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Code Issues Releases Packages Activity
linux/drivers/usb/gadget
History
Jill Donahue e9fec6f42c USB: gadget: f_midi: f_midi_complete to call queue_work 
[ Upstream commit 4ab37fcb42 ]

When using USB MIDI, a lock is attempted to be acquired twice through a
re-entrant call to f_midi_transmit, causing a deadlock.

Fix it by using queue_work() to schedule the inner f_midi_transmit() via
a high priority work queue from the completion handler.

Link: https://lore.kernel.org/all/CAArt=LjxU0fUZOj06X+5tkeGT+6RbXzpWg1h4t4Fwa_KGVAX6g@mail.gmail.com/
Fixes: d5daf49b58 ("USB: gadget: midi: add midi function driver")
Cc: stable <stable@kernel.org>
Signed-off-by: Jill Donahue <jilliandonahue58@gmail.com>
Link: https://lore.kernel.org/r/20250211174805.1369265-1-jdonahue@fender.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
History 2025-02-27 04:30:16 -08:00
..
function USB: gadget: f_midi: f_midi_complete to call queue_work 2025-02-27 04:30:16 -08:00
legacy move asm/unaligned.h to linux/unaligned.h 2024-10-02 17:23:23 -04:00
udc usb: gadget: core: flush gadget workqueue after device removal 2025-02-21 14:01:32 +01:00
composite.c Revert "usb: gadget: composite: fix OS descriptors w_value logic" 2024-12-05 14:02:50 +01:00
config.c usb: gadget: config: remove max speed check in usb_assign_descriptors() 2023-08-22 14:48:33 +02:00
configfs.c usb: gadget: configfs: Ignore trailing LF for user strings to cdev 2025-01-17 13:40:55 +01:00
configfs.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
epautoconf.c usb: gadget: fix for a typo that conveys logically-inverted information. 2021-09-14 10:27:54 +02:00
functions.c USB: add SPDX identifiers to all remaining files in drivers/usb/ 2017-11-04 11:48:02 +01:00
Kconfig usb: gadget: midi2: Reverse-select at the right place 2025-01-17 13:40:54 +01:00
Makefile usb: gadget: Makefile: remove ccflags-y 2022-03-18 12:56:08 +01:00
u_f.c usb: gadget: function: move u_f.h to include/linux/usb/func_utils.h 2024-09-03 09:57:08 +02:00
u_os_desc.h move asm/unaligned.h to linux/unaligned.h 2024-10-02 17:23:23 -04:00
usbstring.c usb: gadget: fix langid kernel-doc warning in usbstring.c 2020-07-09 10:13:07 +03:00