tree 2243934db57482a50d163c53db8cf7f5836dac22
parent 96e4be06cbfcb8c9c2da7c77bacce0e56b581c0b
author Eli Cohen <eli@dev.mellanox.co.il> 1414069047 +0300
committer David S. Miller <davem@davemloft.net> 1414377964 -0400

net/mlx4_core: Call synchronize_irq() before freeing EQ buffer

After moving the EQ ownership to software effectively destroying it, call
synchronize_irq() to ensure that any handler routines running on other CPU
cores finish execution. Only then free the EQ buffer.
The same thing is done when we destroy a CQ which is one of the sources
generating interrupts. In the case of CQ we want to avoid completion handlers
on a CQ that was destroyed. In the case we do the same to avoid receiving
asynchronous events after the EQ has been destroyed and its buffers freed.

Signed-off-by: Eli Cohen <eli@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>