USB: serial: digi_acceleport: add port lock nesting annotation

Browse source

The driver takes the driver port lock of both the OOB port and the port
itself when setting the modem control signals, which confuses lockdep.

Mark the OOB port lock as belonging to a separate subclass to suppress
false positive lockdep deadlock warnings.

Reported-by: syzbot+2051460e19471eeb42c3@syzkaller.appspotmail.com
Link: https://lore.kernel.org/all/6a6cd832.1aa927e4.17d4bf.0007.GAE@google.com/
Signed-off-by: Johan Hovold <johan@kernel.org>

...

This commit is contained in:

Johan Hovold 2026-08-01 14:58:27 +02:00

parent f5098b6bae

commit 177b48f840

1 changed files with 7 additions and 2 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

9

drivers/usb/serial/digi_acceleport.c

View file