Viresh Kumar 6f7f2ae5df greybus: gb_connections_lock: don't use spin_lock_irq() ... spin_[un]lock_irq() routines should be used carefully as they things can go wrong, if they are mixed with spin_lock_irqsave() or other variants. The main problem is that spin_[un]lock_irq() routines doesn't check if the IRQs are already disabled/enabled on the local CPU and so spin_unlock_irq() will forcefully enable interrupts for example. This may not work well, if some other code was relying on interrupts being disabled. Use spin_lock_irqsave() and spin_unlock_restore() instead. This patch doesn't claim that it fixes the JIRA completely, but the issue was harder to reproduce for some iterations after this, which was quite easy to reproduce earlier on. Tested on EVT 2.0 with lots of debug patches to kernel and greybus. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>		2016-06-23 15:30:45 -07:00
..
staging/greybus	greybus: gb_connections_lock: don't use spin_lock_irq()	2016-06-23 15:30:45 -07:00