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| author | Ali Ahmet Memiş <aliamemis@disroot.org> | 2026-10-11 21:06:17 +0300 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2026-10-12 16:51:22 +0200 |
| commit | 682d6bb5f783adea7fa2a5b05166bff01b338081 (patch) | |
| tree | b2bd6a6b889c2bb790303602735988faba3dbee6 /tools/lib/python | |
| parent | 16e585b72fdaf7f1d467fb82a85467f5acf21d2e (diff) | |
ALSA: control_led: Fix deadlock between sysfs writes and card disconnect
snd_ctl_led_disconnect() removes the ctl-led sysfs files while
holding card->controls_rwsem. device_unregister() waits for running
sysfs callbacks which can deadlock when a concurrent write causes
the attach or detach callback to wait for controls_rwsem.
Break kernfs active protection in the attach, detach and list
callbacks and hold a module reference instead.
Fixes: a135dfb5de15 ("ALSA: led control - add sysfs kcontrol LED marking layer")
Signed-off-by: Ali Ahmet Memiş <aliamemis@disroot.org>
Link: https://patch.msgid.link/20261011180627.1594051-1-aliamemis@disroot.org
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'tools/lib/python')
0 files changed, 0 insertions, 0 deletions