  ALSA: 6fire: Release resources at card release

 sound/usb/6fire/chip.c     | 10 +++++-----
 sound/usb/caiaq/audio.c    | 10 ++++++++--
 sound/usb/caiaq/audio.h    |  1 +
 sound/usb/caiaq/device.c   | 19 +++++++++++++++----
 sound/usb/caiaq/input.c    | 12 +++++++++---
 sound/usb/caiaq/input.h    |  1 +
 sound/usb/usx2y/us122l.c   | 21 +--------------------
 sound/usb/usx2y/us122l.h   |  2 --
 sound/usb/usx2y/usbusx2y.c |  2 +-
 9 files changed, 41 insertions(+), 37 deletions(-)