linux-sg2042/net/bluetooth/hidp
Peter Hurley 7bb59df83b Bluetooth: Fix hidp disconnect deadlocks and lost wakeup
Partial revert of commit aabf6f89. When the hidp session thread
was converted from kernel_thread to kthread, the atomic/wakeups
were replaced with kthread_stop. kthread_stop has blocking semantics
which are inappropriate for the hidp session kthread. In addition,
the kthread signals itself to terminate in hidp_process_hid_control()
- it cannot do this with kthread_stop().

Lastly, a wakeup can be lost if the wakeup happens between checking
for the loop exit condition and setting the current state to
TASK_INTERRUPTIBLE. (Without appropriate synchronization mechanisms,
the task state should not be changed between the condition test and
the yield - via schedule() - as this creates a race between the
wakeup and resetting the state back to interruptible.)

Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
2011-06-30 15:47:50 -03:00
..
Kconfig Bluetooth: fix hidp kconfig dependency warning 2010-11-09 00:55:27 -02:00
Makefile Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
core.c Bluetooth: Fix hidp disconnect deadlocks and lost wakeup 2011-06-30 15:47:50 -03:00
hidp.h Bluetooth: Fix hidp disconnect deadlocks and lost wakeup 2011-06-30 15:47:50 -03:00
sock.c Bluetooth: Fix checkpatch errors, code style issues and typos in hidp 2011-03-31 14:22:56 -03:00