CVSROOT: /cvs
Module name: src
Changes by: m...@cvs.openbsd.org 2015/01/13 09:03:18
Modified files:
sys/dev/usb : usb.c
Log message:
Always allow abort tasks to be scheduled, even if the device is beeing
detached, in order to prevent a deadlock situation.
This situation can occur if the thread detaching a device is sleeping,
waiting for all submitted transfers to finish, and the device's pipes
have not yet been aborted. This can happen when a USB Ethernet device
is being detached while a userland program is doing an ioctl(2).
Abort tasks need to be able to run in such case since timed out transfers
rely on them to be properly completed.
ok deraadt@
