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usb: chaoskey: fix locking for O_NONBLOCK
authorOliver Neukum <oneukum@suse.com>
Thu, 30 Oct 2025 09:39:06 +0000 (10:39 +0100)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Thu, 18 Dec 2025 12:55:04 +0000 (13:55 +0100)
commit1358e9fecb89cf603621f85cd9de198576214a5b
tree720fd7cc1dd5325f2ea90f308b624369afecde43tree
parentc2238d487a640ae3511e1b6f4640ab27ce10d7f6commit | diff
usb: chaoskey: fix locking for O_NONBLOCK

[ Upstream commit a2fa8a12e6bc9d89c0505b8dd7ae38ec173d25de ]

A failure to take a lock with O_NONBLOCK needs to result
in -EAGAIN. Change it.

Fixes: 66e3e591891da ("usb: Add driver for Altus Metrum ChaosKey device (v2)")
Signed-off-by: Oliver Neukum <oneukum@suse.com>
Link: https://patch.msgid.link/20251030093918.2248104-1-oneukum@suse.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
drivers/usb/misc/chaoskey.c diff | blob | blame | history
Mirror https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git