tree 936191d9dd7266444367a3029e121ed32665aa75
parent 4db8a5f21e5149e09949516eef98b78b68880075
author Mark Brown <broonie@opensource.wolfsonmicro.com> 1208438679 -0400
committer Dmitry Torokhov <dmitry.torokhov@gmail.com> 1208438679 -0400

Input: wm97xx-core - only schedule interrupt handler if not already scheduled

As well as clarifying the fact that the driver can cope if a second
interrupt occurs before the IRQ work is scheduled this also ensures
that calls to the machine irq_enable() are balanced, making that easier
to implement.  Normally this is redundant due to the interrupt disabling
but some unusal board configurations can trigger it.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>